dynamodb

package
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 Go to latest Published: Sep 16, 2016 License: Apache-2.0 Imports: 16 Imported by: 0

Documentation

Overview

Package dynamodb provides a client for Amazon DynamoDB.

Index

Examples

Constants

View Source 
const (
	// @enum AttributeAction
	AttributeActionAdd = "ADD"
	// @enum AttributeAction
	AttributeActionPut = "PUT"
	// @enum AttributeAction
	AttributeActionDelete = "DELETE"
)
View Source 
const (
	// @enum ComparisonOperator
	ComparisonOperatorEq = "EQ"
	// @enum ComparisonOperator
	ComparisonOperatorNe = "NE"
	// @enum ComparisonOperator
	ComparisonOperatorIn = "IN"
	// @enum ComparisonOperator
	ComparisonOperatorLe = "LE"
	// @enum ComparisonOperator
	ComparisonOperatorLt = "LT"
	// @enum ComparisonOperator
	ComparisonOperatorGe = "GE"
	// @enum ComparisonOperator
	ComparisonOperatorGt = "GT"
	// @enum ComparisonOperator
	ComparisonOperatorBetween = "BETWEEN"
	// @enum ComparisonOperator
	ComparisonOperatorNotNull = "NOT_NULL"
	// @enum ComparisonOperator
	ComparisonOperatorNull = "NULL"
	// @enum ComparisonOperator
	ComparisonOperatorContains = "CONTAINS"
	// @enum ComparisonOperator
	ComparisonOperatorNotContains = "NOT_CONTAINS"
	// @enum ComparisonOperator
	ComparisonOperatorBeginsWith = "BEGINS_WITH"
)
View Source 
const (
	// @enum ConditionalOperator
	ConditionalOperatorAnd = "AND"
	// @enum ConditionalOperator
	ConditionalOperatorOr = "OR"
)
View Source 
const (
	// @enum IndexStatus
	IndexStatusCreating = "CREATING"
	// @enum IndexStatus
	IndexStatusUpdating = "UPDATING"
	// @enum IndexStatus
	IndexStatusDeleting = "DELETING"
	// @enum IndexStatus
	IndexStatusActive = "ACTIVE"
)
View Source 
const (
	// @enum KeyType
	KeyTypeHash = "HASH"
	// @enum KeyType
	KeyTypeRange = "RANGE"
)
View Source 
const (
	// @enum ProjectionType
	ProjectionTypeAll = "ALL"
	// @enum ProjectionType
	ProjectionTypeKeysOnly = "KEYS_ONLY"
	// @enum ProjectionType
	ProjectionTypeInclude = "INCLUDE"
)
View Source 
const (
	// @enum ReturnConsumedCapacity
	ReturnConsumedCapacityIndexes = "INDEXES"
	// @enum ReturnConsumedCapacity
	ReturnConsumedCapacityTotal = "TOTAL"
	// @enum ReturnConsumedCapacity
	ReturnConsumedCapacityNone = "NONE"
)

Determines the level of detail about provisioned throughput consumption that is returned in the response: 

INDEXES - The response includes the aggregate ConsumedCapacity for the

operation, together with ConsumedCapacity for each table and secondary index that was accessed.

Note that some operations, such as GetItem and BatchGetItem, do not access any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity information for table(s). 

TOTAL - The response includes only the aggregate ConsumedCapacity for

the operation. 

NONE - No ConsumedCapacity details are included in the response.
View Source 
const (
	// @enum ReturnItemCollectionMetrics
	ReturnItemCollectionMetricsSize = "SIZE"
	// @enum ReturnItemCollectionMetrics
	ReturnItemCollectionMetricsNone = "NONE"
)
View Source 
const (
	// @enum ReturnValue
	ReturnValueNone = "NONE"
	// @enum ReturnValue
	ReturnValueAllOld = "ALL_OLD"
	// @enum ReturnValue
	ReturnValueUpdatedOld = "UPDATED_OLD"
	// @enum ReturnValue
	ReturnValueAllNew = "ALL_NEW"
	// @enum ReturnValue
	ReturnValueUpdatedNew = "UPDATED_NEW"
)
View Source 
const (
	// @enum ScalarAttributeType
	ScalarAttributeTypeS = "S"
	// @enum ScalarAttributeType
	ScalarAttributeTypeN = "N"
	// @enum ScalarAttributeType
	ScalarAttributeTypeB = "B"
)
View Source 
const (
	// @enum Select
	SelectAllAttributes = "ALL_ATTRIBUTES"
	// @enum Select
	SelectAllProjectedAttributes = "ALL_PROJECTED_ATTRIBUTES"
	// @enum Select
	SelectSpecificAttributes = "SPECIFIC_ATTRIBUTES"
	// @enum Select
	SelectCount = "COUNT"
)
View Source 
const (
	// @enum StreamViewType
	StreamViewTypeNewImage = "NEW_IMAGE"
	// @enum StreamViewType
	StreamViewTypeOldImage = "OLD_IMAGE"
	// @enum StreamViewType
	StreamViewTypeNewAndOldImages = "NEW_AND_OLD_IMAGES"
	// @enum StreamViewType
	StreamViewTypeKeysOnly = "KEYS_ONLY"
)
View Source 
const (
	// @enum TableStatus
	TableStatusCreating = "CREATING"
	// @enum TableStatus
	TableStatusUpdating = "UPDATING"
	// @enum TableStatus
	TableStatusDeleting = "DELETING"
	// @enum TableStatus
	TableStatusActive = "ACTIVE"
)
View Source 
const ServiceName = "dynamodb"

A ServiceName is the name of the service the client will make API calls to.

Variables

This section is empty.

Functions

This section is empty.

Types

type AttributeDefinition 

type AttributeDefinition struct {

	// A name for the attribute.
	AttributeName *string `min:"1" type:"string" required:"true"`

	// The data type for the attribute, where:
	//
	//   S - the attribute is of type String
	//
	//   N - the attribute is of type Number
	//
	//   B - the attribute is of type Binary
	AttributeType *string `type:"string" required:"true" enum:"ScalarAttributeType"`
	// contains filtered or unexported fields
}

Represents an attribute for describing the key schema for the table and indexes.

func (AttributeDefinition) GoString 

func (s AttributeDefinition) GoString() string

GoString returns the string representation

func (AttributeDefinition) String 

func (s AttributeDefinition) String() string

String returns the string representation

func (*AttributeDefinition) Validate 

func (s *AttributeDefinition) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type AttributeValue 

type AttributeValue struct {

	// A Binary data type.
	//
	// B is automatically base64 encoded/decoded by the SDK.
	B []byte `type:"blob"`

	// A Boolean data type.
	BOOL *bool `type:"boolean"`

	// A Binary Set data type.
	BS [][]byte `type:"list"`

	// A List of attribute values.
	L []*AttributeValue `type:"list"`

	// A Map of attribute values.
	M map[string]*AttributeValue `type:"map"`

	// A Number data type.
	N *string `type:"string"`

	// A Number Set data type.
	NS []*string `type:"list"`

	// A Null data type.
	NULL *bool `type:"boolean"`

	// A String data type.
	S *string `type:"string"`

	// A String Set data type.
	SS []*string `type:"list"`
	// contains filtered or unexported fields
}

Represents the data for an attribute. You can set one, and only one, of the elements.

Each attribute in an item is a name-value pair. An attribute can be single-valued or multi-valued set. For example, a book item can have title and authors attributes. Each book has one title but can have many authors. The multi-valued attribute is a set; duplicate values are not allowed.

func (AttributeValue) GoString 

func (s AttributeValue) GoString() string

GoString returns the string representation

func (AttributeValue) String 

func (s AttributeValue) String() string

String returns the string representation

type AttributeValueUpdate 

type AttributeValueUpdate struct {

	// Specifies how to perform the update. Valid values are PUT (default), DELETE,
	// and ADD. The behavior depends on whether the specified primary key already
	// exists in the table.
	//
	//  If an item with the specified Key is found in the table:
	//
	//    PUT - Adds the specified attribute to the item. If the attribute already
	// exists, it is replaced by the new value.
	//
	//    DELETE - If no value is specified, the attribute and its value are removed
	// from the item. The data type of the specified value must match the existing
	// value's data type.
	//
	// If a set of values is specified, then those values are subtracted from the
	// old set. For example, if the attribute value was the set [a,b,c] and the
	// DELETE action specified [a,c], then the final attribute value would be [b].
	// Specifying an empty set is an error.
	//
	//    ADD - If the attribute does not already exist, then the attribute and
	// its values are added to the item. If the attribute does exist, then the behavior
	// of ADD depends on the data type of the attribute:
	//
	//   If the existing attribute is a number, and if Value is also a number,
	// then the Value is mathematically added to the existing attribute. If Value
	// is a negative number, then it is subtracted from the existing attribute.
	//
	//   If you use ADD to increment or decrement a number value for an item that
	// doesn't exist before the update, DynamoDB uses 0 as the initial value.
	//
	// In addition, if you use ADD to update an existing item, and intend to increment
	// or decrement an attribute value which does not yet exist, DynamoDB uses 0
	// as the initial value. For example, suppose that the item you want to update
	// does not yet have an attribute named itemcount, but you decide to ADD the
	// number 3 to this attribute anyway, even though it currently does not exist.
	// DynamoDB will create the itemcount attribute, set its initial value to 0,
	// and finally add 3 to it. The result will be a new itemcount attribute in
	// the item, with a value of 3.
	//
	//    If the existing data type is a set, and if the Value is also a set, then
	// the Value is added to the existing set. (This is a set operation, not mathematical
	// addition.) For example, if the attribute value was the set [1,2], and the
	// ADD action specified [3], then the final attribute value would be [1,2,3].
	// An error occurs if an Add action is specified for a set attribute and the
	// attribute type specified does not match the existing set type.
	//
	// Both sets must have the same primitive data type. For example, if the existing
	// data type is a set of strings, the Value must also be a set of strings. The
	// same holds true for number sets and binary sets.
	//
	//   This action is only valid for an existing attribute whose data type is
	// number or is a set. Do not use ADD for any other data types.
	//
	//    If no item with the specified Key is found:
	//
	//    PUT - DynamoDB creates a new item with the specified primary key, and
	// then adds the attribute.
	//
	//    DELETE - Nothing happens; there is no attribute to delete.
	//
	//    ADD - DynamoDB creates an item with the supplied primary key and number
	// (or set of numbers) for the attribute value. The only data types allowed
	// are number and number set; no other data types can be specified.
	Action *string `type:"string" enum:"AttributeAction"`

	// Represents the data for an attribute. You can set one, and only one, of the
	// elements.
	//
	// Each attribute in an item is a name-value pair. An attribute can be single-valued
	// or multi-valued set. For example, a book item can have title and authors
	// attributes. Each book has one title but can have many authors. The multi-valued
	// attribute is a set; duplicate values are not allowed.
	Value *AttributeValue `type:"structure"`
	// contains filtered or unexported fields
}

For the UpdateItem operation, represents the attributes to be modified, the action to perform on each, and the new value for each. 

You cannot use UpdateItem to update any primary key attributes. Instead,

you will need to delete the item, and then use PutItem to create a new item with new attributes. 

Attribute values cannot be null; string and binary type attributes must

have lengths greater than zero; and set type attributes must not be empty. Requests with empty values will be rejected with a ValidationException exception.

func (AttributeValueUpdate) GoString 

func (s AttributeValueUpdate) GoString() string

GoString returns the string representation

func (AttributeValueUpdate) String 

func (s AttributeValueUpdate) String() string

String returns the string representation

type BatchGetItemInput 

type BatchGetItemInput struct {

	// A map of one or more table names and, for each table, a map that describes
	// one or more items to retrieve from that table. Each table name can be used
	// only once per BatchGetItem request.
	//
	// Each element in the map of items to retrieve consists of the following:
	//
	//    ConsistentRead - If true, a strongly consistent read is used; if false
	// (the default), an eventually consistent read is used.
	//
	//    ExpressionAttributeNames - One or more substitution tokens for attribute
	// names in the ProjectionExpression parameter. The following are some use cases
	// for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//    Keys - An array of primary key attribute values that define specific
	// items in the table. For each primary key, you must provide all of the key
	// attributes. For example, with a simple primary key, you only need to provide
	// the partition key value. For a composite key, you must provide both the partition
	// key value and the sort key value.
	//
	//    ProjectionExpression - A string that identifies one or more attributes
	// to retrieve from the table. These attributes can include scalars, sets, or
	// elements of a JSON document. The attributes in the expression must be separated
	// by commas.
	//
	// If no attribute names are specified, then all attributes will be returned.
	// If any of the requested attributes are not found, they will not appear in
	// the result.
	//
	// For more information, see Accessing Item Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//    AttributesToGet -
	//
	//  This is a legacy parameter, for backward compatibility. New applications
	// should use ProjectionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	// This parameter allows you to retrieve attributes of type List or Map; however,
	// it cannot retrieve individual elements within a List or a Map.
	//
	//  The names of one or more attributes to retrieve. If no attribute names
	// are provided, then all attributes will be returned. If any of the requested
	// attributes are not found, they will not appear in the result.
	//
	// Note that AttributesToGet has no effect on provisioned throughput consumption.
	// DynamoDB determines capacity units consumed based on item size, not on the
	// amount of data that is returned to an application.
	RequestItems map[string]*KeysAndAttributes `min:"1" type:"map" required:"true"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`
	// contains filtered or unexported fields
}

Represents the input of a BatchGetItem operation.

func (BatchGetItemInput) GoString 

func (s BatchGetItemInput) GoString() string

GoString returns the string representation

func (BatchGetItemInput) String 

func (s BatchGetItemInput) String() string

String returns the string representation

func (*BatchGetItemInput) Validate 

func (s *BatchGetItemInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type BatchGetItemOutput 

type BatchGetItemOutput struct {

	// The read capacity units consumed by the operation.
	//
	// Each element consists of:
	//
	//    TableName - The table that consumed the provisioned throughput.
	//
	//    CapacityUnits - The total number of capacity units consumed.
	ConsumedCapacity []*ConsumedCapacity `type:"list"`

	// A map of table name to a list of items. Each object in Responses consists
	// of a table name, along with a map of attribute data consisting of the data
	// type and attribute value.
	Responses map[string][]map[string]*AttributeValue `type:"map"`

	// A map of tables and their respective keys that were not processed with the
	// current response. The UnprocessedKeys value is in the same form as RequestItems,
	// so the value can be provided directly to a subsequent BatchGetItem operation.
	// For more information, see RequestItems in the Request Parameters section.
	//
	// Each element consists of:
	//
	//    Keys - An array of primary key attribute values that define specific
	// items in the table.
	//
	//    AttributesToGet - One or more attributes to be retrieved from the table
	// or index. By default, all attributes are returned. If a requested attribute
	// is not found, it does not appear in the result.
	//
	//    ConsistentRead - The consistency of a read operation. If set to true,
	// then a strongly consistent read is used; otherwise, an eventually consistent
	// read is used.
	//
	//   If there are no unprocessed keys remaining, the response contains an empty
	// UnprocessedKeys map.
	UnprocessedKeys map[string]*KeysAndAttributes `min:"1" type:"map"`
	// contains filtered or unexported fields
}

Represents the output of a BatchGetItem operation.

func (BatchGetItemOutput) GoString 

func (s BatchGetItemOutput) GoString() string

GoString returns the string representation

func (BatchGetItemOutput) String 

func (s BatchGetItemOutput) String() string

String returns the string representation

type BatchWriteItemInput 

type BatchWriteItemInput struct {

	// A map of one or more table names and, for each table, a list of operations
	// to be performed (DeleteRequest or PutRequest). Each element in the map consists
	// of the following:
	//
	//    DeleteRequest - Perform a DeleteItem operation on the specified item.
	// The item to be deleted is identified by a Key subelement:
	//
	//    Key - A map of primary key attribute values that uniquely identify the
	// ! item. Each entry in this map consists of an attribute name and an attribute
	// value. For each primary key, you must provide all of the key attributes.
	// For example, with a simple primary key, you only need to provide a value
	// for the partition key. For a composite primary key, you must provide values
	// for both the partition key and the sort key.
	//
	//      PutRequest - Perform a PutItem operation on the specified item. The
	// item to be put is identified by an Item subelement:
	//
	//    Item - A map of attributes and their values. Each entry in this map consists
	// of an attribute name and an attribute value. Attribute values must not be
	// null; string and binary type attributes must have lengths greater than zero;
	// and set type attributes must not be empty. Requests that contain empty values
	// will be rejected with a ValidationException exception.
	//
	// If you specify any attributes that are part of an index key, then the data
	// types for those attributes must match those of the schema in the table's
	// attribute definition.
	RequestItems map[string][]*WriteRequest `min:"1" type:"map" required:"true"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// Determines whether item collection metrics are returned. If set to SIZE,
	// the response includes statistics about item collections, if any, that were
	// modified during the operation are returned in the response. If set to NONE
	// (the default), no statistics are returned.
	ReturnItemCollectionMetrics *string `type:"string" enum:"ReturnItemCollectionMetrics"`
	// contains filtered or unexported fields
}

Represents the input of a BatchWriteItem operation.

func (BatchWriteItemInput) GoString 

func (s BatchWriteItemInput) GoString() string

GoString returns the string representation

func (BatchWriteItemInput) String 

func (s BatchWriteItemInput) String() string

String returns the string representation

func (*BatchWriteItemInput) Validate 

func (s *BatchWriteItemInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type BatchWriteItemOutput 

type BatchWriteItemOutput struct {

	// The capacity units consumed by the operation.
	//
	// Each element consists of:
	//
	//    TableName - The table that consumed the provisioned throughput.
	//
	//    CapacityUnits - The total number of capacity units consumed.
	ConsumedCapacity []*ConsumedCapacity `type:"list"`

	// A list of tables that were processed by BatchWriteItem and, for each table,
	// information about any item collections that were affected by individual DeleteItem
	// or PutItem operations.
	//
	// Each entry consists of the following subelements:
	//
	//    ItemCollectionKey - The partition key value of the item collection. This
	// is the same as the partition key value of the item.
	//
	//    SizeEstimateRange - An estimate of item collection size, expressed in
	// GB. This is a two-element array containing a lower bound and an upper bound
	// for the estimate. The estimate includes the size of all the items in the
	// table, plus the size of all attributes projected into all of the local secondary
	// indexes on the table. Use this estimate to measure whether a local secondary
	// index is approaching its size limit.
	//
	// The estimate is subject to change over time; therefore, do not rely on the
	// precision or accuracy of the estimate.
	ItemCollectionMetrics map[string][]*ItemCollectionMetrics `type:"map"`

	// A map of tables and requests against those tables that were not processed.
	// The UnprocessedItems value is in the same form as RequestItems, so you can
	// provide this value directly to a subsequent BatchGetItem operation. For more
	// information, see RequestItems in the Request Parameters section.
	//
	// Each UnprocessedItems entry consists of a table name and, for that table,
	// a list of operations to perform (DeleteRequest or PutRequest).
	//
	//    DeleteRequest - Perform a DeleteItem operation on the specified item.
	// The item to be deleted is identified by a Key subelement:
	//
	//    Key - A map of primary key attribute values that uniquely identify the
	// item. Each entry in this map consists of an attribute name and an attribute
	// value.
	//
	//      PutRequest - Perform a PutItem operation on the specified item. The
	// item to be put is identified by an Item subelement:
	//
	//    Item - A map of attributes and their values. Each entry in this map consists
	// of an attribute name and an attribute value. Attribute values must not be
	// null; string and binary type attributes must have lengths greater than zero;
	// and set type attributes must not be empty. Requests that contain empty values
	// will be rejected with a ValidationException exception.
	//
	// If you specify any attributes that are part of an index key, then the data
	// types for those attributes must match those of the schema in the table's
	// attribute definition.
	//
	//     If there are no unprocessed items remaining, the response contains an
	// empty UnprocessedItems map.
	UnprocessedItems map[string][]*WriteRequest `min:"1" type:"map"`
	// contains filtered or unexported fields
}

Represents the output of a BatchWriteItem operation.

func (BatchWriteItemOutput) GoString 

func (s BatchWriteItemOutput) GoString() string

GoString returns the string representation

func (BatchWriteItemOutput) String 

func (s BatchWriteItemOutput) String() string

String returns the string representation

type Capacity 

type Capacity struct {

	// The total number of capacity units consumed on a table or an index.
	CapacityUnits *float64 `type:"double"`
	// contains filtered or unexported fields
}

Represents the amount of provisioned throughput capacity consumed on a table or an index.

func (Capacity) GoString 

func (s Capacity) GoString() string

GoString returns the string representation

func (Capacity) String 

func (s Capacity) String() string

String returns the string representation

type Condition 

type Condition struct {

	// One or more values to evaluate against the supplied attribute. The number
	// of values in the list depends on the ComparisonOperator being used.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For Binary, DynamoDB treats each byte of the binary data as unsigned when
	// it compares binary values.
	AttributeValueList []*AttributeValue `type:"list"`

	// A comparator for evaluating attributes. For example, equals, greater than,
	// less than, etc.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// The following are descriptions of each comparison operator.
	//
	//    EQ : Equal. EQ is supported for all datatypes, including lists and maps.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, Binary, String Set, Number Set, or Binary Set. If an item
	// contains an AttributeValue element of a different type than the one provided
	// in the request, the value does not match. For example, {"S":"6"} does not
	// equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     NE : Not equal. NE is supported for all datatypes, including lists and
	// maps.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, Binary, String Set, Number Set, or Binary Set. If an item contains
	// an AttributeValue of a different type than the one provided in the request,
	// the value does not match. For example, {"S":"6"} does not equal {"N":"6"}.
	// Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     LE : Less than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     LT : Less than.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GE : Greater than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GT : Greater than.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     NOT_NULL : The attribute exists. NOT_NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the existence of an attribute, not its data type.
	// If the data type of attribute "a" is null, and you evaluate it using NOT_NULL,
	// the result is a Boolean true. This result is because the attribute "a" exists;
	// its data type is not relevant to the NOT_NULL comparison operator.
	//
	//     NULL : The attribute does not exist. NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the nonexistence of an attribute, not its data
	// type. If the data type of attribute "a" is null, and you evaluate it using
	// NULL, the result is a Boolean false. This is because the attribute "a" exists;
	// its data type is not relevant to the NULL comparison operator.
	//
	//     CONTAINS : Checks for a subsequence, or value in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is of type String, then the operator checks for a substring match.
	// If the target attribute of the comparison is of type Binary, then the operator
	// looks for a subsequence of the target that matches the input. If the target
	// attribute of the comparison is a set ("SS", "NS", or "BS"), then the operator
	// evaluates to true if it finds an exact match with any member of the set.
	//
	// CONTAINS is supported for lists: When evaluating "a CONTAINS b", "a" can
	// be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    NOT_CONTAINS : Checks for absence of a subsequence, or absence of a value
	// in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is a String, then the operator checks for the absence of a substring
	// match. If the target attribute of the comparison is Binary, then the operator
	// checks for the absence of a subsequence of the target that matches the input.
	// If the target attribute of the comparison is a set ("SS", "NS", or "BS"),
	// then the operator evaluates to true if it does not find an exact match with
	// any member of the set.
	//
	// NOT_CONTAINS is supported for lists: When evaluating "a NOT CONTAINS b",
	// "a" can be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    BEGINS_WITH : Checks for a prefix.
	//
	//  AttributeValueList can contain only one AttributeValue of type String or
	// Binary (not a Number or a set type). The target attribute of the comparison
	// must be of type String or Binary (not a Number or a set type).
	//
	//     IN : Checks for matching elements within two sets.
	//
	//  AttributeValueList can contain one or more AttributeValue elements of type
	// String, Number, or Binary (not a set type). These attributes are compared
	// against an existing set type attribute of an item. If any elements of the
	// input set are present in the item attribute, the expression evaluates to
	// true.
	//
	//    BETWEEN : Greater than or equal to the first value, and less than or
	// equal to the second value.
	//
	//  AttributeValueList must contain two AttributeValue elements of the same
	// type, either String, Number, or Binary (not a set type). A target attribute
	// matches if the target value is greater than, or equal to, the first element
	// and less than, or equal to, the second element. If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also,
	// {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
	//
	//   For usage examples of AttributeValueList and ComparisonOperator, see Legacy
	// Conditional Parameters (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.html)
	// in the Amazon DynamoDB Developer Guide.
	ComparisonOperator *string `type:"string" required:"true" enum:"ComparisonOperator"`
	// contains filtered or unexported fields
}

Represents the selection criteria for a Query or Scan operation: 

For a Query operation, Condition is used for specifying the KeyConditions

to use when querying a table or an index. For KeyConditions, only the following comparison operators are supported: 

EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN

Condition is also used in a QueryFilter, which evaluates the query results

and returns only the desired values. 

For a Scan operation, Condition is used in a ScanFilter, which evaluates

the scan results and returns only the desired values.

func (Condition) GoString 

func (s Condition) GoString() string

GoString returns the string representation

func (Condition) String 

func (s Condition) String() string

String returns the string representation

func (*Condition) Validate 

func (s *Condition) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ConsumedCapacity 

type ConsumedCapacity struct {

	// The total number of capacity units consumed by the operation.
	CapacityUnits *float64 `type:"double"`

	// The amount of throughput consumed on each global index affected by the operation.
	GlobalSecondaryIndexes map[string]*Capacity `type:"map"`

	// The amount of throughput consumed on each local index affected by the operation.
	LocalSecondaryIndexes map[string]*Capacity `type:"map"`

	// The amount of throughput consumed on the table affected by the operation.
	Table *Capacity `type:"structure"`

	// The name of the table that was affected by the operation.
	TableName *string `min:"3" type:"string"`
	// contains filtered or unexported fields
}

The capacity units consumed by an operation. The data returned includes the total provisioned throughput consumed, along with statistics for the table and any indexes involved in the operation. ConsumedCapacity is only returned if the request asked for it. For more information, see Provisioned Throughput (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html) in the Amazon DynamoDB Developer Guide.

func (ConsumedCapacity) GoString 

func (s ConsumedCapacity) GoString() string

GoString returns the string representation

func (ConsumedCapacity) String 

func (s ConsumedCapacity) String() string

String returns the string representation

type CreateGlobalSecondaryIndexAction 

type CreateGlobalSecondaryIndexAction struct {

	// The name of the global secondary index to be created.
	IndexName *string `min:"3" type:"string" required:"true"`

	// The key schema for the global secondary index.
	KeySchema []*KeySchemaElement `min:"1" type:"list" required:"true"`

	// Represents attributes that are copied (projected) from the table into an
	// index. These are in addition to the primary key attributes and index key
	// attributes, which are automatically projected.
	Projection *Projection `type:"structure" required:"true"`

	// Represents the provisioned throughput settings for a specified table or index.
	// The settings can be modified using the UpdateTable operation.
	//
	// For current minimum and maximum provisioned throughput values, see Limits
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html)
	// in the Amazon DynamoDB Developer Guide.
	ProvisionedThroughput *ProvisionedThroughput `type:"structure" required:"true"`
	// contains filtered or unexported fields
}

Represents a new global secondary index to be added to an existing table.

func (CreateGlobalSecondaryIndexAction) GoString 

func (s CreateGlobalSecondaryIndexAction) GoString() string

GoString returns the string representation

func (CreateGlobalSecondaryIndexAction) String 

func (s CreateGlobalSecondaryIndexAction) String() string

String returns the string representation

func (*CreateGlobalSecondaryIndexAction) Validate 

func (s *CreateGlobalSecondaryIndexAction) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type CreateTableInput 

type CreateTableInput struct {

	// An array of attributes that describe the key schema for the table and indexes.
	AttributeDefinitions []*AttributeDefinition `type:"list" required:"true"`

	// One or more global secondary indexes (the maximum is five) to be created
	// on the table. Each global secondary index in the array includes the following:
	//
	//    IndexName - The name of the global secondary index. Must be unique only
	// for this table.
	//
	//     KeySchema - Specifies the key schema for the global secondary index.
	//
	//    Projection - Specifies attributes that are copied (projected) from the
	// table into the index. These are in addition to the primary key attributes
	// and index key attributes, which are automatically projected. Each attribute
	// specification is composed of:
	//
	//    ProjectionType - One of the following:
	//
	//    KEYS_ONLY - Only the index and primary keys are projected into the index.
	//
	//    INCLUDE - Only the specified table attributes are projected into the
	// index. The list of projected attributes are in NonKeyAttributes.
	//
	//    ALL - All of the table attributes are projected into the index.
	//
	//      NonKeyAttributes - A list of one or more non-key attribute names that
	// are projected into the secondary index. The total count of attributes provided
	// in NonKeyAttributes, summed across all of the secondary indexes, must not
	// exceed 20. If you project the same attribute into two different indexes,
	// this counts as two distinct attributes when determining the total.
	//
	//      ProvisionedThroughput - The provisioned throughput settings for the
	// global secondary index, consisting of read and write capacity units.
	GlobalSecondaryIndexes []*GlobalSecondaryIndex `type:"list"`

	// Specifies the attributes that make up the primary key for a table or an index.
	// The attributes in KeySchema must also be defined in the AttributeDefinitions
	// array. For more information, see Data Model (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	// Each KeySchemaElement in the array is composed of:
	//
	//    AttributeName - The name of this key attribute.
	//
	//    KeyType - The role that the key attribute will assume:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//      The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	//
	//  For a simple primary key (partition key), you must provide exactly one
	// element with a KeyType of HASH.
	//
	// For a composite primary key (partition key and sort key), you must provide
	// exactly two elements, in this order: The first element must have a KeyType
	// of HASH, and the second element must have a KeyType of RANGE.
	//
	// For more information, see Specifying the Primary Key (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithTables.html#WorkingWithTables.primary.key)
	// in the Amazon DynamoDB Developer Guide.
	KeySchema []*KeySchemaElement `min:"1" type:"list" required:"true"`

	// One or more local secondary indexes (the maximum is five) to be created on
	// the table. Each index is scoped to a given partition key value. There is
	// a 10 GB size limit per partition key value; otherwise, the size of a local
	// secondary index is unconstrained.
	//
	// Each local secondary index in the array includes the following:
	//
	//    IndexName - The name of the local secondary index. Must be unique only
	// for this table.
	//
	//     KeySchema - Specifies the key schema for the local secondary index.
	// The key schema must begin with the same partition key as the table.
	//
	//    Projection - Specifies attributes that are copied (projected) from the
	// table into the index. These are in addition to the primary key attributes
	// and index key attributes, which are automatically projected. Each attribute
	// specification is composed of:
	//
	//    ProjectionType - One of the following:
	//
	//    KEYS_ONLY - Only the index and primary keys are projected into the index.
	//
	//    INCLUDE - Only the specified table attributes are projected into the
	// index. The list of projected attributes are in NonKeyAttributes.
	//
	//    ALL - All of the table attributes are projected into the index.
	//
	//      NonKeyAttributes - A list of one or more non-key attribute names that
	// are projected into the secondary index. The total count of attributes provided
	// in NonKeyAttributes, summed across all of the secondary indexes, must not
	// exceed 20. If you project the same attribute into two different indexes,
	// this counts as two distinct attributes when determining the total.
	LocalSecondaryIndexes []*LocalSecondaryIndex `type:"list"`

	// Represents the provisioned throughput settings for a specified table or index.
	// The settings can be modified using the UpdateTable operation.
	//
	// For current minimum and maximum provisioned throughput values, see Limits
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html)
	// in the Amazon DynamoDB Developer Guide.
	ProvisionedThroughput *ProvisionedThroughput `type:"structure" required:"true"`

	// The settings for DynamoDB Streams on the table. These settings consist of:
	//
	//    StreamEnabled - Indicates whether Streams is to be enabled (true) or
	// disabled (false).
	//
	//    StreamViewType - When an item in the table is modified, StreamViewType
	// determines what information is written to the table's stream. Valid values
	// for StreamViewType are:
	//
	//    KEYS_ONLY - Only the key attributes of the modified item are written
	// to the stream.
	//
	//    NEW_IMAGE - The entire item, as it appears after it was modified, is
	// written to the stream.
	//
	//    OLD_IMAGE - The entire item, as it appeared before it was modified, is
	// written to the stream.
	//
	//    NEW_AND_OLD_IMAGES - Both the new and the old item images of the item
	// are written to the stream.
	StreamSpecification *StreamSpecification `type:"structure"`

	// The name of the table to create.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a CreateTable operation.

func (CreateTableInput) GoString 

func (s CreateTableInput) GoString() string

GoString returns the string representation

func (CreateTableInput) String 

func (s CreateTableInput) String() string

String returns the string representation

func (*CreateTableInput) Validate 

func (s *CreateTableInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type CreateTableOutput 

type CreateTableOutput struct {

	// Represents the properties of a table.
	TableDescription *TableDescription `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of a CreateTable operation.

func (CreateTableOutput) GoString 

func (s CreateTableOutput) GoString() string

GoString returns the string representation

func (CreateTableOutput) String 

func (s CreateTableOutput) String() string

String returns the string representation

type DeleteGlobalSecondaryIndexAction 

type DeleteGlobalSecondaryIndexAction struct {

	// The name of the global secondary index to be deleted.
	IndexName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents a global secondary index to be deleted from an existing table.

func (DeleteGlobalSecondaryIndexAction) GoString 

func (s DeleteGlobalSecondaryIndexAction) GoString() string

GoString returns the string representation

func (DeleteGlobalSecondaryIndexAction) String 

func (s DeleteGlobalSecondaryIndexAction) String() string

String returns the string representation

func (*DeleteGlobalSecondaryIndexAction) Validate 

func (s *DeleteGlobalSecondaryIndexAction) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type DeleteItemInput 

type DeleteItemInput struct {

	// A condition that must be satisfied in order for a conditional DeleteItem
	// to succeed.
	//
	// An expression can contain any of the following:
	//
	//   Functions: attribute_exists | attribute_not_exists | attribute_type |
	// contains | begins_with | size
	//
	// These function names are case-sensitive.
	//
	//   Comparison operators:  = | <> | < | > | <= |
	// >= | BETWEEN | IN
	//
	//    Logical operators: AND | OR | NOT
	//
	//   For more information on condition expressions, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ConditionExpression replaces the legacy ConditionalOperator and Expected
	// parameters.
	ConditionExpression *string `type:"string"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ConditionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  A logical operator to apply to the conditions in the Expected map:
	//
	//    AND - If all of the conditions evaluate to true, then the entire map
	// evaluates to true.
	//
	//    OR - If at least one of the conditions evaluate to true, then the entire
	// map evaluates to true.
	//
	//   If you omit ConditionalOperator, then AND is the default.
	//
	// The operation will succeed only if the entire map evaluates to true.
	//
	//  This parameter does not support attributes of type List or Map.
	ConditionalOperator *string `type:"string" enum:"ConditionalOperator"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ConditionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  A map of attribute/condition pairs. Expected provides a conditional block
	// for the DeleteItem operation.
	//
	// Each element of Expected consists of an attribute name, a comparison operator,
	// and one or more values. DynamoDB compares the attribute with the value(s)
	// you supplied, using the comparison operator. For each Expected element, the
	// result of the evaluation is either true or false.
	//
	// If you specify more than one element in the Expected map, then by default
	// all of the conditions must evaluate to true. In other words, the conditions
	// are ANDed together. (You can use the ConditionalOperator parameter to OR
	// the conditions instead. If you do this, then at least one of the conditions
	// must evaluate to true, rather than all of them.)
	//
	// If the Expected map evaluates to true, then the conditional operation succeeds;
	// otherwise, it fails.
	//
	//  Expected contains the following:
	//
	//    AttributeValueList - One or more values to evaluate against the supplied
	// attribute. The number of values in the list depends on the ComparisonOperator
	// being used.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For type Binary, DynamoDB treats each byte of the binary data as unsigned
	// when it compares binary values.
	//
	//    ComparisonOperator - A comparator for evaluating attributes in the AttributeValueList.
	// When performing the comparison, DynamoDB uses strongly consistent reads.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// The following are descriptions of each comparison operator.
	//
	//    EQ : Equal. EQ is supported for all datatypes, including lists and maps.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, Binary, String Set, Number Set, or Binary Set. If an item
	// contains an AttributeValue element of a different type than the one provided
	// in the request, the value does not match. For example, {"S":"6"} does not
	// equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     NE : Not equal. NE is supported for all datatypes, including lists and
	// maps.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, Binary, String Set, Number Set, or Binary Set. If an item contains
	// an AttributeValue of a different type than the one provided in the request,
	// the value does not match. For example, {"S":"6"} does not equal {"N":"6"}.
	// Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     LE : Less than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     LT : Less than.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GE : Greater than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GT : Greater than.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     NOT_NULL : The attribute exists. NOT_NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the existence of an attribute, not its data type.
	// If the data type of attribute "a" is null, and you evaluate it using NOT_NULL,
	// the result is a Boolean true. This result is because the attribute "a" exists;
	// its data type is not relevant to the NOT_NULL comparison operator.
	//
	//     NULL : The attribute does not exist. NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the nonexistence of an attribute, not its data
	// type. If the data type of attribute "a" is null, and you evaluate it using
	// NULL, the result is a Boolean false. This is because the attribute "a" exists;
	// its data type is not relevant to the NULL comparison operator.
	//
	//     CONTAINS : Checks for a subsequence, or value in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is of type String, then the operator checks for a substring match.
	// If the target attribute of the comparison is of type Binary, then the operator
	// looks for a subsequence of the target that matches the input. If the target
	// attribute of the comparison is a set ("SS", "NS", or "BS"), then the operator
	// evaluates to true if it finds an exact match with any member of the set.
	//
	// CONTAINS is supported for lists: When evaluating "a CONTAINS b", "a" can
	// be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    NOT_CONTAINS : Checks for absence of a subsequence, or absence of a value
	// in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is a String, then the operator checks for the absence of a substring
	// match. If the target attribute of the comparison is Binary, then the operator
	// checks for the absence of a subsequence of the target that matches the input.
	// If the target attribute of the comparison is a set ("SS", "NS", or "BS"),
	// then the operator evaluates to true if it does not find an exact match with
	// any member of the set.
	//
	// NOT_CONTAINS is supported for lists: When evaluating "a NOT CONTAINS b",
	// "a" can be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    BEGINS_WITH : Checks for a prefix.
	//
	//  AttributeValueList can contain only one AttributeValue of type String or
	// Binary (not a Number or a set type). The target attribute of the comparison
	// must be of type String or Binary (not a Number or a set type).
	//
	//     IN : Checks for matching elements within two sets.
	//
	//  AttributeValueList can contain one or more AttributeValue elements of type
	// String, Number, or Binary (not a set type). These attributes are compared
	// against an existing set type attribute of an item. If any elements of the
	// input set are present in the item attribute, the expression evaluates to
	// true.
	//
	//    BETWEEN : Greater than or equal to the first value, and less than or
	// equal to the second value.
	//
	//  AttributeValueList must contain two AttributeValue elements of the same
	// type, either String, Number, or Binary (not a set type). A target attribute
	// matches if the target value is greater than, or equal to, the first element
	// and less than, or equal to, the second element. If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also,
	// {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
	//
	//     For usage examples of AttributeValueList and ComparisonOperator, see
	// Legacy Conditional Parameters (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	// For backward compatibility with previous DynamoDB releases, the following
	// parameters can be used instead of AttributeValueList and ComparisonOperator:
	//
	//    Value - A value for DynamoDB to compare with an attribute.
	//
	//    Exists - A Boolean value that causes DynamoDB to evaluate the value before
	// attempting the conditional operation:
	//
	//   If Exists is true, DynamoDB will check to see if that attribute value
	// already exists in the table. If it is found, then the condition evaluates
	// to true; otherwise the condition evaluate to false.
	//
	//   If Exists is false, DynamoDB assumes that the attribute value does not
	// exist in the table. If in fact the value does not exist, then the assumption
	// is valid and the condition evaluates to true. If the value is found, despite
	// the assumption that it does not exist, the condition evaluates to false.
	//
	//   Note that the default value for Exists is true.
	//
	//   The Value and Exists parameters are incompatible with AttributeValueList
	// and ComparisonOperator. Note that if you use both sets of parameters at once,
	// DynamoDB will return a ValidationException exception.
	//
	//  This parameter does not support attributes of type List or Map.
	Expected map[string]*ExpectedAttributeValue `type:"map"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// One or more values that can be substituted in an expression.
	//
	// Use the : (colon) character in an expression to dereference an attribute
	// value. For example, suppose that you wanted to check whether the value of
	// the ProductStatus attribute was one of the following:
	//
	//  Available | Backordered | Discontinued
	//
	// You would first need to specify ExpressionAttributeValues as follows:
	//
	//  { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"}
	// }
	//
	// You could then use these values in an expression, such as this:
	//
	//  ProductStatus IN (:avail, :back, :disc)
	//
	// For more information on expression attribute values, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeValues map[string]*AttributeValue `type:"map"`

	// A map of attribute names to AttributeValue objects, representing the primary
	// key of the item to delete.
	//
	// For the primary key, you must provide all of the attributes. For example,
	// with a simple primary key, you only need to provide a value for the partition
	// key. For a composite primary key, you must provide values for both the partition
	// key and the sort key.
	Key map[string]*AttributeValue `type:"map" required:"true"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// Determines whether item collection metrics are returned. If set to SIZE,
	// the response includes statistics about item collections, if any, that were
	// modified during the operation are returned in the response. If set to NONE
	// (the default), no statistics are returned.
	ReturnItemCollectionMetrics *string `type:"string" enum:"ReturnItemCollectionMetrics"`

	// Use ReturnValues if you want to get the item attributes as they appeared
	// before they were deleted. For DeleteItem, the valid values are:
	//
	//    NONE - If ReturnValues is not specified, or if its value is NONE, then
	// nothing is returned. (This setting is the default for ReturnValues.)
	//
	//    ALL_OLD - The content of the old item is returned.
	//
	//    The ReturnValues parameter is used by several DynamoDB operations; however,
	// DeleteItem does not recognize any values other than NONE or ALL_OLD.
	ReturnValues *string `type:"string" enum:"ReturnValue"`

	// The name of the table from which to delete the item.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a DeleteItem operation.

func (DeleteItemInput) GoString 

func (s DeleteItemInput) GoString() string

GoString returns the string representation

func (DeleteItemInput) String 

func (s DeleteItemInput) String() string

String returns the string representation

func (*DeleteItemInput) Validate 

func (s *DeleteItemInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type DeleteItemOutput 

type DeleteItemOutput struct {

	// A map of attribute names to AttributeValue objects, representing the item
	// as it appeared before the DeleteItem operation. This map appears in the response
	// only if ReturnValues was specified as ALL_OLD in the request.
	Attributes map[string]*AttributeValue `type:"map"`

	// The capacity units consumed by an operation. The data returned includes the
	// total provisioned throughput consumed, along with statistics for the table
	// and any indexes involved in the operation. ConsumedCapacity is only returned
	// if the request asked for it. For more information, see Provisioned Throughput
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html)
	// in the Amazon DynamoDB Developer Guide.
	ConsumedCapacity *ConsumedCapacity `type:"structure"`

	// Information about item collections, if any, that were affected by the operation.
	// ItemCollectionMetrics is only returned if the request asked for it. If the
	// table does not have any local secondary indexes, this information is not
	// returned in the response.
	//
	// Each ItemCollectionMetrics element consists of:
	//
	//    ItemCollectionKey - The partition key value of the item collection. This
	// is the same as the partition key value of the item itself.
	//
	//    SizeEstimateRange - An estimate of item collection size, in gigabytes.
	// This value is a two-element array containing a lower bound and an upper bound
	// for the estimate. The estimate includes the size of all the items in the
	// table, plus the size of all attributes projected into all of the local secondary
	// indexes on that table. Use this estimate to measure whether a local secondary
	// index is approaching its size limit.
	//
	// The estimate is subject to change over time; therefore, do not rely on the
	// precision or accuracy of the estimate.
	ItemCollectionMetrics *ItemCollectionMetrics `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of a DeleteItem operation.

func (DeleteItemOutput) GoString 

func (s DeleteItemOutput) GoString() string

GoString returns the string representation

func (DeleteItemOutput) String 

func (s DeleteItemOutput) String() string

String returns the string representation

type DeleteRequest 

type DeleteRequest struct {

	// A map of attribute name to attribute values, representing the primary key
	// of the item to delete. All of the table's primary key attributes must be
	// specified, and their data types must match those of the table's key schema.
	Key map[string]*AttributeValue `type:"map" required:"true"`
	// contains filtered or unexported fields
}

Represents a request to perform a DeleteItem operation on an item.

func (DeleteRequest) GoString 

func (s DeleteRequest) GoString() string

GoString returns the string representation

func (DeleteRequest) String 

func (s DeleteRequest) String() string

String returns the string representation

type DeleteTableInput 

type DeleteTableInput struct {

	// The name of the table to delete.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a DeleteTable operation.

func (DeleteTableInput) GoString 

func (s DeleteTableInput) GoString() string

GoString returns the string representation

func (DeleteTableInput) String 

func (s DeleteTableInput) String() string

String returns the string representation

func (*DeleteTableInput) Validate 

func (s *DeleteTableInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type DeleteTableOutput 

type DeleteTableOutput struct {

	// Represents the properties of a table.
	TableDescription *TableDescription `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of a DeleteTable operation.

func (DeleteTableOutput) GoString 

func (s DeleteTableOutput) GoString() string

GoString returns the string representation

func (DeleteTableOutput) String 

func (s DeleteTableOutput) String() string

String returns the string representation

type DescribeLimitsInput 

type DescribeLimitsInput struct {
	// contains filtered or unexported fields
}

Represents the input of a DescribeLimits operation. Has no content.

func (DescribeLimitsInput) GoString 

func (s DescribeLimitsInput) GoString() string

GoString returns the string representation

func (DescribeLimitsInput) String 

func (s DescribeLimitsInput) String() string

String returns the string representation

type DescribeLimitsOutput 

type DescribeLimitsOutput struct {

	// The maximum total read capacity units that your account allows you to provision
	// across all of your tables in this region.
	AccountMaxReadCapacityUnits *int64 `min:"1" type:"long"`

	// The maximum total write capacity units that your account allows you to provision
	// across all of your tables in this region.
	AccountMaxWriteCapacityUnits *int64 `min:"1" type:"long"`

	// The maximum read capacity units that your account allows you to provision
	// for a new table that you are creating in this region, including the read
	// capacity units provisioned for its global secondary indexes (GSIs).
	TableMaxReadCapacityUnits *int64 `min:"1" type:"long"`

	// The maximum write capacity units that your account allows you to provision
	// for a new table that you are creating in this region, including the write
	// capacity units provisioned for its global secondary indexes (GSIs).
	TableMaxWriteCapacityUnits *int64 `min:"1" type:"long"`
	// contains filtered or unexported fields
}

Represents the output of a DescribeLimits operation.

func (DescribeLimitsOutput) GoString 

func (s DescribeLimitsOutput) GoString() string

GoString returns the string representation

func (DescribeLimitsOutput) String 

func (s DescribeLimitsOutput) String() string

String returns the string representation

type DescribeTableInput 

type DescribeTableInput struct {

	// The name of the table to describe.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a DescribeTable operation.

func (DescribeTableInput) GoString 

func (s DescribeTableInput) GoString() string

GoString returns the string representation

func (DescribeTableInput) String 

func (s DescribeTableInput) String() string

String returns the string representation

func (*DescribeTableInput) Validate 

func (s *DescribeTableInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type DescribeTableOutput 

type DescribeTableOutput struct {

	// Represents the properties of a table.
	Table *TableDescription `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of a DescribeTable operation.

func (DescribeTableOutput) GoString 

func (s DescribeTableOutput) GoString() string

GoString returns the string representation

func (DescribeTableOutput) String 

func (s DescribeTableOutput) String() string

String returns the string representation

type DynamoDB 

type DynamoDB struct {
	*client.Client
}

This is the Amazon DynamoDB API Reference. This guide provides descriptions of the low-level DynamoDB API.

This guide is intended for use with the following DynamoDB documentation: 

Amazon DynamoDB Getting Started Guide (http://docs.aws.amazon.com/amazondynamodb/latest/gettingstartedguide/)

- provides hands-on exercises that help you learn the basics of working with DynamoDB. If you are new to DynamoDB, we recommend that you begin with the Getting Started Guide. 

Amazon DynamoDB Developer Guide (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/)

- contains detailed information about DynamoDB concepts, usage, and best practices. 

Amazon DynamoDB Streams API Reference (http://docs.aws.amazon.com/dynamodbstreams/latest/APIReference/)

- provides descriptions and samples of the DynamoDB Streams API. (For more information, see Capturing Table Activity with DynamoDB Streams (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html) in the Amazon DynamoDB Developer Guide.) 

Instead of making the requests to the low-level DynamoDB API directly

from your application, we recommend that you use the AWS Software Development Kits (SDKs). The easy-to-use libraries in the AWS SDKs make it unnecessary to call the low-level DynamoDB API directly from your application. The libraries take care of request authentication, serialization, and connection management. For more information, see Using the AWS SDKs with DynamoDB (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/UsingAWSSDK.html) in the Amazon DynamoDB Developer Guide.

If you decide to code against the low-level DynamoDB API directly, you will need to write the necessary code to authenticate your requests. For more information on signing your requests, see Using the DynamoDB API (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/API.html) in the Amazon DynamoDB Developer Guide.

The following are short descriptions of each low-level API action, organized by function. 

Managing Tables

  CreateTable - Creates a table with user-specified provisioned throughput

settings. You must define a primary key for the table - either a simple primary key (partition key), or a composite primary key (partition key and sort key). Optionally, you can create one or more secondary indexes, which provide fast data access using non-key attributes. 

DescribeTable - Returns metadata for a table, such as table size, status,

and index information. 

UpdateTable - Modifies the provisioned throughput settings for a table.

Optionally, you can modify the provisioned throughput settings for global secondary indexes on the table. 

ListTables - Returns a list of all tables associated with the current

AWS account and endpoint. 

 DeleteTable - Deletes a table and all of its indexes.

For conceptual information about managing tables, see Working with Tables

(http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithTables.html) in the Amazon DynamoDB Developer Guide. 

Reading Data

  GetItem - Returns a set of attributes for the item that has a given primary

key. By default, GetItem performs an eventually consistent read; however, applications can request a strongly consistent read instead. 

BatchGetItem - Performs multiple GetItem requests for data items using

their primary keys, from one table or multiple tables. The response from BatchGetItem has a size limit of 16 MB and returns a maximum of 100 items. Both eventually consistent and strongly consistent reads can be used. 

Query - Returns one or more items from a table or a secondary index.

You must provide a specific value for the partition key. You can narrow the scope of the query using comparison operators against a sort key value, or on the index key. Query supports either eventual or strong consistency. A single response has a size limit of 1 MB. 

Scan - Reads every item in a table; the result set is eventually consistent.

You can limit the number of items returned by filtering the data attributes, using conditional expressions. Scan can be used to enable ad-hoc querying of a table against non-key attributes; however, since this is a full table scan without using an index, Scan should not be used for any application query use case that requires predictable performance. 

For conceptual information about reading data, see Working with Items

(http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html) and Query and Scan Operations (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html) in the Amazon DynamoDB Developer Guide. 

Modifying Data

  PutItem - Creates a new item, or replaces an existing item with a new

item (including all the attributes). By default, if an item in the table already exists with the same primary key, the new item completely replaces the existing item. You can use conditional operators to replace an item only if its attribute values match certain conditions, or to insert a new item only if that item doesn't already exist. 

UpdateItem - Modifies the attributes of an existing item. You can also

use conditional operators to perform an update only if the item's attribute values match certain conditions. 

DeleteItem - Deletes an item in a table by primary key. You can use conditional

operators to perform a delete an item only if the item's attribute values match certain conditions. 

BatchWriteItem - Performs multiple PutItem and DeleteItem requests across

multiple tables in a single request. A failure of any request(s) in the batch will not cause the entire BatchWriteItem operation to fail. Supports batches of up to 25 items to put or delete, with a maximum total request size of 16 MB. 

For conceptual information about modifying data, see Working with Items

(http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html) and Query and Scan Operations (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html) in the Amazon DynamoDB Developer Guide. The service client's operations are safe to be used concurrently. It is not safe to mutate any of the client's properties though.

func New 

func New(p client.ConfigProvider, cfgs ...*aws.Config) *DynamoDB

New creates a new instance of the DynamoDB client with a session. If additional configuration is needed for the client instance use the optional aws.Config parameter to add your extra config.

Example: 

// Create a DynamoDB client from just a session.
svc := dynamodb.New(mySession)

// Create a DynamoDB client with additional configuration
svc := dynamodb.New(mySession, aws.NewConfig().WithRegion("us-west-2"))

func (*DynamoDB) BatchGetItem 

func (c *DynamoDB) BatchGetItem(input *BatchGetItemInput) (*BatchGetItemOutput, error)

The BatchGetItem operation returns the attributes of one or more items from one or more tables. You identify requested items by primary key.

A single operation can retrieve up to 16 MB of data, which can contain as many as 100 items. BatchGetItem will return a partial result if the response size limit is exceeded, the table's provisioned throughput is exceeded, or an internal processing failure occurs. If a partial result is returned, the operation returns a value for UnprocessedKeys. You can use this value to retry the operation starting with the next item to get. 

If you request more than 100 items BatchGetItem will return a ValidationException

with the message "Too many items requested for the BatchGetItem call". 

For example, if you ask to retrieve 100 items, but each individual item

is 300 KB in size, the system returns 52 items (so as not to exceed the 16 MB limit). It also returns an appropriate UnprocessedKeys value so you can get the next page of results. If desired, your application can include its own logic to assemble the pages of results into one data set.

If none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchGetItem will return a ProvisionedThroughputExceededException. If at least one of the items is successfully processed, then BatchGetItem completes successfully, while returning the keys of the unread items in UnprocessedKeys. 

If DynamoDB returns any unprocessed items, you should retry the batch operation

on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.

For more information, see Batch Operations and Error Handling (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#BatchOperations) in the Amazon DynamoDB Developer Guide. 

By default, BatchGetItem performs eventually consistent reads on every

table in the request. If you want strongly consistent reads instead, you can set ConsistentRead to true for any or all tables.

In order to minimize response latency, BatchGetItem retrieves items in parallel.

When designing your application, keep in mind that DynamoDB does not return items in any particular order. To help parse the response by item, include the primary key values for the items in your request in the AttributesToGet parameter.

If a requested item does not exist, it is not returned in the result. Requests for nonexistent items consume the minimum read capacity units according to the type of read. For more information, see Capacity Units Calculations (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithTables.html#CapacityUnitCalculations) in the Amazon DynamoDB Developer Guide.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.BatchGetItemInput{
		RequestItems: map[string]*dynamodb.KeysAndAttributes{ // Required
			"Key": { // Required
				Keys: []map[string]*dynamodb.AttributeValue{ // Required
					{ // Required
						"Key": { // Required
							B:    []byte("PAYLOAD"),
							BOOL: aws.Bool(true),
							BS: [][]byte{
								[]byte("PAYLOAD"), // Required
								// More values...
							},
							L: []*dynamodb.AttributeValue{
								{ // Required
									// Recursive values...
								},
								// More values...
							},
							M: map[string]*dynamodb.AttributeValue{
								"Key": { // Required
									// Recursive values...
								},
								// More values...
							},
							N: aws.String("NumberAttributeValue"),
							NS: []*string{
								aws.String("NumberAttributeValue"), // Required
								// More values...
							},
							NULL: aws.Bool(true),
							S:    aws.String("StringAttributeValue"),
							SS: []*string{
								aws.String("StringAttributeValue"), // Required
								// More values...
							},
						},
						// More values...
					},
					// More values...
				},
				AttributesToGet: []*string{
					aws.String("AttributeName"), // Required
					// More values...
				},
				ConsistentRead: aws.Bool(true),
				ExpressionAttributeNames: map[string]*string{
					"Key": aws.String("AttributeName"), // Required
					// More values...
				},
				ProjectionExpression: aws.String("ProjectionExpression"),
			},
			// More values...
		},
		ReturnConsumedCapacity: aws.String("ReturnConsumedCapacity"),
	}
	resp, err := svc.BatchGetItem(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) BatchGetItemPages 

func (c *DynamoDB) BatchGetItemPages(input *BatchGetItemInput, fn func(p *BatchGetItemOutput, lastPage bool) (shouldContinue bool)) error

BatchGetItemPages iterates over the pages of a BatchGetItem operation, calling the "fn" function with the response data for each page. To stop iterating, return false from the fn function.

See BatchGetItem method for more information on how to use this operation.

Note: This operation can generate multiple requests to a service. 

// Example iterating over at most 3 pages of a BatchGetItem operation.
pageNum := 0
err := client.BatchGetItemPages(params,
    func(page *BatchGetItemOutput, lastPage bool) bool {
        pageNum++
        fmt.Println(page)
        return pageNum <= 3
    })

func (*DynamoDB) BatchGetItemRequest 

func (c *DynamoDB) BatchGetItemRequest(input *BatchGetItemInput) (req *request.Request, output *BatchGetItemOutput)

BatchGetItemRequest generates a "aws/request.Request" representing the client's request for the BatchGetItem operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the BatchGetItem method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the BatchGetItemRequest method.
req, resp := client.BatchGetItemRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) BatchWriteItem 

func (c *DynamoDB) BatchWriteItem(input *BatchWriteItemInput) (*BatchWriteItemOutput, error)

The BatchWriteItem operation puts or deletes multiple items in one or more tables. A single call to BatchWriteItem can write up to 16 MB of data, which can comprise as many as 25 put or delete requests. Individual items to be written can be as large as 400 KB. 

BatchWriteItem cannot update items. To update items, use the UpdateItem

API. 

The individual PutItem and DeleteItem operations specified in BatchWriteItem

are atomic; however BatchWriteItem as a whole is not. If any requested operations fail because the table's provisioned throughput is exceeded or an internal processing failure occurs, the failed operations are returned in the UnprocessedItems response parameter. You can investigate and optionally resend the requests. Typically, you would call BatchWriteItem in a loop. Each iteration would check for unprocessed items and submit a new BatchWriteItem request with those unprocessed items until all items have been processed.

Note that if none of the items can be processed due to insufficient provisioned throughput on all of the tables in the request, then BatchWriteItem will return a ProvisionedThroughputExceededException. 

If DynamoDB returns any unprocessed items, you should retry the batch operation

on those items. However, we strongly recommend that you use an exponential backoff algorithm. If you retry the batch operation immediately, the underlying read or write requests can still fail due to throttling on the individual tables. If you delay the batch operation using exponential backoff, the individual requests in the batch are much more likely to succeed.

For more information, see Batch Operations and Error Handling (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#BatchOperations) in the Amazon DynamoDB Developer Guide. 

With BatchWriteItem, you can efficiently write or delete large amounts

of data, such as from Amazon Elastic MapReduce (EMR), or copy data from another database into DynamoDB. In order to improve performance with these large-scale operations, BatchWriteItem does not behave in the same way as individual PutItem and DeleteItem calls would. For example, you cannot specify conditions on individual put and delete requests, and BatchWriteItem does not return deleted items in the response.

If you use a programming language that supports concurrency, you can use threads to write items in parallel. Your application must include the necessary logic to manage the threads. With languages that don't support threading, you must update or delete the specified items one at a time. In both situations, BatchWriteItem provides an alternative where the API performs the specified put and delete operations in parallel, giving you the power of the thread pool approach without having to introduce complexity into your application.

Parallel processing reduces latency, but each specified put and delete request consumes the same number of write capacity units whether it is processed in parallel or not. Delete operations on nonexistent items consume one write capacity unit.

If one or more of the following is true, DynamoDB rejects the entire batch write operation: 

One or more tables specified in the BatchWriteItem request does not exist.

Primary key attributes specified on an item in the request do not match

those in the corresponding table's primary key schema. 

You try to perform multiple operations on the same item in the same BatchWriteItem

request. For example, you cannot put and delete the same item in the same BatchWriteItem request. 

There are more than 25 requests in the batch.

Any individual item in a batch exceeds 400 KB.

The total request size exceeds 16 MB.
Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.BatchWriteItemInput{
		RequestItems: map[string][]*dynamodb.WriteRequest{ // Required
			"Key": { // Required
				{ // Required
					DeleteRequest: &dynamodb.DeleteRequest{
						Key: map[string]*dynamodb.AttributeValue{ // Required
							"Key": { // Required
								B:    []byte("PAYLOAD"),
								BOOL: aws.Bool(true),
								BS: [][]byte{
									[]byte("PAYLOAD"), // Required
									// More values...
								},
								L: []*dynamodb.AttributeValue{
									{ // Required
										// Recursive values...
									},
									// More values...
								},
								M: map[string]*dynamodb.AttributeValue{
									"Key": { // Required
										// Recursive values...
									},
									// More values...
								},
								N: aws.String("NumberAttributeValue"),
								NS: []*string{
									aws.String("NumberAttributeValue"), // Required
									// More values...
								},
								NULL: aws.Bool(true),
								S:    aws.String("StringAttributeValue"),
								SS: []*string{
									aws.String("StringAttributeValue"), // Required
									// More values...
								},
							},
							// More values...
						},
					},
					PutRequest: &dynamodb.PutRequest{
						Item: map[string]*dynamodb.AttributeValue{ // Required
							"Key": { // Required
								B:    []byte("PAYLOAD"),
								BOOL: aws.Bool(true),
								BS: [][]byte{
									[]byte("PAYLOAD"), // Required
									// More values...
								},
								L: []*dynamodb.AttributeValue{
									{ // Required
										// Recursive values...
									},
									// More values...
								},
								M: map[string]*dynamodb.AttributeValue{
									"Key": { // Required
										// Recursive values...
									},
									// More values...
								},
								N: aws.String("NumberAttributeValue"),
								NS: []*string{
									aws.String("NumberAttributeValue"), // Required
									// More values...
								},
								NULL: aws.Bool(true),
								S:    aws.String("StringAttributeValue"),
								SS: []*string{
									aws.String("StringAttributeValue"), // Required
									// More values...
								},
							},
							// More values...
						},
					},
				},
				// More values...
			},
			// More values...
		},
		ReturnConsumedCapacity:      aws.String("ReturnConsumedCapacity"),
		ReturnItemCollectionMetrics: aws.String("ReturnItemCollectionMetrics"),
	}
	resp, err := svc.BatchWriteItem(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) BatchWriteItemRequest 

func (c *DynamoDB) BatchWriteItemRequest(input *BatchWriteItemInput) (req *request.Request, output *BatchWriteItemOutput)

BatchWriteItemRequest generates a "aws/request.Request" representing the client's request for the BatchWriteItem operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the BatchWriteItem method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the BatchWriteItemRequest method.
req, resp := client.BatchWriteItemRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) CreateTable 

func (c *DynamoDB) CreateTable(input *CreateTableInput) (*CreateTableOutput, error)

The CreateTable operation adds a new table to your account. In an AWS account, table names must be unique within each region. That is, you can have two tables with same name if you create the tables in different regions. 

CreateTable is an asynchronous operation. Upon receiving a CreateTable

request, DynamoDB immediately returns a response with a TableStatus of CREATING. After the table is created, DynamoDB sets the TableStatus to ACTIVE. You can perform read and write operations only on an ACTIVE table.

You can optionally define secondary indexes on the new table, as part of the CreateTable operation. If you want to create multiple tables with secondary indexes on them, you must create the tables sequentially. Only one table with secondary indexes can be in the CREATING state at any given time.

You can use the DescribeTable API to check the table status.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.CreateTableInput{
		AttributeDefinitions: []*dynamodb.AttributeDefinition{ // Required
			{ // Required
				AttributeName: aws.String("KeySchemaAttributeName"), // Required
				AttributeType: aws.String("ScalarAttributeType"),    // Required
			},
			// More values...
		},
		KeySchema: []*dynamodb.KeySchemaElement{ // Required
			{ // Required
				AttributeName: aws.String("KeySchemaAttributeName"), // Required
				KeyType:       aws.String("KeyType"),                // Required
			},
			// More values...
		},
		ProvisionedThroughput: &dynamodb.ProvisionedThroughput{ // Required
			ReadCapacityUnits:  aws.Int64(1), // Required
			WriteCapacityUnits: aws.Int64(1), // Required
		},
		TableName: aws.String("TableName"), // Required
		GlobalSecondaryIndexes: []*dynamodb.GlobalSecondaryIndex{
			{ // Required
				IndexName: aws.String("IndexName"), // Required
				KeySchema: []*dynamodb.KeySchemaElement{ // Required
					{ // Required
						AttributeName: aws.String("KeySchemaAttributeName"), // Required
						KeyType:       aws.String("KeyType"),                // Required
					},
					// More values...
				},
				Projection: &dynamodb.Projection{ // Required
					NonKeyAttributes: []*string{
						aws.String("NonKeyAttributeName"), // Required
						// More values...
					},
					ProjectionType: aws.String("ProjectionType"),
				},
				ProvisionedThroughput: &dynamodb.ProvisionedThroughput{ // Required
					ReadCapacityUnits:  aws.Int64(1), // Required
					WriteCapacityUnits: aws.Int64(1), // Required
				},
			},
			// More values...
		},
		LocalSecondaryIndexes: []*dynamodb.LocalSecondaryIndex{
			{ // Required
				IndexName: aws.String("IndexName"), // Required
				KeySchema: []*dynamodb.KeySchemaElement{ // Required
					{ // Required
						AttributeName: aws.String("KeySchemaAttributeName"), // Required
						KeyType:       aws.String("KeyType"),                // Required
					},
					// More values...
				},
				Projection: &dynamodb.Projection{ // Required
					NonKeyAttributes: []*string{
						aws.String("NonKeyAttributeName"), // Required
						// More values...
					},
					ProjectionType: aws.String("ProjectionType"),
				},
			},
			// More values...
		},
		StreamSpecification: &dynamodb.StreamSpecification{
			StreamEnabled:  aws.Bool(true),
			StreamViewType: aws.String("StreamViewType"),
		},
	}
	resp, err := svc.CreateTable(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) CreateTableRequest 

func (c *DynamoDB) CreateTableRequest(input *CreateTableInput) (req *request.Request, output *CreateTableOutput)

CreateTableRequest generates a "aws/request.Request" representing the client's request for the CreateTable operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the CreateTable method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the CreateTableRequest method.
req, resp := client.CreateTableRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) DeleteItem 

func (c *DynamoDB) DeleteItem(input *DeleteItemInput) (*DeleteItemOutput, error)

Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists, or if it has an expected attribute value.

In addition to deleting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.

Unless you specify conditions, the DeleteItem is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.

Conditional deletes are useful for deleting items only if specific conditions are met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item is not deleted.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.DeleteItemInput{
		Key: map[string]*dynamodb.AttributeValue{ // Required
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		TableName:           aws.String("TableName"), // Required
		ConditionExpression: aws.String("ConditionExpression"),
		ConditionalOperator: aws.String("ConditionalOperator"),
		Expected: map[string]*dynamodb.ExpectedAttributeValue{
			"Key": { // Required
				AttributeValueList: []*dynamodb.AttributeValue{
					{ // Required
						B:    []byte("PAYLOAD"),
						BOOL: aws.Bool(true),
						BS: [][]byte{
							[]byte("PAYLOAD"), // Required
							// More values...
						},
						L: []*dynamodb.AttributeValue{
							{ // Required
								// Recursive values...
							},
							// More values...
						},
						M: map[string]*dynamodb.AttributeValue{
							"Key": { // Required
								// Recursive values...
							},
							// More values...
						},
						N: aws.String("NumberAttributeValue"),
						NS: []*string{
							aws.String("NumberAttributeValue"), // Required
							// More values...
						},
						NULL: aws.Bool(true),
						S:    aws.String("StringAttributeValue"),
						SS: []*string{
							aws.String("StringAttributeValue"), // Required
							// More values...
						},
					},
					// More values...
				},
				ComparisonOperator: aws.String("ComparisonOperator"),
				Exists:             aws.Bool(true),
				Value: &dynamodb.AttributeValue{
					B:    []byte("PAYLOAD"),
					BOOL: aws.Bool(true),
					BS: [][]byte{
						[]byte("PAYLOAD"), // Required
						// More values...
					},
					L: []*dynamodb.AttributeValue{
						{ // Required
							// Recursive values...
						},
						// More values...
					},
					M: map[string]*dynamodb.AttributeValue{
						"Key": { // Required
							// Recursive values...
						},
						// More values...
					},
					N: aws.String("NumberAttributeValue"),
					NS: []*string{
						aws.String("NumberAttributeValue"), // Required
						// More values...
					},
					NULL: aws.Bool(true),
					S:    aws.String("StringAttributeValue"),
					SS: []*string{
						aws.String("StringAttributeValue"), // Required
						// More values...
					},
				},
			},
			// More values...
		},
		ExpressionAttributeNames: map[string]*string{
			"Key": aws.String("AttributeName"), // Required
			// More values...
		},
		ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		ReturnConsumedCapacity:      aws.String("ReturnConsumedCapacity"),
		ReturnItemCollectionMetrics: aws.String("ReturnItemCollectionMetrics"),
		ReturnValues:                aws.String("ReturnValue"),
	}
	resp, err := svc.DeleteItem(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) DeleteItemRequest 

func (c *DynamoDB) DeleteItemRequest(input *DeleteItemInput) (req *request.Request, output *DeleteItemOutput)

DeleteItemRequest generates a "aws/request.Request" representing the client's request for the DeleteItem operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the DeleteItem method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the DeleteItemRequest method.
req, resp := client.DeleteItemRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) DeleteTable 

func (c *DynamoDB) DeleteTable(input *DeleteTableInput) (*DeleteTableOutput, error)

The DeleteTable operation deletes a table and all of its items. After a DeleteTable request, the specified table is in the DELETING state until DynamoDB completes the deletion. If the table is in the ACTIVE state, you can delete it. If a table is in CREATING or UPDATING states, then DynamoDB returns a ResourceInUseException. If the specified table does not exist, DynamoDB returns a ResourceNotFoundException. If table is already in the DELETING state, no error is returned. 

DynamoDB might continue to accept data read and write operations, such

as GetItem and PutItem, on a table in the DELETING state until the table deletion is complete. 

When you delete a table, any indexes on that table are also deleted.

If you have DynamoDB Streams enabled on the table, then the corresponding stream on that table goes into the DISABLED state, and the stream is automatically deleted after 24 hours.

Use the DescribeTable API to check the status of the table.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.DeleteTableInput{
		TableName: aws.String("TableName"), // Required
	}
	resp, err := svc.DeleteTable(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) DeleteTableRequest 

func (c *DynamoDB) DeleteTableRequest(input *DeleteTableInput) (req *request.Request, output *DeleteTableOutput)

DeleteTableRequest generates a "aws/request.Request" representing the client's request for the DeleteTable operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the DeleteTable method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the DeleteTableRequest method.
req, resp := client.DeleteTableRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) DescribeLimits 

func (c *DynamoDB) DescribeLimits(input *DescribeLimitsInput) (*DescribeLimitsOutput, error)

Returns the current provisioned-capacity limits for your AWS account in a region, both for the region as a whole and for any one DynamoDB table that you create there.

When you establish an AWS account, the account has initial limits on the maximum read capacity units and write capacity units that you can provision across all of your DynamoDB tables in a given region. Also, there are per-table limits that apply when you create a table there. For more information, see Limits (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html) page in the Amazon DynamoDB Developer Guide.

Although you can increase these limits by filing a case at AWS Support Center (https://console.aws.amazon.com/support/home#/), obtaining the increase is not instantaneous. The DescribeLimits API lets you write code to compare the capacity you are currently using to those limits imposed by your account so that you have enough time to apply for an increase before you hit a limit.

For example, you could use one of the AWS SDKs to do the following: 

Call DescribeLimits for a particular region to obtain your current account

limits on provisioned capacity there. 

Create a variable to hold the aggregate read capacity units provisioned

for all your tables in that region, and one to hold the aggregate write capacity units. Zero them both. 

Call ListTables to obtain a list of all your DynamoDB tables.

 For each table name listed by ListTables, do the following:

Call DescribeTable with the table name.

Use the data returned by DescribeTable to add the read capacity units and

write capacity units provisioned for the table itself to your variables. 

If the table has one or more global secondary indexes (GSIs), loop over

these GSIs and add their provisioned capacity values to your variables as well. 

Report the account limits for that region returned by DescribeLimits,

along with the total current provisioned capacity levels you have calculated. 

This will let you see whether you are getting close to your account-level

limits.

The per-table limits apply only when you are creating a new table. They restrict the sum of the provisioned capacity of the new table itself and all its global secondary indexes.

For existing tables and their GSIs, DynamoDB will not let you increase provisioned capacity extremely rapidly, but the only upper limit that applies is that the aggregate provisioned capacity over all your tables and GSIs cannot exceed either of the per-account limits. 

DescribeLimits should only be called periodically. You can expect throttling

errors if you call it more than once in a minute. 

The DescribeLimits Request element has no content.
Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	var params *dynamodb.DescribeLimitsInput
	resp, err := svc.DescribeLimits(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) DescribeLimitsRequest 

func (c *DynamoDB) DescribeLimitsRequest(input *DescribeLimitsInput) (req *request.Request, output *DescribeLimitsOutput)

DescribeLimitsRequest generates a "aws/request.Request" representing the client's request for the DescribeLimits operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the DescribeLimits method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the DescribeLimitsRequest method.
req, resp := client.DescribeLimitsRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) DescribeTable 

func (c *DynamoDB) DescribeTable(input *DescribeTableInput) (*DescribeTableOutput, error)

Returns information about the table, including the current status of the table, when it was created, the primary key schema, and any indexes on the table. 

If you issue a DescribeTable request immediately after a CreateTable request,

DynamoDB might return a ResourceNotFoundException. This is because DescribeTable uses an eventually consistent query, and the metadata for your table might not be available at that moment. Wait for a few seconds, and then try the DescribeTable request again.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.DescribeTableInput{
		TableName: aws.String("TableName"), // Required
	}
	resp, err := svc.DescribeTable(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) DescribeTableRequest 

func (c *DynamoDB) DescribeTableRequest(input *DescribeTableInput) (req *request.Request, output *DescribeTableOutput)

DescribeTableRequest generates a "aws/request.Request" representing the client's request for the DescribeTable operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the DescribeTable method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the DescribeTableRequest method.
req, resp := client.DescribeTableRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) GetItem 

func (c *DynamoDB) GetItem(input *GetItemInput) (*GetItemOutput, error)

The GetItem operation returns a set of attributes for the item with the given primary key. If there is no matching item, GetItem does not return any data. 

GetItem provides an eventually consistent read by default. If your application

requires a strongly consistent read, set ConsistentRead to true. Although a strongly consistent read might take more time than an eventually consistent read, it always returns the last updated value.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.GetItemInput{
		Key: map[string]*dynamodb.AttributeValue{ // Required
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		TableName: aws.String("TableName"), // Required
		AttributesToGet: []*string{
			aws.String("AttributeName"), // Required
			// More values...
		},
		ConsistentRead: aws.Bool(true),
		ExpressionAttributeNames: map[string]*string{
			"Key": aws.String("AttributeName"), // Required
			// More values...
		},
		ProjectionExpression:   aws.String("ProjectionExpression"),
		ReturnConsumedCapacity: aws.String("ReturnConsumedCapacity"),
	}
	resp, err := svc.GetItem(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) GetItemRequest 

func (c *DynamoDB) GetItemRequest(input *GetItemInput) (req *request.Request, output *GetItemOutput)

GetItemRequest generates a "aws/request.Request" representing the client's request for the GetItem operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the GetItem method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the GetItemRequest method.
req, resp := client.GetItemRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) ListTables 

func (c *DynamoDB) ListTables(input *ListTablesInput) (*ListTablesOutput, error)

Returns an array of table names associated with the current account and endpoint. The output from ListTables is paginated, with each page returning a maximum of 100 table names.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.ListTablesInput{
		ExclusiveStartTableName: aws.String("TableName"),
		Limit:                   aws.Int64(1),
	}
	resp, err := svc.ListTables(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) ListTablesPages 

func (c *DynamoDB) ListTablesPages(input *ListTablesInput, fn func(p *ListTablesOutput, lastPage bool) (shouldContinue bool)) error

ListTablesPages iterates over the pages of a ListTables operation, calling the "fn" function with the response data for each page. To stop iterating, return false from the fn function.

See ListTables method for more information on how to use this operation.

Note: This operation can generate multiple requests to a service. 

// Example iterating over at most 3 pages of a ListTables operation.
pageNum := 0
err := client.ListTablesPages(params,
    func(page *ListTablesOutput, lastPage bool) bool {
        pageNum++
        fmt.Println(page)
        return pageNum <= 3
    })

func (*DynamoDB) ListTablesRequest 

func (c *DynamoDB) ListTablesRequest(input *ListTablesInput) (req *request.Request, output *ListTablesOutput)

ListTablesRequest generates a "aws/request.Request" representing the client's request for the ListTables operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the ListTables method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the ListTablesRequest method.
req, resp := client.ListTablesRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) PutItem 

func (c *DynamoDB) PutItem(input *PutItemInput) (*PutItemOutput, error)

Creates a new item, or replaces an old item with a new item. If an item that has the same primary key as the new item already exists in the specified table, the new item completely replaces the existing item. You can perform a conditional put operation (add a new item if one with the specified primary key doesn't exist), or replace an existing item if it has certain attribute values.

In addition to putting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.

When you add an item, the primary key attribute(s) are the only required attributes. Attribute values cannot be null. String and Binary type attributes must have lengths greater than zero. Set type attributes cannot be empty. Requests with empty values will be rejected with a ValidationException exception.

You can request that PutItem return either a copy of the original item (before the update) or a copy of the updated item (after the update). For more information, see the ReturnValues description below. 

To prevent a new item from replacing an existing item, use a conditional

expression that contains the attribute_not_exists function with the name of the attribute being used as the partition key for the table. Since every record must contain that attribute, the attribute_not_exists function will only succeed if no matching item exists. 

For more information about using this API, see Working with Items (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithItems.html)

in the Amazon DynamoDB Developer Guide.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.PutItemInput{
		Item: map[string]*dynamodb.AttributeValue{ // Required
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		TableName:           aws.String("TableName"), // Required
		ConditionExpression: aws.String("ConditionExpression"),
		ConditionalOperator: aws.String("ConditionalOperator"),
		Expected: map[string]*dynamodb.ExpectedAttributeValue{
			"Key": { // Required
				AttributeValueList: []*dynamodb.AttributeValue{
					{ // Required
						B:    []byte("PAYLOAD"),
						BOOL: aws.Bool(true),
						BS: [][]byte{
							[]byte("PAYLOAD"), // Required
							// More values...
						},
						L: []*dynamodb.AttributeValue{
							{ // Required
								// Recursive values...
							},
							// More values...
						},
						M: map[string]*dynamodb.AttributeValue{
							"Key": { // Required
								// Recursive values...
							},
							// More values...
						},
						N: aws.String("NumberAttributeValue"),
						NS: []*string{
							aws.String("NumberAttributeValue"), // Required
							// More values...
						},
						NULL: aws.Bool(true),
						S:    aws.String("StringAttributeValue"),
						SS: []*string{
							aws.String("StringAttributeValue"), // Required
							// More values...
						},
					},
					// More values...
				},
				ComparisonOperator: aws.String("ComparisonOperator"),
				Exists:             aws.Bool(true),
				Value: &dynamodb.AttributeValue{
					B:    []byte("PAYLOAD"),
					BOOL: aws.Bool(true),
					BS: [][]byte{
						[]byte("PAYLOAD"), // Required
						// More values...
					},
					L: []*dynamodb.AttributeValue{
						{ // Required
							// Recursive values...
						},
						// More values...
					},
					M: map[string]*dynamodb.AttributeValue{
						"Key": { // Required
							// Recursive values...
						},
						// More values...
					},
					N: aws.String("NumberAttributeValue"),
					NS: []*string{
						aws.String("NumberAttributeValue"), // Required
						// More values...
					},
					NULL: aws.Bool(true),
					S:    aws.String("StringAttributeValue"),
					SS: []*string{
						aws.String("StringAttributeValue"), // Required
						// More values...
					},
				},
			},
			// More values...
		},
		ExpressionAttributeNames: map[string]*string{
			"Key": aws.String("AttributeName"), // Required
			// More values...
		},
		ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		ReturnConsumedCapacity:      aws.String("ReturnConsumedCapacity"),
		ReturnItemCollectionMetrics: aws.String("ReturnItemCollectionMetrics"),
		ReturnValues:                aws.String("ReturnValue"),
	}
	resp, err := svc.PutItem(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) PutItemRequest 

func (c *DynamoDB) PutItemRequest(input *PutItemInput) (req *request.Request, output *PutItemOutput)

PutItemRequest generates a "aws/request.Request" representing the client's request for the PutItem operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the PutItem method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the PutItemRequest method.
req, resp := client.PutItemRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) Query 

func (c *DynamoDB) Query(input *QueryInput) (*QueryOutput, error)

A Query operation uses the primary key of a table or a secondary index to directly access items from that table or index.

Use the KeyConditionExpression parameter to provide a specific value for the partition key. The Query operation will return all of the items from the table or index with that partition key value. You can optionally narrow the scope of the Query operation by specifying a sort key value and a comparison operator in KeyConditionExpression. You can use the ScanIndexForward parameter to get results in forward or reverse order, by sort key.

Queries that do not return results consume the minimum number of read capacity units for that type of read operation.

If the total number of items meeting the query criteria exceeds the result set size limit of 1 MB, the query stops and results are returned to the user with the LastEvaluatedKey element to continue the query in a subsequent operation. Unlike a Scan operation, a Query operation never returns both an empty result set and a LastEvaluatedKey value. LastEvaluatedKey is only provided if you have used the Limit parameter, or if the result set exceeds 1 MB (prior to applying a filter).

You can query a table, a local secondary index, or a global secondary index. For a query on a table or on a local secondary index, you can set the ConsistentRead parameter to true and obtain a strongly consistent result. Global secondary indexes support eventually consistent reads only, so do not specify ConsistentRead when querying a global secondary index.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.QueryInput{
		TableName: aws.String("TableName"), // Required
		AttributesToGet: []*string{
			aws.String("AttributeName"), // Required
			// More values...
		},
		ConditionalOperator: aws.String("ConditionalOperator"),
		ConsistentRead:      aws.Bool(true),
		ExclusiveStartKey: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		ExpressionAttributeNames: map[string]*string{
			"Key": aws.String("AttributeName"), // Required
			// More values...
		},
		ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		FilterExpression:       aws.String("ConditionExpression"),
		IndexName:              aws.String("IndexName"),
		KeyConditionExpression: aws.String("KeyExpression"),
		KeyConditions: map[string]*dynamodb.Condition{
			"Key": { // Required
				ComparisonOperator: aws.String("ComparisonOperator"), // Required
				AttributeValueList: []*dynamodb.AttributeValue{
					{ // Required
						B:    []byte("PAYLOAD"),
						BOOL: aws.Bool(true),
						BS: [][]byte{
							[]byte("PAYLOAD"), // Required
							// More values...
						},
						L: []*dynamodb.AttributeValue{
							{ // Required
								// Recursive values...
							},
							// More values...
						},
						M: map[string]*dynamodb.AttributeValue{
							"Key": { // Required
								// Recursive values...
							},
							// More values...
						},
						N: aws.String("NumberAttributeValue"),
						NS: []*string{
							aws.String("NumberAttributeValue"), // Required
							// More values...
						},
						NULL: aws.Bool(true),
						S:    aws.String("StringAttributeValue"),
						SS: []*string{
							aws.String("StringAttributeValue"), // Required
							// More values...
						},
					},
					// More values...
				},
			},
			// More values...
		},
		Limit:                aws.Int64(1),
		ProjectionExpression: aws.String("ProjectionExpression"),
		QueryFilter: map[string]*dynamodb.Condition{
			"Key": { // Required
				ComparisonOperator: aws.String("ComparisonOperator"), // Required
				AttributeValueList: []*dynamodb.AttributeValue{
					{ // Required
						B:    []byte("PAYLOAD"),
						BOOL: aws.Bool(true),
						BS: [][]byte{
							[]byte("PAYLOAD"), // Required
							// More values...
						},
						L: []*dynamodb.AttributeValue{
							{ // Required
								// Recursive values...
							},
							// More values...
						},
						M: map[string]*dynamodb.AttributeValue{
							"Key": { // Required
								// Recursive values...
							},
							// More values...
						},
						N: aws.String("NumberAttributeValue"),
						NS: []*string{
							aws.String("NumberAttributeValue"), // Required
							// More values...
						},
						NULL: aws.Bool(true),
						S:    aws.String("StringAttributeValue"),
						SS: []*string{
							aws.String("StringAttributeValue"), // Required
							// More values...
						},
					},
					// More values...
				},
			},
			// More values...
		},
		ReturnConsumedCapacity: aws.String("ReturnConsumedCapacity"),
		ScanIndexForward:       aws.Bool(true),
		Select:                 aws.String("Select"),
	}
	resp, err := svc.Query(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) QueryPages 

func (c *DynamoDB) QueryPages(input *QueryInput, fn func(p *QueryOutput, lastPage bool) (shouldContinue bool)) error

QueryPages iterates over the pages of a Query operation, calling the "fn" function with the response data for each page. To stop iterating, return false from the fn function.

See Query method for more information on how to use this operation.

Note: This operation can generate multiple requests to a service. 

// Example iterating over at most 3 pages of a Query operation.
pageNum := 0
err := client.QueryPages(params,
    func(page *QueryOutput, lastPage bool) bool {
        pageNum++
        fmt.Println(page)
        return pageNum <= 3
    })

func (*DynamoDB) QueryRequest 

func (c *DynamoDB) QueryRequest(input *QueryInput) (req *request.Request, output *QueryOutput)

QueryRequest generates a "aws/request.Request" representing the client's request for the Query operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the Query method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the QueryRequest method.
req, resp := client.QueryRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) Scan 

func (c *DynamoDB) Scan(input *ScanInput) (*ScanOutput, error)

The Scan operation returns one or more items and item attributes by accessing every item in a table or a secondary index. To have DynamoDB return fewer items, you can provide a ScanFilter operation.

If the total number of scanned items exceeds the maximum data set size limit of 1 MB, the scan stops and results are returned to the user as a LastEvaluatedKey value to continue the scan in a subsequent operation. The results also include the number of items exceeding the limit. A scan can result in no table data meeting the filter criteria.

By default, Scan operations proceed sequentially; however, for faster performance on a large table or secondary index, applications can request a parallel Scan operation by providing the Segment and TotalSegments parameters. For more information, see Parallel Scan (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html#QueryAndScanParallelScan) in the Amazon DynamoDB Developer Guide.

By default, Scan uses eventually consistent reads when accessing the data in a table; therefore, the result set might not include the changes to data in the table immediately before the operation began. If you need a consistent copy of the data, as of the time that the Scan begins, you can set the ConsistentRead parameter to true.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.ScanInput{
		TableName: aws.String("TableName"), // Required
		AttributesToGet: []*string{
			aws.String("AttributeName"), // Required
			// More values...
		},
		ConditionalOperator: aws.String("ConditionalOperator"),
		ConsistentRead:      aws.Bool(true),
		ExclusiveStartKey: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		ExpressionAttributeNames: map[string]*string{
			"Key": aws.String("AttributeName"), // Required
			// More values...
		},
		ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		FilterExpression:       aws.String("ConditionExpression"),
		IndexName:              aws.String("IndexName"),
		Limit:                  aws.Int64(1),
		ProjectionExpression:   aws.String("ProjectionExpression"),
		ReturnConsumedCapacity: aws.String("ReturnConsumedCapacity"),
		ScanFilter: map[string]*dynamodb.Condition{
			"Key": { // Required
				ComparisonOperator: aws.String("ComparisonOperator"), // Required
				AttributeValueList: []*dynamodb.AttributeValue{
					{ // Required
						B:    []byte("PAYLOAD"),
						BOOL: aws.Bool(true),
						BS: [][]byte{
							[]byte("PAYLOAD"), // Required
							// More values...
						},
						L: []*dynamodb.AttributeValue{
							{ // Required
								// Recursive values...
							},
							// More values...
						},
						M: map[string]*dynamodb.AttributeValue{
							"Key": { // Required
								// Recursive values...
							},
							// More values...
						},
						N: aws.String("NumberAttributeValue"),
						NS: []*string{
							aws.String("NumberAttributeValue"), // Required
							// More values...
						},
						NULL: aws.Bool(true),
						S:    aws.String("StringAttributeValue"),
						SS: []*string{
							aws.String("StringAttributeValue"), // Required
							// More values...
						},
					},
					// More values...
				},
			},
			// More values...
		},
		Segment:       aws.Int64(1),
		Select:        aws.String("Select"),
		TotalSegments: aws.Int64(1),
	}
	resp, err := svc.Scan(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) ScanPages 

func (c *DynamoDB) ScanPages(input *ScanInput, fn func(p *ScanOutput, lastPage bool) (shouldContinue bool)) error

ScanPages iterates over the pages of a Scan operation, calling the "fn" function with the response data for each page. To stop iterating, return false from the fn function.

See Scan method for more information on how to use this operation.

Note: This operation can generate multiple requests to a service. 

// Example iterating over at most 3 pages of a Scan operation.
pageNum := 0
err := client.ScanPages(params,
    func(page *ScanOutput, lastPage bool) bool {
        pageNum++
        fmt.Println(page)
        return pageNum <= 3
    })

func (*DynamoDB) ScanRequest 

func (c *DynamoDB) ScanRequest(input *ScanInput) (req *request.Request, output *ScanOutput)

ScanRequest generates a "aws/request.Request" representing the client's request for the Scan operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the Scan method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the ScanRequest method.
req, resp := client.ScanRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) UpdateItem 

func (c *DynamoDB) UpdateItem(input *UpdateItemInput) (*UpdateItemOutput, error)

Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).

You can also return the item's attribute values in the same UpdateItem operation using the ReturnValues parameter.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.UpdateItemInput{
		Key: map[string]*dynamodb.AttributeValue{ // Required
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		TableName: aws.String("TableName"), // Required
		AttributeUpdates: map[string]*dynamodb.AttributeValueUpdate{
			"Key": { // Required
				Action: aws.String("AttributeAction"),
				Value: &dynamodb.AttributeValue{
					B:    []byte("PAYLOAD"),
					BOOL: aws.Bool(true),
					BS: [][]byte{
						[]byte("PAYLOAD"), // Required
						// More values...
					},
					L: []*dynamodb.AttributeValue{
						{ // Required
							// Recursive values...
						},
						// More values...
					},
					M: map[string]*dynamodb.AttributeValue{
						"Key": { // Required
							// Recursive values...
						},
						// More values...
					},
					N: aws.String("NumberAttributeValue"),
					NS: []*string{
						aws.String("NumberAttributeValue"), // Required
						// More values...
					},
					NULL: aws.Bool(true),
					S:    aws.String("StringAttributeValue"),
					SS: []*string{
						aws.String("StringAttributeValue"), // Required
						// More values...
					},
				},
			},
			// More values...
		},
		ConditionExpression: aws.String("ConditionExpression"),
		ConditionalOperator: aws.String("ConditionalOperator"),
		Expected: map[string]*dynamodb.ExpectedAttributeValue{
			"Key": { // Required
				AttributeValueList: []*dynamodb.AttributeValue{
					{ // Required
						B:    []byte("PAYLOAD"),
						BOOL: aws.Bool(true),
						BS: [][]byte{
							[]byte("PAYLOAD"), // Required
							// More values...
						},
						L: []*dynamodb.AttributeValue{
							{ // Required
								// Recursive values...
							},
							// More values...
						},
						M: map[string]*dynamodb.AttributeValue{
							"Key": { // Required
								// Recursive values...
							},
							// More values...
						},
						N: aws.String("NumberAttributeValue"),
						NS: []*string{
							aws.String("NumberAttributeValue"), // Required
							// More values...
						},
						NULL: aws.Bool(true),
						S:    aws.String("StringAttributeValue"),
						SS: []*string{
							aws.String("StringAttributeValue"), // Required
							// More values...
						},
					},
					// More values...
				},
				ComparisonOperator: aws.String("ComparisonOperator"),
				Exists:             aws.Bool(true),
				Value: &dynamodb.AttributeValue{
					B:    []byte("PAYLOAD"),
					BOOL: aws.Bool(true),
					BS: [][]byte{
						[]byte("PAYLOAD"), // Required
						// More values...
					},
					L: []*dynamodb.AttributeValue{
						{ // Required
							// Recursive values...
						},
						// More values...
					},
					M: map[string]*dynamodb.AttributeValue{
						"Key": { // Required
							// Recursive values...
						},
						// More values...
					},
					N: aws.String("NumberAttributeValue"),
					NS: []*string{
						aws.String("NumberAttributeValue"), // Required
						// More values...
					},
					NULL: aws.Bool(true),
					S:    aws.String("StringAttributeValue"),
					SS: []*string{
						aws.String("StringAttributeValue"), // Required
						// More values...
					},
				},
			},
			// More values...
		},
		ExpressionAttributeNames: map[string]*string{
			"Key": aws.String("AttributeName"), // Required
			// More values...
		},
		ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
			"Key": { // Required
				B:    []byte("PAYLOAD"),
				BOOL: aws.Bool(true),
				BS: [][]byte{
					[]byte("PAYLOAD"), // Required
					// More values...
				},
				L: []*dynamodb.AttributeValue{
					{ // Required
						// Recursive values...
					},
					// More values...
				},
				M: map[string]*dynamodb.AttributeValue{
					"Key": { // Required
						// Recursive values...
					},
					// More values...
				},
				N: aws.String("NumberAttributeValue"),
				NS: []*string{
					aws.String("NumberAttributeValue"), // Required
					// More values...
				},
				NULL: aws.Bool(true),
				S:    aws.String("StringAttributeValue"),
				SS: []*string{
					aws.String("StringAttributeValue"), // Required
					// More values...
				},
			},
			// More values...
		},
		ReturnConsumedCapacity:      aws.String("ReturnConsumedCapacity"),
		ReturnItemCollectionMetrics: aws.String("ReturnItemCollectionMetrics"),
		ReturnValues:                aws.String("ReturnValue"),
		UpdateExpression:            aws.String("UpdateExpression"),
	}
	resp, err := svc.UpdateItem(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) UpdateItemRequest 

func (c *DynamoDB) UpdateItemRequest(input *UpdateItemInput) (req *request.Request, output *UpdateItemOutput)

UpdateItemRequest generates a "aws/request.Request" representing the client's request for the UpdateItem operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the UpdateItem method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the UpdateItemRequest method.
req, resp := client.UpdateItemRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) UpdateTable 

func (c *DynamoDB) UpdateTable(input *UpdateTableInput) (*UpdateTableOutput, error)

Modifies the provisioned throughput settings, global secondary indexes, or DynamoDB Streams settings for a given table.

You can only perform one of the following operations at once: 

Modify the provisioned throughput settings of the table.

Enable or disable Streams on the table.

Remove a global secondary index from the table.

Create a new global secondary index on the table. Once the index begins

backfilling, you can use UpdateTable to perform other operations. 

UpdateTable is an asynchronous operation; while it is executing, the

table status changes from ACTIVE to UPDATING. While it is UPDATING, you cannot issue another UpdateTable request. When the table returns to the ACTIVE state, the UpdateTable operation is complete.

Example 
package main

import (
	"fmt"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

func main() {
	sess, err := session.NewSession()
	if err != nil {
		fmt.Println("failed to create session,", err)
		return
	}

	svc := dynamodb.New(sess)

	params := &dynamodb.UpdateTableInput{
		TableName: aws.String("TableName"), // Required
		AttributeDefinitions: []*dynamodb.AttributeDefinition{
			{ // Required
				AttributeName: aws.String("KeySchemaAttributeName"), // Required
				AttributeType: aws.String("ScalarAttributeType"),    // Required
			},
			// More values...
		},
		GlobalSecondaryIndexUpdates: []*dynamodb.GlobalSecondaryIndexUpdate{
			{ // Required
				Create: &dynamodb.CreateGlobalSecondaryIndexAction{
					IndexName: aws.String("IndexName"), // Required
					KeySchema: []*dynamodb.KeySchemaElement{ // Required
						{ // Required
							AttributeName: aws.String("KeySchemaAttributeName"), // Required
							KeyType:       aws.String("KeyType"),                // Required
						},
						// More values...
					},
					Projection: &dynamodb.Projection{ // Required
						NonKeyAttributes: []*string{
							aws.String("NonKeyAttributeName"), // Required
							// More values...
						},
						ProjectionType: aws.String("ProjectionType"),
					},
					ProvisionedThroughput: &dynamodb.ProvisionedThroughput{ // Required
						ReadCapacityUnits:  aws.Int64(1), // Required
						WriteCapacityUnits: aws.Int64(1), // Required
					},
				},
				Delete: &dynamodb.DeleteGlobalSecondaryIndexAction{
					IndexName: aws.String("IndexName"), // Required
				},
				Update: &dynamodb.UpdateGlobalSecondaryIndexAction{
					IndexName: aws.String("IndexName"), // Required
					ProvisionedThroughput: &dynamodb.ProvisionedThroughput{ // Required
						ReadCapacityUnits:  aws.Int64(1), // Required
						WriteCapacityUnits: aws.Int64(1), // Required
					},
				},
			},
			// More values...
		},
		ProvisionedThroughput: &dynamodb.ProvisionedThroughput{
			ReadCapacityUnits:  aws.Int64(1), // Required
			WriteCapacityUnits: aws.Int64(1), // Required
		},
		StreamSpecification: &dynamodb.StreamSpecification{
			StreamEnabled:  aws.Bool(true),
			StreamViewType: aws.String("StreamViewType"),
		},
	}
	resp, err := svc.UpdateTable(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

Output:

func (*DynamoDB) UpdateTableRequest 

func (c *DynamoDB) UpdateTableRequest(input *UpdateTableInput) (req *request.Request, output *UpdateTableOutput)

UpdateTableRequest generates a "aws/request.Request" representing the client's request for the UpdateTable operation. The "output" return value can be used to capture response data after the request's "Send" method is called.

Creating a request object using this method should be used when you want to inject custom logic into the request's lifecycle using a custom handler, or if you want to access properties on the request object before or after sending the request. If you just want the service response, call the UpdateTable method directly instead.

Note: You must call the "Send" method on the returned request object in order to execute the request. 

// Example sending a request using the UpdateTableRequest method.
req, resp := client.UpdateTableRequest(params)

err := req.Send()
if err == nil { // resp is now filled
    fmt.Println(resp)
}

func (*DynamoDB) WaitUntilTableExists 

func (c *DynamoDB) WaitUntilTableExists(input *DescribeTableInput) error

func (*DynamoDB) WaitUntilTableNotExists 

func (c *DynamoDB) WaitUntilTableNotExists(input *DescribeTableInput) error

type ExpectedAttributeValue 

type ExpectedAttributeValue struct {

	// One or more values to evaluate against the supplied attribute. The number
	// of values in the list depends on the ComparisonOperator being used.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For Binary, DynamoDB treats each byte of the binary data as unsigned when
	// it compares binary values.
	//
	// For information on specifying data types in JSON, see JSON Data Format (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataFormat.html)
	// in the Amazon DynamoDB Developer Guide.
	AttributeValueList []*AttributeValue `type:"list"`

	// A comparator for evaluating attributes in the AttributeValueList. For example,
	// equals, greater than, less than, etc.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// The following are descriptions of each comparison operator.
	//
	//    EQ : Equal. EQ is supported for all datatypes, including lists and maps.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, Binary, String Set, Number Set, or Binary Set. If an item
	// contains an AttributeValue element of a different type than the one provided
	// in the request, the value does not match. For example, {"S":"6"} does not
	// equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     NE : Not equal. NE is supported for all datatypes, including lists and
	// maps.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, Binary, String Set, Number Set, or Binary Set. If an item contains
	// an AttributeValue of a different type than the one provided in the request,
	// the value does not match. For example, {"S":"6"} does not equal {"N":"6"}.
	// Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     LE : Less than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     LT : Less than.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GE : Greater than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GT : Greater than.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     NOT_NULL : The attribute exists. NOT_NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the existence of an attribute, not its data type.
	// If the data type of attribute "a" is null, and you evaluate it using NOT_NULL,
	// the result is a Boolean true. This result is because the attribute "a" exists;
	// its data type is not relevant to the NOT_NULL comparison operator.
	//
	//     NULL : The attribute does not exist. NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the nonexistence of an attribute, not its data
	// type. If the data type of attribute "a" is null, and you evaluate it using
	// NULL, the result is a Boolean false. This is because the attribute "a" exists;
	// its data type is not relevant to the NULL comparison operator.
	//
	//     CONTAINS : Checks for a subsequence, or value in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is of type String, then the operator checks for a substring match.
	// If the target attribute of the comparison is of type Binary, then the operator
	// looks for a subsequence of the target that matches the input. If the target
	// attribute of the comparison is a set ("SS", "NS", or "BS"), then the operator
	// evaluates to true if it finds an exact match with any member of the set.
	//
	// CONTAINS is supported for lists: When evaluating "a CONTAINS b", "a" can
	// be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    NOT_CONTAINS : Checks for absence of a subsequence, or absence of a value
	// in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is a String, then the operator checks for the absence of a substring
	// match. If the target attribute of the comparison is Binary, then the operator
	// checks for the absence of a subsequence of the target that matches the input.
	// If the target attribute of the comparison is a set ("SS", "NS", or "BS"),
	// then the operator evaluates to true if it does not find an exact match with
	// any member of the set.
	//
	// NOT_CONTAINS is supported for lists: When evaluating "a NOT CONTAINS b",
	// "a" can be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    BEGINS_WITH : Checks for a prefix.
	//
	//  AttributeValueList can contain only one AttributeValue of type String or
	// Binary (not a Number or a set type). The target attribute of the comparison
	// must be of type String or Binary (not a Number or a set type).
	//
	//     IN : Checks for matching elements within two sets.
	//
	//  AttributeValueList can contain one or more AttributeValue elements of type
	// String, Number, or Binary (not a set type). These attributes are compared
	// against an existing set type attribute of an item. If any elements of the
	// input set are present in the item attribute, the expression evaluates to
	// true.
	//
	//    BETWEEN : Greater than or equal to the first value, and less than or
	// equal to the second value.
	//
	//  AttributeValueList must contain two AttributeValue elements of the same
	// type, either String, Number, or Binary (not a set type). A target attribute
	// matches if the target value is greater than, or equal to, the first element
	// and less than, or equal to, the second element. If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also,
	// {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
	ComparisonOperator *string `type:"string" enum:"ComparisonOperator"`

	// Causes DynamoDB to evaluate the value before attempting a conditional operation:
	//
	//   If Exists is true, DynamoDB will check to see if that attribute value
	// already exists in the table. If it is found, then the operation succeeds.
	// If it is not found, the operation fails with a ConditionalCheckFailedException.
	//
	//   If Exists is false, DynamoDB assumes that the attribute value does not
	// exist in the table. If in fact the value does not exist, then the assumption
	// is valid and the operation succeeds. If the value is found, despite the assumption
	// that it does not exist, the operation fails with a ConditionalCheckFailedException.
	//
	//   The default setting for Exists is true. If you supply a Value all by itself,
	// DynamoDB assumes the attribute exists: You don't have to set Exists to true,
	// because it is implied.
	//
	// DynamoDB returns a ValidationException if:
	//
	//    Exists is true but there is no Value to check. (You expect a value to
	// exist, but don't specify what that value is.)
	//
	//    Exists is false but you also provide a Value. (You cannot expect an attribute
	// to have a value, while also expecting it not to exist.)
	Exists *bool `type:"boolean"`

	// Represents the data for an attribute. You can set one, and only one, of the
	// elements.
	//
	// Each attribute in an item is a name-value pair. An attribute can be single-valued
	// or multi-valued set. For example, a book item can have title and authors
	// attributes. Each book has one title but can have many authors. The multi-valued
	// attribute is a set; duplicate values are not allowed.
	Value *AttributeValue `type:"structure"`
	// contains filtered or unexported fields
}

Represents a condition to be compared with an attribute value. This condition can be used with DeleteItem, PutItem or UpdateItem operations; if the comparison evaluates to true, the operation succeeds; if not, the operation fails. You can use ExpectedAttributeValue in one of two different ways: 

Use AttributeValueList to specify one or more values to compare against

an attribute. Use ComparisonOperator to specify how you want to perform the comparison. If the comparison evaluates to true, then the conditional operation succeeds. 

Use Value to specify a value that DynamoDB will compare against an attribute.

If the values match, then ExpectedAttributeValue evaluates to true and the conditional operation succeeds. Optionally, you can also set Exists to false, indicating that you do not expect to find the attribute value in the table. In this case, the conditional operation succeeds only if the comparison evaluates to false. 

Value and Exists are incompatible with AttributeValueList and ComparisonOperator.

Note that if you use both sets of parameters at once, DynamoDB will return a ValidationException exception.

func (ExpectedAttributeValue) GoString 

func (s ExpectedAttributeValue) GoString() string

GoString returns the string representation

func (ExpectedAttributeValue) String 

func (s ExpectedAttributeValue) String() string

String returns the string representation

type GetItemInput 

type GetItemInput struct {

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ProjectionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	// This parameter allows you to retrieve attributes of type List or Map; however,
	// it cannot retrieve individual elements within a List or a Map.
	//
	//  The names of one or more attributes to retrieve. If no attribute names
	// are provided, then all attributes will be returned. If any of the requested
	// attributes are not found, they will not appear in the result.
	//
	// Note that AttributesToGet has no effect on provisioned throughput consumption.
	// DynamoDB determines capacity units consumed based on item size, not on the
	// amount of data that is returned to an application.
	AttributesToGet []*string `min:"1" type:"list"`

	// Determines the read consistency model: If set to true, then the operation
	// uses strongly consistent reads; otherwise, the operation uses eventually
	// consistent reads.
	ConsistentRead *bool `type:"boolean"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// A map of attribute names to AttributeValue objects, representing the primary
	// key of the item to retrieve.
	//
	// For the primary key, you must provide all of the attributes. For example,
	// with a simple primary key, you only need to provide a value for the partition
	// key. For a composite primary key, you must provide values for both the partition
	// key and the sort key.
	Key map[string]*AttributeValue `type:"map" required:"true"`

	// A string that identifies one or more attributes to retrieve from the table.
	// These attributes can include scalars, sets, or elements of a JSON document.
	// The attributes in the expression must be separated by commas.
	//
	// If no attribute names are specified, then all attributes will be returned.
	// If any of the requested attributes are not found, they will not appear in
	// the result.
	//
	// For more information, see Accessing Item Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ProjectionExpression replaces the legacy AttributesToGet parameter.
	ProjectionExpression *string `type:"string"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// The name of the table containing the requested item.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a GetItem operation.

func (GetItemInput) GoString 

func (s GetItemInput) GoString() string

GoString returns the string representation

func (GetItemInput) String 

func (s GetItemInput) String() string

String returns the string representation

func (*GetItemInput) Validate 

func (s *GetItemInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type GetItemOutput 

type GetItemOutput struct {

	// The capacity units consumed by an operation. The data returned includes the
	// total provisioned throughput consumed, along with statistics for the table
	// and any indexes involved in the operation. ConsumedCapacity is only returned
	// if the request asked for it. For more information, see Provisioned Throughput
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html)
	// in the Amazon DynamoDB Developer Guide.
	ConsumedCapacity *ConsumedCapacity `type:"structure"`

	// A map of attribute names to AttributeValue objects, as specified by AttributesToGet.
	Item map[string]*AttributeValue `type:"map"`
	// contains filtered or unexported fields
}

Represents the output of a GetItem operation.

func (GetItemOutput) GoString 

func (s GetItemOutput) GoString() string

GoString returns the string representation

func (GetItemOutput) String 

func (s GetItemOutput) String() string

String returns the string representation

type GlobalSecondaryIndex 

type GlobalSecondaryIndex struct {

	// The name of the global secondary index. The name must be unique among all
	// other indexes on this table.
	IndexName *string `min:"3" type:"string" required:"true"`

	// The complete key schema for a global secondary index, which consists of one
	// or more pairs of attribute names and key types:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//    The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	KeySchema []*KeySchemaElement `min:"1" type:"list" required:"true"`

	// Represents attributes that are copied (projected) from the table into an
	// index. These are in addition to the primary key attributes and index key
	// attributes, which are automatically projected.
	Projection *Projection `type:"structure" required:"true"`

	// Represents the provisioned throughput settings for a specified table or index.
	// The settings can be modified using the UpdateTable operation.
	//
	// For current minimum and maximum provisioned throughput values, see Limits
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html)
	// in the Amazon DynamoDB Developer Guide.
	ProvisionedThroughput *ProvisionedThroughput `type:"structure" required:"true"`
	// contains filtered or unexported fields
}

Represents the properties of a global secondary index.

func (GlobalSecondaryIndex) GoString 

func (s GlobalSecondaryIndex) GoString() string

GoString returns the string representation

func (GlobalSecondaryIndex) String 

func (s GlobalSecondaryIndex) String() string

String returns the string representation

func (*GlobalSecondaryIndex) Validate 

func (s *GlobalSecondaryIndex) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type GlobalSecondaryIndexDescription 

type GlobalSecondaryIndexDescription struct {

	// Indicates whether the index is currently backfilling. Backfilling is the
	// process of reading items from the table and determining whether they can
	// be added to the index. (Not all items will qualify: For example, a partition
	// key cannot have any duplicate values.) If an item can be added to the index,
	// DynamoDB will do so. After all items have been processed, the backfilling
	// operation is complete and Backfilling is false.
	//
	//  For indexes that were created during a CreateTable operation, the Backfilling
	// attribute does not appear in the DescribeTable output.
	Backfilling *bool `type:"boolean"`

	// The Amazon Resource Name (ARN) that uniquely identifies the index.
	IndexArn *string `type:"string"`

	// The name of the global secondary index.
	IndexName *string `min:"3" type:"string"`

	// The total size of the specified index, in bytes. DynamoDB updates this value
	// approximately every six hours. Recent changes might not be reflected in this
	// value.
	IndexSizeBytes *int64 `type:"long"`

	// The current state of the global secondary index:
	//
	//    CREATING - The index is being created.
	//
	//    UPDATING - The index is being updated.
	//
	//    DELETING - The index is being deleted.
	//
	//    ACTIVE - The index is ready for use.
	IndexStatus *string `type:"string" enum:"IndexStatus"`

	// The number of items in the specified index. DynamoDB updates this value approximately
	// every six hours. Recent changes might not be reflected in this value.
	ItemCount *int64 `type:"long"`

	// The complete key schema for a global secondary index, which consists of one
	// or more pairs of attribute names and key types:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//    The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	KeySchema []*KeySchemaElement `min:"1" type:"list"`

	// Represents attributes that are copied (projected) from the table into an
	// index. These are in addition to the primary key attributes and index key
	// attributes, which are automatically projected.
	Projection *Projection `type:"structure"`

	// Represents the provisioned throughput settings for the table, consisting
	// of read and write capacity units, along with data about increases and decreases.
	ProvisionedThroughput *ProvisionedThroughputDescription `type:"structure"`
	// contains filtered or unexported fields
}

Represents the properties of a global secondary index.

func (GlobalSecondaryIndexDescription) GoString 

func (s GlobalSecondaryIndexDescription) GoString() string

GoString returns the string representation

func (GlobalSecondaryIndexDescription) String 

func (s GlobalSecondaryIndexDescription) String() string

String returns the string representation

type GlobalSecondaryIndexUpdate 

type GlobalSecondaryIndexUpdate struct {

	// The parameters required for creating a global secondary index on an existing
	// table:
	//
	//    IndexName
	//
	//    KeySchema
	//
	//    AttributeDefinitions
	//
	//    Projection
	//
	//    ProvisionedThroughput
	Create *CreateGlobalSecondaryIndexAction `type:"structure"`

	// The name of an existing global secondary index to be removed.
	Delete *DeleteGlobalSecondaryIndexAction `type:"structure"`

	// The name of an existing global secondary index, along with new provisioned
	// throughput settings to be applied to that index.
	Update *UpdateGlobalSecondaryIndexAction `type:"structure"`
	// contains filtered or unexported fields
}

Represents one of the following: 

A new global secondary index to be added to an existing table.

New provisioned throughput parameters for an existing global secondary

index. 

An existing global secondary index to be removed from an existing table.

func (GlobalSecondaryIndexUpdate) GoString 

func (s GlobalSecondaryIndexUpdate) GoString() string

GoString returns the string representation

func (GlobalSecondaryIndexUpdate) String 

func (s GlobalSecondaryIndexUpdate) String() string

String returns the string representation

func (*GlobalSecondaryIndexUpdate) Validate 

func (s *GlobalSecondaryIndexUpdate) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ItemCollectionMetrics 

type ItemCollectionMetrics struct {

	// The partition key value of the item collection. This value is the same as
	// the partition key value of the item.
	ItemCollectionKey map[string]*AttributeValue `type:"map"`

	// An estimate of item collection size, in gigabytes. This value is a two-element
	// array containing a lower bound and an upper bound for the estimate. The estimate
	// includes the size of all the items in the table, plus the size of all attributes
	// projected into all of the local secondary indexes on that table. Use this
	// estimate to measure whether a local secondary index is approaching its size
	// limit.
	//
	// The estimate is subject to change over time; therefore, do not rely on the
	// precision or accuracy of the estimate.
	SizeEstimateRangeGB []*float64 `type:"list"`
	// contains filtered or unexported fields
}

Information about item collections, if any, that were affected by the operation. ItemCollectionMetrics is only returned if the request asked for it. If the table does not have any local secondary indexes, this information is not returned in the response.

func (ItemCollectionMetrics) GoString 

func (s ItemCollectionMetrics) GoString() string

GoString returns the string representation

func (ItemCollectionMetrics) String 

func (s ItemCollectionMetrics) String() string

String returns the string representation

type KeySchemaElement 

type KeySchemaElement struct {

	// The name of a key attribute.
	AttributeName *string `min:"1" type:"string" required:"true"`

	// The role that this key attribute will assume:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//    The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	KeyType *string `type:"string" required:"true" enum:"KeyType"`
	// contains filtered or unexported fields
}

Represents a single element of a key schema. A key schema specifies the attributes that make up the primary key of a table, or the key attributes of an index.

A KeySchemaElement represents exactly one attribute of the primary key. For example, a simple primary key would be represented by one KeySchemaElement (for the partition key). A composite primary key would require one KeySchemaElement for the partition key, and another KeySchemaElement for the sort key.

A KeySchemaElement must be a scalar, top-level attribute (not a nested attribute). The data type must be one of String, Number, or Binary. The attribute cannot be nested within a List or a Map.

func (KeySchemaElement) GoString 

func (s KeySchemaElement) GoString() string

GoString returns the string representation

func (KeySchemaElement) String 

func (s KeySchemaElement) String() string

String returns the string representation

func (*KeySchemaElement) Validate 

func (s *KeySchemaElement) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type KeysAndAttributes 

type KeysAndAttributes struct {

	// One or more attributes to retrieve from the table or index. If no attribute
	// names are specified then all attributes will be returned. If any of the specified
	// attributes are not found, they will not appear in the result.
	AttributesToGet []*string `min:"1" type:"list"`

	// The consistency of a read operation. If set to true, then a strongly consistent
	// read is used; otherwise, an eventually consistent read is used.
	ConsistentRead *bool `type:"boolean"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// The primary key attribute values that define the items and the attributes
	// associated with the items.
	Keys []map[string]*AttributeValue `min:"1" type:"list" required:"true"`

	// A string that identifies one or more attributes to retrieve from the table.
	// These attributes can include scalars, sets, or elements of a JSON document.
	// The attributes in the ProjectionExpression must be separated by commas.
	//
	// If no attribute names are specified, then all attributes will be returned.
	// If any of the requested attributes are not found, they will not appear in
	// the result.
	//
	// For more information, see Accessing Item Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ProjectionExpression replaces the legacy AttributesToGet parameter.
	ProjectionExpression *string `type:"string"`
	// contains filtered or unexported fields
}

Represents a set of primary keys and, for each key, the attributes to retrieve from the table.

For each primary key, you must provide all of the key attributes. For example, with a simple primary key, you only need to provide the partition key. For a composite primary key, you must provide both the partition key and the sort key.

func (KeysAndAttributes) GoString 

func (s KeysAndAttributes) GoString() string

GoString returns the string representation

func (KeysAndAttributes) String 

func (s KeysAndAttributes) String() string

String returns the string representation

func (*KeysAndAttributes) Validate 

func (s *KeysAndAttributes) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ListTablesInput 

type ListTablesInput struct {

	// The first table name that this operation will evaluate. Use the value that
	// was returned for LastEvaluatedTableName in a previous operation, so that
	// you can obtain the next page of results.
	ExclusiveStartTableName *string `min:"3" type:"string"`

	// A maximum number of table names to return. If this parameter is not specified,
	// the limit is 100.
	Limit *int64 `min:"1" type:"integer"`
	// contains filtered or unexported fields
}

Represents the input of a ListTables operation.

func (ListTablesInput) GoString 

func (s ListTablesInput) GoString() string

GoString returns the string representation

func (ListTablesInput) String 

func (s ListTablesInput) String() string

String returns the string representation

func (*ListTablesInput) Validate 

func (s *ListTablesInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ListTablesOutput 

type ListTablesOutput struct {

	// The name of the last table in the current page of results. Use this value
	// as the ExclusiveStartTableName in a new request to obtain the next page of
	// results, until all the table names are returned.
	//
	// If you do not receive a LastEvaluatedTableName value in the response, this
	// means that there are no more table names to be retrieved.
	LastEvaluatedTableName *string `min:"3" type:"string"`

	// The names of the tables associated with the current account at the current
	// endpoint. The maximum size of this array is 100.
	//
	// If LastEvaluatedTableName also appears in the output, you can use this value
	// as the ExclusiveStartTableName parameter in a subsequent ListTables request
	// and obtain the next page of results.
	TableNames []*string `type:"list"`
	// contains filtered or unexported fields
}

Represents the output of a ListTables operation.

func (ListTablesOutput) GoString 

func (s ListTablesOutput) GoString() string

GoString returns the string representation

func (ListTablesOutput) String 

func (s ListTablesOutput) String() string

String returns the string representation

type LocalSecondaryIndex 

type LocalSecondaryIndex struct {

	// The name of the local secondary index. The name must be unique among all
	// other indexes on this table.
	IndexName *string `min:"3" type:"string" required:"true"`

	// The complete key schema for the local secondary index, consisting of one
	// or more pairs of attribute names and key types:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//    The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	KeySchema []*KeySchemaElement `min:"1" type:"list" required:"true"`

	// Represents attributes that are copied (projected) from the table into an
	// index. These are in addition to the primary key attributes and index key
	// attributes, which are automatically projected.
	Projection *Projection `type:"structure" required:"true"`
	// contains filtered or unexported fields
}

Represents the properties of a local secondary index.

func (LocalSecondaryIndex) GoString 

func (s LocalSecondaryIndex) GoString() string

GoString returns the string representation

func (LocalSecondaryIndex) String 

func (s LocalSecondaryIndex) String() string

String returns the string representation

func (*LocalSecondaryIndex) Validate 

func (s *LocalSecondaryIndex) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type LocalSecondaryIndexDescription 

type LocalSecondaryIndexDescription struct {

	// The Amazon Resource Name (ARN) that uniquely identifies the index.
	IndexArn *string `type:"string"`

	// Represents the name of the local secondary index.
	IndexName *string `min:"3" type:"string"`

	// The total size of the specified index, in bytes. DynamoDB updates this value
	// approximately every six hours. Recent changes might not be reflected in this
	// value.
	IndexSizeBytes *int64 `type:"long"`

	// The number of items in the specified index. DynamoDB updates this value approximately
	// every six hours. Recent changes might not be reflected in this value.
	ItemCount *int64 `type:"long"`

	// The complete key schema for the local secondary index, consisting of one
	// or more pairs of attribute names and key types:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//    The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	KeySchema []*KeySchemaElement `min:"1" type:"list"`

	// Represents attributes that are copied (projected) from the table into an
	// index. These are in addition to the primary key attributes and index key
	// attributes, which are automatically projected.
	Projection *Projection `type:"structure"`
	// contains filtered or unexported fields
}

Represents the properties of a local secondary index.

func (LocalSecondaryIndexDescription) GoString 

func (s LocalSecondaryIndexDescription) GoString() string

GoString returns the string representation

func (LocalSecondaryIndexDescription) String 

func (s LocalSecondaryIndexDescription) String() string

String returns the string representation

type Projection 

type Projection struct {

	// Represents the non-key attribute names which will be projected into the index.
	//
	// For local secondary indexes, the total count of NonKeyAttributes summed
	// across all of the local secondary indexes, must not exceed 20. If you project
	// the same attribute into two different indexes, this counts as two distinct
	// attributes when determining the total.
	NonKeyAttributes []*string `min:"1" type:"list"`

	// The set of attributes that are projected into the index:
	//
	//    KEYS_ONLY - Only the index and primary keys are projected into the index.
	//
	//    INCLUDE - Only the specified table attributes are projected into the
	// index. The list of projected attributes are in NonKeyAttributes.
	//
	//    ALL - All of the table attributes are projected into the index.
	ProjectionType *string `type:"string" enum:"ProjectionType"`
	// contains filtered or unexported fields
}

Represents attributes that are copied (projected) from the table into an index. These are in addition to the primary key attributes and index key attributes, which are automatically projected.

func (Projection) GoString 

func (s Projection) GoString() string

GoString returns the string representation

func (Projection) String 

func (s Projection) String() string

String returns the string representation

func (*Projection) Validate 

func (s *Projection) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ProvisionedThroughput 

type ProvisionedThroughput struct {

	// The maximum number of strongly consistent reads consumed per second before
	// DynamoDB returns a ThrottlingException. For more information, see Specifying
	// Read and Write Requirements (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithTables.html#ProvisionedThroughput)
	// in the Amazon DynamoDB Developer Guide.
	ReadCapacityUnits *int64 `min:"1" type:"long" required:"true"`

	// The maximum number of writes consumed per second before DynamoDB returns
	// a ThrottlingException. For more information, see Specifying Read and Write
	// Requirements (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/WorkingWithTables.html#ProvisionedThroughput)
	// in the Amazon DynamoDB Developer Guide.
	WriteCapacityUnits *int64 `min:"1" type:"long" required:"true"`
	// contains filtered or unexported fields
}

Represents the provisioned throughput settings for a specified table or index. The settings can be modified using the UpdateTable operation.

For current minimum and maximum provisioned throughput values, see Limits (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html) in the Amazon DynamoDB Developer Guide.

func (ProvisionedThroughput) GoString 

func (s ProvisionedThroughput) GoString() string

GoString returns the string representation

func (ProvisionedThroughput) String 

func (s ProvisionedThroughput) String() string

String returns the string representation

func (*ProvisionedThroughput) Validate 

func (s *ProvisionedThroughput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ProvisionedThroughputDescription 

type ProvisionedThroughputDescription struct {

	// The date and time of the last provisioned throughput decrease for this table.
	LastDecreaseDateTime *time.Time `type:"timestamp" timestampFormat:"unix"`

	// The date and time of the last provisioned throughput increase for this table.
	LastIncreaseDateTime *time.Time `type:"timestamp" timestampFormat:"unix"`

	// The number of provisioned throughput decreases for this table during this
	// UTC calendar day. For current maximums on provisioned throughput decreases,
	// see Limits (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html)
	// in the Amazon DynamoDB Developer Guide.
	NumberOfDecreasesToday *int64 `min:"1" type:"long"`

	// The maximum number of strongly consistent reads consumed per second before
	// DynamoDB returns a ThrottlingException. Eventually consistent reads require
	// less effort than strongly consistent reads, so a setting of 50 ReadCapacityUnits
	// per second provides 100 eventually consistent ReadCapacityUnits per second.
	ReadCapacityUnits *int64 `min:"1" type:"long"`

	// The maximum number of writes consumed per second before DynamoDB returns
	// a ThrottlingException.
	WriteCapacityUnits *int64 `min:"1" type:"long"`
	// contains filtered or unexported fields
}

Represents the provisioned throughput settings for the table, consisting of read and write capacity units, along with data about increases and decreases.

func (ProvisionedThroughputDescription) GoString 

func (s ProvisionedThroughputDescription) GoString() string

GoString returns the string representation

func (ProvisionedThroughputDescription) String 

func (s ProvisionedThroughputDescription) String() string

String returns the string representation

type PutItemInput 

type PutItemInput struct {

	// A condition that must be satisfied in order for a conditional PutItem operation
	// to succeed.
	//
	// An expression can contain any of the following:
	//
	//   Functions: attribute_exists | attribute_not_exists | attribute_type |
	// contains | begins_with | size
	//
	// These function names are case-sensitive.
	//
	//   Comparison operators:  = | &#x3C;&#x3E; | &#x3C; | &#x3E; | &#x3C;= |
	// &#x3E;= | BETWEEN | IN
	//
	//    Logical operators: AND | OR | NOT
	//
	//   For more information on condition expressions, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ConditionExpression replaces the legacy ConditionalOperator and Expected
	// parameters.
	ConditionExpression *string `type:"string"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ConditionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  A logical operator to apply to the conditions in the Expected map:
	//
	//    AND - If all of the conditions evaluate to true, then the entire map
	// evaluates to true.
	//
	//    OR - If at least one of the conditions evaluate to true, then the entire
	// map evaluates to true.
	//
	//   If you omit ConditionalOperator, then AND is the default.
	//
	// The operation will succeed only if the entire map evaluates to true.
	//
	//  This parameter does not support attributes of type List or Map.
	ConditionalOperator *string `type:"string" enum:"ConditionalOperator"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ConditionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  A map of attribute/condition pairs. Expected provides a conditional block
	// for the PutItem operation.
	//
	//  This parameter does not support attributes of type List or Map.
	//
	//  Each element of Expected consists of an attribute name, a comparison operator,
	// and one or more values. DynamoDB compares the attribute with the value(s)
	// you supplied, using the comparison operator. For each Expected element, the
	// result of the evaluation is either true or false.
	//
	// If you specify more than one element in the Expected map, then by default
	// all of the conditions must evaluate to true. In other words, the conditions
	// are ANDed together. (You can use the ConditionalOperator parameter to OR
	// the conditions instead. If you do this, then at least one of the conditions
	// must evaluate to true, rather than all of them.)
	//
	// If the Expected map evaluates to true, then the conditional operation succeeds;
	// otherwise, it fails.
	//
	//  Expected contains the following:
	//
	//    AttributeValueList - One or more values to evaluate against the supplied
	// attribute. The number of values in the list depends on the ComparisonOperator
	// being used.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For type Binary, DynamoDB treats each byte of the binary data as unsigned
	// when it compares binary values.
	//
	//    ComparisonOperator - A comparator for evaluating attributes in the AttributeValueList.
	// When performing the comparison, DynamoDB uses strongly consistent reads.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// The following are descriptions of each comparison operator.
	//
	//    EQ : Equal. EQ is supported for all datatypes, including lists and maps.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, Binary, String Set, Number Set, or Binary Set. If an item
	// contains an AttributeValue element of a different type than the one provided
	// in the request, the value does not match. For example, {"S":"6"} does not
	// equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     NE : Not equal. NE is supported for all datatypes, including lists and
	// maps.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, Binary, String Set, Number Set, or Binary Set. If an item contains
	// an AttributeValue of a different type than the one provided in the request,
	// the value does not match. For example, {"S":"6"} does not equal {"N":"6"}.
	// Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     LE : Less than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     LT : Less than.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GE : Greater than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GT : Greater than.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     NOT_NULL : The attribute exists. NOT_NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the existence of an attribute, not its data type.
	// If the data type of attribute "a" is null, and you evaluate it using NOT_NULL,
	// the result is a Boolean true. This result is because the attribute "a" exists;
	// its data type is not relevant to the NOT_NULL comparison operator.
	//
	//     NULL : The attribute does not exist. NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the nonexistence of an attribute, not its data
	// type. If the data type of attribute "a" is null, and you evaluate it using
	// NULL, the result is a Boolean false. This is because the attribute "a" exists;
	// its data type is not relevant to the NULL comparison operator.
	//
	//     CONTAINS : Checks for a subsequence, or value in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is of type String, then the operator checks for a substring match.
	// If the target attribute of the comparison is of type Binary, then the operator
	// looks for a subsequence of the target that matches the input. If the target
	// attribute of the comparison is a set ("SS", "NS", or "BS"), then the operator
	// evaluates to true if it finds an exact match with any member of the set.
	//
	// CONTAINS is supported for lists: When evaluating "a CONTAINS b", "a" can
	// be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    NOT_CONTAINS : Checks for absence of a subsequence, or absence of a value
	// in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is a String, then the operator checks for the absence of a substring
	// match. If the target attribute of the comparison is Binary, then the operator
	// checks for the absence of a subsequence of the target that matches the input.
	// If the target attribute of the comparison is a set ("SS", "NS", or "BS"),
	// then the operator evaluates to true if it does not find an exact match with
	// any member of the set.
	//
	// NOT_CONTAINS is supported for lists: When evaluating "a NOT CONTAINS b",
	// "a" can be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    BEGINS_WITH : Checks for a prefix.
	//
	//  AttributeValueList can contain only one AttributeValue of type String or
	// Binary (not a Number or a set type). The target attribute of the comparison
	// must be of type String or Binary (not a Number or a set type).
	//
	//     IN : Checks for matching elements within two sets.
	//
	//  AttributeValueList can contain one or more AttributeValue elements of type
	// String, Number, or Binary (not a set type). These attributes are compared
	// against an existing set type attribute of an item. If any elements of the
	// input set are present in the item attribute, the expression evaluates to
	// true.
	//
	//    BETWEEN : Greater than or equal to the first value, and less than or
	// equal to the second value.
	//
	//  AttributeValueList must contain two AttributeValue elements of the same
	// type, either String, Number, or Binary (not a set type). A target attribute
	// matches if the target value is greater than, or equal to, the first element
	// and less than, or equal to, the second element. If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also,
	// {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
	//
	//     For usage examples of AttributeValueList and ComparisonOperator, see
	// Legacy Conditional Parameters (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	// For backward compatibility with previous DynamoDB releases, the following
	// parameters can be used instead of AttributeValueList and ComparisonOperator:
	//
	//    Value - A value for DynamoDB to compare with an attribute.
	//
	//    Exists - A Boolean value that causes DynamoDB to evaluate the value before
	// attempting the conditional operation:
	//
	//   If Exists is true, DynamoDB will check to see if that attribute value
	// already exists in the table. If it is found, then the condition evaluates
	// to true; otherwise the condition evaluate to false.
	//
	//   If Exists is false, DynamoDB assumes that the attribute value does not
	// exist in the table. If in fact the value does not exist, then the assumption
	// is valid and the condition evaluates to true. If the value is found, despite
	// the assumption that it does not exist, the condition evaluates to false.
	//
	//   Note that the default value for Exists is true.
	//
	//   The Value and Exists parameters are incompatible with AttributeValueList
	// and ComparisonOperator. Note that if you use both sets of parameters at once,
	// DynamoDB will return a ValidationException exception.
	Expected map[string]*ExpectedAttributeValue `type:"map"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// One or more values that can be substituted in an expression.
	//
	// Use the : (colon) character in an expression to dereference an attribute
	// value. For example, suppose that you wanted to check whether the value of
	// the ProductStatus attribute was one of the following:
	//
	//  Available | Backordered | Discontinued
	//
	// You would first need to specify ExpressionAttributeValues as follows:
	//
	//  { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"}
	// }
	//
	// You could then use these values in an expression, such as this:
	//
	//  ProductStatus IN (:avail, :back, :disc)
	//
	// For more information on expression attribute values, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeValues map[string]*AttributeValue `type:"map"`

	// A map of attribute name/value pairs, one for each attribute. Only the primary
	// key attributes are required; you can optionally provide other attribute name-value
	// pairs for the item.
	//
	// You must provide all of the attributes for the primary key. For example,
	// with a simple primary key, you only need to provide a value for the partition
	// key. For a composite primary key, you must provide both values for both the
	// partition key and the sort key.
	//
	// If you specify any attributes that are part of an index key, then the data
	// types for those attributes must match those of the schema in the table's
	// attribute definition.
	//
	// For more information about primary keys, see Primary Key (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html#DataModelPrimaryKey)
	// in the Amazon DynamoDB Developer Guide.
	//
	// Each element in the Item map is an AttributeValue object.
	Item map[string]*AttributeValue `type:"map" required:"true"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// Determines whether item collection metrics are returned. If set to SIZE,
	// the response includes statistics about item collections, if any, that were
	// modified during the operation are returned in the response. If set to NONE
	// (the default), no statistics are returned.
	ReturnItemCollectionMetrics *string `type:"string" enum:"ReturnItemCollectionMetrics"`

	// Use ReturnValues if you want to get the item attributes as they appeared
	// before they were updated with the PutItem request. For PutItem, the valid
	// values are:
	//
	//    NONE - If ReturnValues is not specified, or if its value is NONE, then
	// nothing is returned. (This setting is the default for ReturnValues.)
	//
	//    ALL_OLD - If PutItem overwrote an attribute name-value pair, then the
	// content of the old item is returned.
	//
	//    The ReturnValues parameter is used by several DynamoDB operations; however,
	// PutItem does not recognize any values other than NONE or ALL_OLD.
	ReturnValues *string `type:"string" enum:"ReturnValue"`

	// The name of the table to contain the item.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a PutItem operation.

func (PutItemInput) GoString 

func (s PutItemInput) GoString() string

GoString returns the string representation

func (PutItemInput) String 

func (s PutItemInput) String() string

String returns the string representation

func (*PutItemInput) Validate 

func (s *PutItemInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type PutItemOutput 

type PutItemOutput struct {

	// The attribute values as they appeared before the PutItem operation, but only
	// if ReturnValues is specified as ALL_OLD in the request. Each element consists
	// of an attribute name and an attribute value.
	Attributes map[string]*AttributeValue `type:"map"`

	// The capacity units consumed by an operation. The data returned includes the
	// total provisioned throughput consumed, along with statistics for the table
	// and any indexes involved in the operation. ConsumedCapacity is only returned
	// if the request asked for it. For more information, see Provisioned Throughput
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html)
	// in the Amazon DynamoDB Developer Guide.
	ConsumedCapacity *ConsumedCapacity `type:"structure"`

	// Information about item collections, if any, that were affected by the operation.
	// ItemCollectionMetrics is only returned if the request asked for it. If the
	// table does not have any local secondary indexes, this information is not
	// returned in the response.
	//
	// Each ItemCollectionMetrics element consists of:
	//
	//    ItemCollectionKey - The partition key value of the item collection. This
	// is the same as the partition key value of the item itself.
	//
	//    SizeEstimateRange - An estimate of item collection size, in gigabytes.
	// This value is a two-element array containing a lower bound and an upper bound
	// for the estimate. The estimate includes the size of all the items in the
	// table, plus the size of all attributes projected into all of the local secondary
	// indexes on that table. Use this estimate to measure whether a local secondary
	// index is approaching its size limit.
	//
	// The estimate is subject to change over time; therefore, do not rely on the
	// precision or accuracy of the estimate.
	ItemCollectionMetrics *ItemCollectionMetrics `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of a PutItem operation.

func (PutItemOutput) GoString 

func (s PutItemOutput) GoString() string

GoString returns the string representation

func (PutItemOutput) String 

func (s PutItemOutput) String() string

String returns the string representation

type PutRequest 

type PutRequest struct {

	// A map of attribute name to attribute values, representing the primary key
	// of an item to be processed by PutItem. All of the table's primary key attributes
	// must be specified, and their data types must match those of the table's key
	// schema. If any attributes are present in the item which are part of an index
	// key schema for the table, their types must match the index key schema.
	Item map[string]*AttributeValue `type:"map" required:"true"`
	// contains filtered or unexported fields
}

Represents a request to perform a PutItem operation on an item.

func (PutRequest) GoString 

func (s PutRequest) GoString() string

GoString returns the string representation

func (PutRequest) String 

func (s PutRequest) String() string

String returns the string representation

type QueryInput 

type QueryInput struct {

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ProjectionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	// This parameter allows you to retrieve attributes of type List or Map; however,
	// it cannot retrieve individual elements within a List or a Map.
	//
	//  The names of one or more attributes to retrieve. If no attribute names
	// are provided, then all attributes will be returned. If any of the requested
	// attributes are not found, they will not appear in the result.
	//
	// Note that AttributesToGet has no effect on provisioned throughput consumption.
	// DynamoDB determines capacity units consumed based on item size, not on the
	// amount of data that is returned to an application.
	//
	// You cannot use both AttributesToGet and Select together in a Query request,
	// unless the value for Select is SPECIFIC_ATTRIBUTES. (This usage is equivalent
	// to specifying AttributesToGet without any value for Select.)
	//
	// If you query a local secondary index and request only attributes that are
	// projected into that index, the operation will read only the index and not
	// the table. If any of the requested attributes are not projected into the
	// local secondary index, DynamoDB will fetch each of these attributes from
	// the parent table. This extra fetching incurs additional throughput cost and
	// latency.
	//
	// If you query a global secondary index, you can only request attributes that
	// are projected into the index. Global secondary index queries cannot fetch
	// attributes from the parent table.
	AttributesToGet []*string `min:"1" type:"list"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use FilterExpression instead. Do not combine legacy parameters and
	// expression parameters in a single API call; otherwise, DynamoDB will return
	// a ValidationException exception.
	//
	//  A logical operator to apply to the conditions in a QueryFilter map:
	//
	//    AND - If all of the conditions evaluate to true, then the entire map
	// evaluates to true.
	//
	//    OR - If at least one of the conditions evaluate to true, then the entire
	// map evaluates to true.
	//
	//   If you omit ConditionalOperator, then AND is the default.
	//
	// The operation will succeed only if the entire map evaluates to true.
	//
	//  This parameter does not support attributes of type List or Map.
	ConditionalOperator *string `type:"string" enum:"ConditionalOperator"`

	// Determines the read consistency model: If set to true, then the operation
	// uses strongly consistent reads; otherwise, the operation uses eventually
	// consistent reads.
	//
	// Strongly consistent reads are not supported on global secondary indexes.
	// If you query a global secondary index with ConsistentRead set to true, you
	// will receive a ValidationException.
	ConsistentRead *bool `type:"boolean"`

	// The primary key of the first item that this operation will evaluate. Use
	// the value that was returned for LastEvaluatedKey in the previous operation.
	//
	// The data type for ExclusiveStartKey must be String, Number or Binary. No
	// set data types are allowed.
	ExclusiveStartKey map[string]*AttributeValue `type:"map"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// One or more values that can be substituted in an expression.
	//
	// Use the : (colon) character in an expression to dereference an attribute
	// value. For example, suppose that you wanted to check whether the value of
	// the ProductStatus attribute was one of the following:
	//
	//  Available | Backordered | Discontinued
	//
	// You would first need to specify ExpressionAttributeValues as follows:
	//
	//  { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"}
	// }
	//
	// You could then use these values in an expression, such as this:
	//
	//  ProductStatus IN (:avail, :back, :disc)
	//
	// For more information on expression attribute values, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeValues map[string]*AttributeValue `type:"map"`

	// A string that contains conditions that DynamoDB applies after the Query operation,
	// but before the data is returned to you. Items that do not satisfy the FilterExpression
	// criteria are not returned.
	//
	//  A FilterExpression is applied after the items have already been read; the
	// process of filtering does not consume any additional read capacity units.
	//
	//  For more information, see Filter Expressions (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html#FilteringResults)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   FilterExpression replaces the legacy QueryFilter and ConditionalOperator
	// parameters.
	FilterExpression *string `type:"string"`

	// The name of an index to query. This index can be any local secondary index
	// or global secondary index on the table. Note that if you use the IndexName
	// parameter, you must also provide TableName.
	IndexName *string `min:"3" type:"string"`

	// The condition that specifies the key value(s) for items to be retrieved by
	// the Query action.
	//
	// The condition must perform an equality test on a single partition key value.
	// The condition can also perform one of several comparison tests on a single
	// sort key value. Query can use KeyConditionExpression to retrieve one item
	// with a given partition key value and sort key value, or several items that
	// have the same partition key value but different sort key values.
	//
	// The partition key equality test is required, and must be specified in the
	// following format:
	//
	//  partitionKeyName = :partitionkeyval
	//
	// If you also want to provide a condition for the sort key, it must be combined
	// using AND with the condition for the sort key. Following is an example, using
	// the = comparison operator for the sort key:
	//
	//  partitionKeyName = :partitionkeyval AND sortKeyName = :sortkeyval
	//
	// Valid comparisons for the sort key condition are as follows:
	//
	//    sortKeyName = :sortkeyval - true if the sort key value is equal to :sortkeyval.
	//
	//    sortKeyName < :sortkeyval - true if the sort key value is less than :sortkeyval.
	//
	//    sortKeyName <= :sortkeyval - true if the sort key value is less than
	// or equal to :sortkeyval.
	//
	//    sortKeyName > :sortkeyval - true if the sort key value is greater than
	// :sortkeyval.
	//
	//    sortKeyName >=  :sortkeyval - true if the sort key value is greater than
	// or equal to :sortkeyval.
	//
	//    sortKeyName BETWEEN :sortkeyval1 AND :sortkeyval2 - true if the sort
	// key value is greater than or equal to :sortkeyval1, and less than or equal
	// to :sortkeyval2.
	//
	//    begins_with ( sortKeyName, :sortkeyval ) - true if the sort key value
	// begins with a particular operand. (You cannot use this function with a sort
	// key that is of type Number.) Note that the function name begins_with is case-sensitive.
	//
	//   Use the ExpressionAttributeValues parameter to replace tokens such as
	// :partitionval and :sortval with actual values at runtime.
	//
	// You can optionally use the ExpressionAttributeNames parameter to replace
	// the names of the partition key and sort key with placeholder tokens. This
	// option might be necessary if an attribute name conflicts with a DynamoDB
	// reserved word. For example, the following KeyConditionExpression parameter
	// causes an error because Size is a reserved word:
	//
	//   Size = :myval
	//
	//   To work around this, define a placeholder (such a #S) to represent the
	// attribute name Size. KeyConditionExpression then is as follows:
	//
	//   #S = :myval
	//
	//   For a list of reserved words, see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	// For more information on ExpressionAttributeNames and ExpressionAttributeValues,
	// see Using Placeholders for Attribute Names and Values (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ExpressionPlaceholders.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   KeyConditionExpression replaces the legacy KeyConditions parameter.
	KeyConditionExpression *string `type:"string"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use KeyConditionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  The selection criteria for the query. For a query on a table, you can have
	// conditions only on the table primary key attributes. You must provide the
	// partition key name and value as an EQ condition. You can optionally provide
	// a second condition, referring to the sort key.
	//
	//  If you don't provide a sort key condition, all of the items that match
	// the partition key will be retrieved. If a FilterExpression or QueryFilter
	// is present, it will be applied after the items are retrieved.
	//
	//  For a query on an index, you can have conditions only on the index key
	// attributes. You must provide the index partition key name and value as an
	// EQ condition. You can optionally provide a second condition, referring to
	// the index sort key.
	//
	// Each KeyConditions element consists of an attribute name to compare, along
	// with the following:
	//
	//    AttributeValueList - One or more values to evaluate against the supplied
	// attribute. The number of values in the list depends on the ComparisonOperator
	// being used.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For Binary, DynamoDB treats each byte of the binary data as unsigned when
	// it compares binary values.
	//
	//    ComparisonOperator - A comparator for evaluating attributes, for example,
	// equals, greater than, less than, and so on.
	//
	// For KeyConditions, only the following comparison operators are supported:
	//
	//  EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN
	//
	// The following are descriptions of these comparison operators.
	//
	//    EQ : Equal.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one specified in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not equal {"NS":["6", "2", "1"]}.
	//
	//     LE : Less than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     LT : Less than.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GE : Greater than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GT : Greater than.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     BEGINS_WITH : Checks for a prefix.
	//
	//  AttributeValueList can contain only one AttributeValue of type String or
	// Binary (not a Number or a set type). The target attribute of the comparison
	// must be of type String or Binary (not a Number or a set type).
	//
	//     BETWEEN : Greater than or equal to the first value, and less than or
	// equal to the second value.
	//
	//  AttributeValueList must contain two AttributeValue elements of the same
	// type, either String, Number, or Binary (not a set type). A target attribute
	// matches if the target value is greater than, or equal to, the first element
	// and less than, or equal to, the second element. If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also,
	// {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
	//
	//     For usage examples of AttributeValueList and ComparisonOperator, see
	// Legacy Conditional Parameters (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.html)
	// in the Amazon DynamoDB Developer Guide.
	KeyConditions map[string]*Condition `type:"map"`

	// The maximum number of items to evaluate (not necessarily the number of matching
	// items). If DynamoDB processes the number of items up to the limit while processing
	// the results, it stops the operation and returns the matching values up to
	// that point, and a key in LastEvaluatedKey to apply in a subsequent operation,
	// so that you can pick up where you left off. Also, if the processed data set
	// size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation
	// and returns the matching values up to the limit, and a key in LastEvaluatedKey
	// to apply in a subsequent operation to continue the operation. For more information,
	// see Query and Scan (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html)
	// in the Amazon DynamoDB Developer Guide.
	Limit *int64 `min:"1" type:"integer"`

	// A string that identifies one or more attributes to retrieve from the table.
	// These attributes can include scalars, sets, or elements of a JSON document.
	// The attributes in the expression must be separated by commas.
	//
	// If no attribute names are specified, then all attributes will be returned.
	// If any of the requested attributes are not found, they will not appear in
	// the result.
	//
	// For more information, see Accessing Item Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ProjectionExpression replaces the legacy AttributesToGet parameter.
	ProjectionExpression *string `type:"string"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use FilterExpression instead. Do not combine legacy parameters and
	// expression parameters in a single API call; otherwise, DynamoDB will return
	// a ValidationException exception.
	//
	//  A condition that evaluates the query results after the items are read and
	// returns only the desired values.
	//
	// This parameter does not support attributes of type List or Map.
	//
	//  A QueryFilter is applied after the items have already been read; the process
	// of filtering does not consume any additional read capacity units.
	//
	//  If you provide more than one condition in the QueryFilter map, then by
	// default all of the conditions must evaluate to true. In other words, the
	// conditions are ANDed together. (You can use the ConditionalOperator parameter
	// to OR the conditions instead. If you do this, then at least one of the conditions
	// must evaluate to true, rather than all of them.)
	//
	// Note that QueryFilter does not allow key attributes. You cannot define a
	// filter condition on a partition key or a sort key.
	//
	// Each QueryFilter element consists of an attribute name to compare, along
	// with the following:
	//
	//    AttributeValueList - One or more values to evaluate against the supplied
	// attribute. The number of values in the list depends on the operator specified
	// in ComparisonOperator.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For type Binary, DynamoDB treats each byte of the binary data as unsigned
	// when it compares binary values.
	//
	// For information on specifying data types in JSON, see JSON Data Format (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataFormat.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//    ComparisonOperator - A comparator for evaluating attributes. For example,
	// equals, greater than, less than, etc.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// For complete descriptions of all comparison operators, see the Condition
	// (http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_Condition.html)
	// data type.
	QueryFilter map[string]*Condition `type:"map"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// Specifies the order for index traversal: If true (default), the traversal
	// is performed in ascending order; if false, the traversal is performed in
	// descending order.
	//
	// Items with the same partition key value are stored in sorted order by sort
	// key. If the sort key data type is Number, the results are stored in numeric
	// order. For type String, the results are stored in order of ASCII character
	// code values. For type Binary, DynamoDB treats each byte of the binary data
	// as unsigned.
	//
	// If ScanIndexForward is true, DynamoDB returns the results in the order in
	// which they are stored (by sort key value). This is the default behavior.
	// If ScanIndexForward is false, DynamoDB reads the results in reverse order
	// by sort key value, and then returns the results to the client.
	ScanIndexForward *bool `type:"boolean"`

	// The attributes to be returned in the result. You can retrieve all item attributes,
	// specific item attributes, the count of matching items, or in the case of
	// an index, some or all of the attributes projected into the index.
	//
	//    ALL_ATTRIBUTES - Returns all of the item attributes from the specified
	// table or index. If you query a local secondary index, then for each matching
	// item in the index DynamoDB will fetch the entire item from the parent table.
	// If the index is configured to project all item attributes, then all of the
	// data can be obtained from the local secondary index, and no fetching is required.
	//
	//    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves
	// all attributes that have been projected into the index. If the index is configured
	// to project all attributes, this return value is equivalent to specifying
	// ALL_ATTRIBUTES.
	//
	//    COUNT - Returns the number of matching items, rather than the matching
	// items themselves.
	//
	//    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
	// This return value is equivalent to specifying AttributesToGet without specifying
	// any value for Select.
	//
	// If you query a local secondary index and request only attributes that are
	// projected into that index, the operation will read only the index and not
	// the table. If any of the requested attributes are not projected into the
	// local secondary index, DynamoDB will fetch each of these attributes from
	// the parent table. This extra fetching incurs additional throughput cost and
	// latency.
	//
	// If you query a global secondary index, you can only request attributes that
	// are projected into the index. Global secondary index queries cannot fetch
	// attributes from the parent table.
	//
	//   If neither Select nor AttributesToGet are specified, DynamoDB defaults
	// to ALL_ATTRIBUTES when accessing a table, and ALL_PROJECTED_ATTRIBUTES when
	// accessing an index. You cannot use both Select and AttributesToGet together
	// in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES.
	// (This usage is equivalent to specifying AttributesToGet without any value
	// for Select.)
	//
	//  If you use the ProjectionExpression parameter, then the value for Select
	// can only be SPECIFIC_ATTRIBUTES. Any other value for Select will return an
	// error.
	Select *string `type:"string" enum:"Select"`

	// The name of the table containing the requested items.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of a Query operation.

func (QueryInput) GoString 

func (s QueryInput) GoString() string

GoString returns the string representation

func (QueryInput) String 

func (s QueryInput) String() string

String returns the string representation

func (*QueryInput) Validate 

func (s *QueryInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type QueryOutput 

type QueryOutput struct {

	// The capacity units consumed by an operation. The data returned includes the
	// total provisioned throughput consumed, along with statistics for the table
	// and any indexes involved in the operation. ConsumedCapacity is only returned
	// if the request asked for it. For more information, see Provisioned Throughput
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html)
	// in the Amazon DynamoDB Developer Guide.
	ConsumedCapacity *ConsumedCapacity `type:"structure"`

	// The number of items in the response.
	//
	// If you used a QueryFilter in the request, then Count is the number of items
	// returned after the filter was applied, and ScannedCount is the number of
	// matching items before the filter was applied.
	//
	// If you did not use a filter in the request, then Count and ScannedCount
	// are the same.
	Count *int64 `type:"integer"`

	// An array of item attributes that match the query criteria. Each element in
	// this array consists of an attribute name and the value for that attribute.
	Items []map[string]*AttributeValue `type:"list"`

	// The primary key of the item where the operation stopped, inclusive of the
	// previous result set. Use this value to start a new operation, excluding this
	// value in the new request.
	//
	// If LastEvaluatedKey is empty, then the "last page" of results has been processed
	// and there is no more data to be retrieved.
	//
	// If LastEvaluatedKey is not empty, it does not necessarily mean that there
	// is more data in the result set. The only way to know when you have reached
	// the end of the result set is when LastEvaluatedKey is empty.
	LastEvaluatedKey map[string]*AttributeValue `type:"map"`

	// The number of items evaluated, before any QueryFilter is applied. A high
	// ScannedCount value with few, or no, Count results indicates an inefficient
	// Query operation. For more information, see Count and ScannedCount (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html#Count)
	// in the Amazon DynamoDB Developer Guide.
	//
	// If you did not use a filter in the request, then ScannedCount is the same
	// as Count.
	ScannedCount *int64 `type:"integer"`
	// contains filtered or unexported fields
}

Represents the output of a Query operation.

func (QueryOutput) GoString 

func (s QueryOutput) GoString() string

GoString returns the string representation

func (QueryOutput) String 

func (s QueryOutput) String() string

String returns the string representation

type ScanInput 

type ScanInput struct {

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ProjectionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	// This parameter allows you to retrieve attributes of type List or Map; however,
	// it cannot retrieve individual elements within a List or a Map.
	//
	//  The names of one or more attributes to retrieve. If no attribute names
	// are provided, then all attributes will be returned. If any of the requested
	// attributes are not found, they will not appear in the result.
	//
	// Note that AttributesToGet has no effect on provisioned throughput consumption.
	// DynamoDB determines capacity units consumed based on item size, not on the
	// amount of data that is returned to an application.
	AttributesToGet []*string `min:"1" type:"list"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use FilterExpression instead. Do not combine legacy parameters and
	// expression parameters in a single API call; otherwise, DynamoDB will return
	// a ValidationException exception.
	//
	//  A logical operator to apply to the conditions in a ScanFilter map:
	//
	//    AND - If all of the conditions evaluate to true, then the entire map
	// evaluates to true.
	//
	//    OR - If at least one of the conditions evaluate to true, then the entire
	// map evaluates to true.
	//
	//   If you omit ConditionalOperator, then AND is the default.
	//
	// The operation will succeed only if the entire map evaluates to true.
	//
	//  This parameter does not support attributes of type List or Map.
	ConditionalOperator *string `type:"string" enum:"ConditionalOperator"`

	// A Boolean value that determines the read consistency model during the scan:
	//
	//   If ConsistentRead is false, then the data returned from Scan might not
	// contain the results from other recently completed write operations (PutItem,
	// UpdateItem or DeleteItem).
	//
	//   If ConsistentRead is true, then all of the write operations that completed
	// before the Scan began are guaranteed to be contained in the Scan response.
	//
	//   The default setting for ConsistentRead is false.
	//
	// The ConsistentRead parameter is not supported on global secondary indexes.
	// If you scan a global secondary index with ConsistentRead set to true, you
	// will receive a ValidationException.
	ConsistentRead *bool `type:"boolean"`

	// The primary key of the first item that this operation will evaluate. Use
	// the value that was returned for LastEvaluatedKey in the previous operation.
	//
	// The data type for ExclusiveStartKey must be String, Number or Binary. No
	// set data types are allowed.
	//
	// In a parallel scan, a Scan request that includes ExclusiveStartKey must
	// specify the same segment whose previous Scan returned the corresponding value
	// of LastEvaluatedKey.
	ExclusiveStartKey map[string]*AttributeValue `type:"map"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// One or more values that can be substituted in an expression.
	//
	// Use the : (colon) character in an expression to dereference an attribute
	// value. For example, suppose that you wanted to check whether the value of
	// the ProductStatus attribute was one of the following:
	//
	//  Available | Backordered | Discontinued
	//
	// You would first need to specify ExpressionAttributeValues as follows:
	//
	//  { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"}
	// }
	//
	// You could then use these values in an expression, such as this:
	//
	//  ProductStatus IN (:avail, :back, :disc)
	//
	// For more information on expression attribute values, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeValues map[string]*AttributeValue `type:"map"`

	// A string that contains conditions that DynamoDB applies after the Scan operation,
	// but before the data is returned to you. Items that do not satisfy the FilterExpression
	// criteria are not returned.
	//
	//  A FilterExpression is applied after the items have already been read; the
	// process of filtering does not consume any additional read capacity units.
	//
	//  For more information, see Filter Expressions (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html#FilteringResults)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   FilterExpression replaces the legacy ScanFilter and ConditionalOperator
	// parameters.
	FilterExpression *string `type:"string"`

	// The name of a secondary index to scan. This index can be any local secondary
	// index or global secondary index. Note that if you use the IndexName parameter,
	// you must also provide TableName.
	IndexName *string `min:"3" type:"string"`

	// The maximum number of items to evaluate (not necessarily the number of matching
	// items). If DynamoDB processes the number of items up to the limit while processing
	// the results, it stops the operation and returns the matching values up to
	// that point, and a key in LastEvaluatedKey to apply in a subsequent operation,
	// so that you can pick up where you left off. Also, if the processed data set
	// size exceeds 1 MB before DynamoDB reaches this limit, it stops the operation
	// and returns the matching values up to the limit, and a key in LastEvaluatedKey
	// to apply in a subsequent operation to continue the operation. For more information,
	// see Query and Scan (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html)
	// in the Amazon DynamoDB Developer Guide.
	Limit *int64 `min:"1" type:"integer"`

	// A string that identifies one or more attributes to retrieve from the specified
	// table or index. These attributes can include scalars, sets, or elements of
	// a JSON document. The attributes in the expression must be separated by commas.
	//
	// If no attribute names are specified, then all attributes will be returned.
	// If any of the requested attributes are not found, they will not appear in
	// the result.
	//
	// For more information, see Accessing Item Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ProjectionExpression replaces the legacy AttributesToGet parameter.
	ProjectionExpression *string `type:"string"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use FilterExpression instead. Do not combine legacy parameters and
	// expression parameters in a single API call; otherwise, DynamoDB will return
	// a ValidationException exception.
	//
	//  A condition that evaluates the scan results and returns only the desired
	// values.
	//
	//  This parameter does not support attributes of type List or Map.
	//
	//  If you specify more than one condition in the ScanFilter map, then by default
	// all of the conditions must evaluate to true. In other words, the conditions
	// are ANDed together. (You can use the ConditionalOperator parameter to OR
	// the conditions instead. If you do this, then at least one of the conditions
	// must evaluate to true, rather than all of them.)
	//
	// Each ScanFilter element consists of an attribute name to compare, along
	// with the following:
	//
	//    AttributeValueList - One or more values to evaluate against the supplied
	// attribute. The number of values in the list depends on the operator specified
	// in ComparisonOperator .
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For Binary, DynamoDB treats each byte of the binary data as unsigned when
	// it compares binary values.
	//
	// For information on specifying data types in JSON, see JSON Data Format (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataFormat.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//    ComparisonOperator - A comparator for evaluating attributes. For example,
	// equals, greater than, less than, etc.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// For complete descriptions of all comparison operators, see Condition (http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_Condition.html).
	ScanFilter map[string]*Condition `type:"map"`

	// For a parallel Scan request, Segment identifies an individual segment to
	// be scanned by an application worker.
	//
	// Segment IDs are zero-based, so the first segment is always 0. For example,
	// if you want to use four application threads to scan a table or an index,
	// then the first thread specifies a Segment value of 0, the second thread specifies
	// 1, and so on.
	//
	// The value of LastEvaluatedKey returned from a parallel Scan request must
	// be used as ExclusiveStartKey with the same segment ID in a subsequent Scan
	// operation.
	//
	// The value for Segment must be greater than or equal to 0, and less than
	// the value provided for TotalSegments.
	//
	// If you provide Segment, you must also provide TotalSegments.
	Segment *int64 `type:"integer"`

	// The attributes to be returned in the result. You can retrieve all item attributes,
	// specific item attributes, or the count of matching items.
	//
	//    ALL_ATTRIBUTES - Returns all of the item attributes.
	//
	//    ALL_PROJECTED_ATTRIBUTES - Allowed only when querying an index. Retrieves
	// all attributes that have been projected into the index. If the index is configured
	// to project all attributes, this return value is equivalent to specifying
	// ALL_ATTRIBUTES.
	//
	//    COUNT - Returns the number of matching items, rather than the matching
	// items themselves.
	//
	//    SPECIFIC_ATTRIBUTES - Returns only the attributes listed in AttributesToGet.
	// This return value is equivalent to specifying AttributesToGet without specifying
	// any value for Select.
	//
	//   If neither Select nor AttributesToGet are specified, DynamoDB defaults
	// to ALL_ATTRIBUTES. You cannot use both AttributesToGet and Select together
	// in a single request, unless the value for Select is SPECIFIC_ATTRIBUTES.
	// (This usage is equivalent to specifying AttributesToGet without any value
	// for Select.)
	Select *string `type:"string" enum:"Select"`

	// The name of the table containing the requested items; or, if you provide
	// IndexName, the name of the table to which that index belongs.
	TableName *string `min:"3" type:"string" required:"true"`

	// For a parallel Scan request, TotalSegments represents the total number of
	// segments into which the Scan operation will be divided. The value of TotalSegments
	// corresponds to the number of application workers that will perform the parallel
	// scan. For example, if you want to use four application threads to scan a
	// table or an index, specify a TotalSegments value of 4.
	//
	// The value for TotalSegments must be greater than or equal to 1, and less
	// than or equal to 1000000. If you specify a TotalSegments value of 1, the
	// Scan operation will be sequential rather than parallel.
	//
	// If you specify TotalSegments, you must also specify Segment.
	TotalSegments *int64 `min:"1" type:"integer"`
	// contains filtered or unexported fields
}

Represents the input of a Scan operation.

func (ScanInput) GoString 

func (s ScanInput) GoString() string

GoString returns the string representation

func (ScanInput) String 

func (s ScanInput) String() string

String returns the string representation

func (*ScanInput) Validate 

func (s *ScanInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type ScanOutput 

type ScanOutput struct {

	// The capacity units consumed by an operation. The data returned includes the
	// total provisioned throughput consumed, along with statistics for the table
	// and any indexes involved in the operation. ConsumedCapacity is only returned
	// if the request asked for it. For more information, see Provisioned Throughput
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html)
	// in the Amazon DynamoDB Developer Guide.
	ConsumedCapacity *ConsumedCapacity `type:"structure"`

	// The number of items in the response.
	//
	// If you set ScanFilter in the request, then Count is the number of items
	// returned after the filter was applied, and ScannedCount is the number of
	// matching items before the filter was applied.
	//
	// If you did not use a filter in the request, then Count is the same as ScannedCount.
	Count *int64 `type:"integer"`

	// An array of item attributes that match the scan criteria. Each element in
	// this array consists of an attribute name and the value for that attribute.
	Items []map[string]*AttributeValue `type:"list"`

	// The primary key of the item where the operation stopped, inclusive of the
	// previous result set. Use this value to start a new operation, excluding this
	// value in the new request.
	//
	// If LastEvaluatedKey is empty, then the "last page" of results has been processed
	// and there is no more data to be retrieved.
	//
	// If LastEvaluatedKey is not empty, it does not necessarily mean that there
	// is more data in the result set. The only way to know when you have reached
	// the end of the result set is when LastEvaluatedKey is empty.
	LastEvaluatedKey map[string]*AttributeValue `type:"map"`

	// The number of items evaluated, before any ScanFilter is applied. A high ScannedCount
	// value with few, or no, Count results indicates an inefficient Scan operation.
	// For more information, see Count and ScannedCount (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/QueryAndScan.html#Count)
	// in the Amazon DynamoDB Developer Guide.
	//
	// If you did not use a filter in the request, then ScannedCount is the same
	// as Count.
	ScannedCount *int64 `type:"integer"`
	// contains filtered or unexported fields
}

Represents the output of a Scan operation.

func (ScanOutput) GoString 

func (s ScanOutput) GoString() string

GoString returns the string representation

func (ScanOutput) String 

func (s ScanOutput) String() string

String returns the string representation

type StreamSpecification 

type StreamSpecification struct {

	// Indicates whether DynamoDB Streams is enabled (true) or disabled (false)
	// on the table.
	StreamEnabled *bool `type:"boolean"`

	// The DynamoDB Streams settings for the table. These settings consist of:
	//
	//    StreamEnabled - Indicates whether DynamoDB Streams is enabled (true)
	// or disabled (false) on the table.
	//
	//    StreamViewType - When an item in the table is modified, StreamViewType
	// determines what information is written to the stream for this table. Valid
	// values for StreamViewType are:
	//
	//    KEYS_ONLY - Only the key attributes of the modified item are written
	// to the stream.
	//
	//    NEW_IMAGE - The entire item, as it appears after it was modified, is
	// written to the stream.
	//
	//    OLD_IMAGE - The entire item, as it appeared before it was modified, is
	// written to the stream.
	//
	//    NEW_AND_OLD_IMAGES - Both the new and the old item images of the item
	// are written to the stream.
	StreamViewType *string `type:"string" enum:"StreamViewType"`
	// contains filtered or unexported fields
}

Represents the DynamoDB Streams configuration for a table in DynamoDB.

func (StreamSpecification) GoString 

func (s StreamSpecification) GoString() string

GoString returns the string representation

func (StreamSpecification) String 

func (s StreamSpecification) String() string

String returns the string representation

type TableDescription 

type TableDescription struct {

	// An array of AttributeDefinition objects. Each of these objects describes
	// one attribute in the table and index key schema.
	//
	// Each AttributeDefinition object in this array is composed of:
	//
	//    AttributeName - The name of the attribute.
	//
	//    AttributeType - The data type for the attribute.
	AttributeDefinitions []*AttributeDefinition `type:"list"`

	// The date and time when the table was created, in UNIX epoch time (http://www.epochconverter.com/)
	// format.
	CreationDateTime *time.Time `type:"timestamp" timestampFormat:"unix"`

	// The global secondary indexes, if any, on the table. Each index is scoped
	// to a given partition key value. Each element is composed of:
	//
	//    Backfilling - If true, then the index is currently in the backfilling
	// phase. Backfilling occurs only when a new global secondary index is added
	// to the table; it is the process by which DynamoDB populates the new index
	// with data from the table. (This attribute does not appear for indexes that
	// were created during a CreateTable operation.)
	//
	//    IndexName - The name of the global secondary index.
	//
	//    IndexSizeBytes - The total size of the global secondary index, in bytes.
	// DynamoDB updates this value approximately every six hours. Recent changes
	// might not be reflected in this value.
	//
	//    IndexStatus - The current status of the global secondary index:
	//
	//    CREATING - The index is being created.
	//
	//    UPDATING - The index is being updated.
	//
	//    DELETING - The index is being deleted.
	//
	//    ACTIVE - The index is ready for use.
	//
	//      ItemCount - The number of items in the global secondary index. DynamoDB
	// updates this value approximately every six hours. Recent changes might not
	// be reflected in this value.
	//
	//    KeySchema - Specifies the complete index key schema. The attribute names
	// in the key schema must be between 1 and 255 characters (inclusive). The key
	// schema must begin with the same partition key as the table.
	//
	//    Projection - Specifies attributes that are copied (projected) from the
	// table into the index. These are in addition to the primary key attributes
	// and index key attributes, which are automatically projected. Each attribute
	// specification is composed of:
	//
	//    ProjectionType - One of the following:
	//
	//    KEYS_ONLY - Only the index and primary keys are projected into the index.
	//
	//    INCLUDE - Only the specified table attributes are projected into the
	// index. The list of projected attributes are in NonKeyAttributes.
	//
	//    ALL - All of the table attributes are projected into the index.
	//
	//      NonKeyAttributes - A list of one or more non-key attribute names that
	// are projected into the secondary index. The total count of attributes provided
	// in NonKeyAttributes, summed across all of the secondary indexes, must not
	// exceed 20. If you project the same attribute into two different indexes,
	// this counts as two distinct attributes when determining the total.
	//
	//      ProvisionedThroughput - The provisioned throughput settings for the
	// global secondary index, consisting of read and write capacity units, along
	// with data about increases and decreases.
	//
	//   If the table is in the DELETING state, no information about indexes will
	// be returned.
	GlobalSecondaryIndexes []*GlobalSecondaryIndexDescription `type:"list"`

	// The number of items in the specified table. DynamoDB updates this value approximately
	// every six hours. Recent changes might not be reflected in this value.
	ItemCount *int64 `type:"long"`

	// The primary key structure for the table. Each KeySchemaElement consists of:
	//
	//    AttributeName - The name of the attribute.
	//
	//    KeyType - The role of the attribute:
	//
	//    HASH - partition key
	//
	//    RANGE - sort key
	//
	//    The partition key of an item is also known as its hash attribute. The
	// term "hash attribute" derives from DynamoDB' usage of an internal hash function
	// to evenly distribute data items across partitions, based on their partition
	// key values.
	//
	// The sort key of an item is also known as its range attribute. The term "range
	// attribute" derives from the way DynamoDB stores items with the same partition
	// key physically close together, in sorted order by the sort key value.
	//
	//    For more information about primary keys, see Primary Key (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html#DataModelPrimaryKey)
	// in the Amazon DynamoDB Developer Guide.
	KeySchema []*KeySchemaElement `min:"1" type:"list"`

	// The Amazon Resource Name (ARN) that uniquely identifies the latest stream
	// for this table.
	LatestStreamArn *string `min:"37" type:"string"`

	// A timestamp, in ISO 8601 format, for this stream.
	//
	// Note that LatestStreamLabel is not a unique identifier for the stream, because
	// it is possible that a stream from another table might have the same timestamp.
	// However, the combination of the following three elements is guaranteed to
	// be unique:
	//
	//   the AWS customer ID.
	//
	//   the table name.
	//
	//   the StreamLabel.
	LatestStreamLabel *string `type:"string"`

	// Represents one or more local secondary indexes on the table. Each index is
	// scoped to a given partition key value. Tables with one or more local secondary
	// indexes are subject to an item collection size limit, where the amount of
	// data within a given item collection cannot exceed 10 GB. Each element is
	// composed of:
	//
	//    IndexName - The name of the local secondary index.
	//
	//    KeySchema - Specifies the complete index key schema. The attribute names
	// in the key schema must be between 1 and 255 characters (inclusive). The key
	// schema must begin with the same partition key as the table.
	//
	//    Projection - Specifies attributes that are copied (projected) from the
	// table into the index. These are in addition to the primary key attributes
	// and index key attributes, which are automatically projected. Each attribute
	// specification is composed of:
	//
	//    ProjectionType - One of the following:
	//
	//    KEYS_ONLY - Only the index and primary keys are projected into the index.
	//
	//    INCLUDE - Only the specified table attributes are projected into the
	// index. The list of projected attributes are in NonKeyAttributes.
	//
	//    ALL - All of the table attributes are projected into the index.
	//
	//      NonKeyAttributes - A list of one or more non-key attribute names that
	// are projected into the secondary index. The total count of attributes provided
	// in NonKeyAttributes, summed across all of the secondary indexes, must not
	// exceed 20. If you project the same attribute into two different indexes,
	// this counts as two distinct attributes when determining the total.
	//
	//      IndexSizeBytes - Represents the total size of the index, in bytes.
	// DynamoDB updates this value approximately every six hours. Recent changes
	// might not be reflected in this value.
	//
	//    ItemCount - Represents the number of items in the index. DynamoDB updates
	// this value approximately every six hours. Recent changes might not be reflected
	// in this value.
	//
	//   If the table is in the DELETING state, no information about indexes will
	// be returned.
	LocalSecondaryIndexes []*LocalSecondaryIndexDescription `type:"list"`

	// The provisioned throughput settings for the table, consisting of read and
	// write capacity units, along with data about increases and decreases.
	ProvisionedThroughput *ProvisionedThroughputDescription `type:"structure"`

	// The current DynamoDB Streams configuration for the table.
	StreamSpecification *StreamSpecification `type:"structure"`

	// The Amazon Resource Name (ARN) that uniquely identifies the table.
	TableArn *string `type:"string"`

	// The name of the table.
	TableName *string `min:"3" type:"string"`

	// The total size of the specified table, in bytes. DynamoDB updates this value
	// approximately every six hours. Recent changes might not be reflected in this
	// value.
	TableSizeBytes *int64 `type:"long"`

	// The current state of the table:
	//
	//    CREATING - The table is being created.
	//
	//    UPDATING - The table is being updated.
	//
	//    DELETING - The table is being deleted.
	//
	//    ACTIVE - The table is ready for use.
	TableStatus *string `type:"string" enum:"TableStatus"`
	// contains filtered or unexported fields
}

Represents the properties of a table.

func (TableDescription) GoString 

func (s TableDescription) GoString() string

GoString returns the string representation

func (TableDescription) String 

func (s TableDescription) String() string

String returns the string representation

type UpdateGlobalSecondaryIndexAction 

type UpdateGlobalSecondaryIndexAction struct {

	// The name of the global secondary index to be updated.
	IndexName *string `min:"3" type:"string" required:"true"`

	// Represents the provisioned throughput settings for a specified table or index.
	// The settings can be modified using the UpdateTable operation.
	//
	// For current minimum and maximum provisioned throughput values, see Limits
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html)
	// in the Amazon DynamoDB Developer Guide.
	ProvisionedThroughput *ProvisionedThroughput `type:"structure" required:"true"`
	// contains filtered or unexported fields
}

Represents the new provisioned throughput settings to be applied to a global secondary index.

func (UpdateGlobalSecondaryIndexAction) GoString 

func (s UpdateGlobalSecondaryIndexAction) GoString() string

GoString returns the string representation

func (UpdateGlobalSecondaryIndexAction) String 

func (s UpdateGlobalSecondaryIndexAction) String() string

String returns the string representation

func (*UpdateGlobalSecondaryIndexAction) Validate 

func (s *UpdateGlobalSecondaryIndexAction) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type UpdateItemInput 

type UpdateItemInput struct {

	// This is a legacy parameter, for backward compatibility. New applications
	// should use UpdateExpression instead. Do not combine legacy parameters and
	// expression parameters in a single API call; otherwise, DynamoDB will return
	// a ValidationException exception.
	//
	// This parameter can be used for modifying top-level attributes; however,
	// it does not support individual list or map elements.
	//
	//  The names of attributes to be modified, the action to perform on each,
	// and the new value for each. If you are updating an attribute that is an index
	// key attribute for any indexes on that table, the attribute type must match
	// the index key type defined in the AttributesDefinition of the table description.
	// You can use UpdateItem to update any non-key attributes.
	//
	// Attribute values cannot be null. String and Binary type attributes must
	// have lengths greater than zero. Set type attributes must not be empty. Requests
	// with empty values will be rejected with a ValidationException exception.
	//
	// Each AttributeUpdates element consists of an attribute name to modify, along
	// with the following:
	//
	//    Value - The new value, if applicable, for this attribute.
	//
	//    Action - A value that specifies how to perform the update. This action
	// is only valid for an existing attribute whose data type is Number or is a
	// set; do not use ADD for other data types.
	//
	// If an item with the specified primary key is found in the table, the following
	// values perform the following actions:
	//
	//    PUT - Adds the specified attribute to the item. If the attribute already
	// exists, it is replaced by the new value.
	//
	//    DELETE - Removes the attribute and its value, if no value is specified
	// for DELETE. The data type of the specified value must match the existing
	// value's data type.
	//
	// If a set of values is specified, then those values are subtracted from the
	// old set. For example, if the attribute value was the set [a,b,c] and the
	// DELETE action specifies [a,c], then the final attribute value is [b]. Specifying
	// an empty set is an error.
	//
	//    ADD - Adds the specified value to the item, if the attribute does not
	// already exist. If the attribute does exist, then the behavior of ADD depends
	// on the data type of the attribute:
	//
	//   If the existing attribute is a number, and if Value is also a number,
	// then Value is mathematically added to the existing attribute. If Value is
	// a negative number, then it is subtracted from the existing attribute.
	//
	//  If you use ADD to increment or decrement a number value for an item that
	// doesn't exist before the update, DynamoDB uses 0 as the initial value.
	//
	// Similarly, if you use ADD for an existing item to increment or decrement
	// an attribute value that doesn't exist before the update, DynamoDB uses 0
	// as the initial value. For example, suppose that the item you want to update
	// doesn't have an attribute named itemcount, but you decide to ADD the number
	// 3 to this attribute anyway. DynamoDB will create the itemcount attribute,
	// set its initial value to 0, and finally add 3 to it. The result will be a
	// new itemcount attribute, with a value of 3.
	//
	//    If the existing data type is a set, and if Value is also a set, then
	// Value is appended to the existing set. For example, if the attribute value
	// is the set [1,2], and the ADD action specified [3], then the final attribute
	// value is [1,2,3]. An error occurs if an ADD action is specified for a set
	// attribute and the attribute type specified does not match the existing set
	// type.
	//
	// Both sets must have the same primitive data type. For example, if the existing
	// data type is a set of strings, Value must also be a set of strings.
	//
	//     If no item with the specified key is found in the table, the following
	// values perform the following actions:
	//
	//    PUT - Causes DynamoDB to create a new item with the specified primary
	// key, and then adds the attribute.
	//
	//    DELETE - Nothing happens, because attributes cannot be deleted from a
	// nonexistent item. The operation succeeds, but DynamoDB does not create a
	// new item.
	//
	//    ADD - Causes DynamoDB to create an item with the supplied primary key
	// and number (or set of numbers) for the attribute value. The only data types
	// allowed are Number and Number Set.
	//
	//     If you provide any attributes that are part of an index key, then the
	// data types for those attributes must match those of the schema in the table's
	// attribute definition.
	AttributeUpdates map[string]*AttributeValueUpdate `type:"map"`

	// A condition that must be satisfied in order for a conditional update to succeed.
	//
	// An expression can contain any of the following:
	//
	//   Functions: attribute_exists | attribute_not_exists | attribute_type |
	// contains | begins_with | size
	//
	// These function names are case-sensitive.
	//
	//   Comparison operators:  = | &#x3C;&#x3E; | &#x3C; | &#x3E; | &#x3C;= |
	// &#x3E;= | BETWEEN | IN
	//
	//    Logical operators: AND | OR | NOT
	//
	//   For more information on condition expressions, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   ConditionExpression replaces the legacy ConditionalOperator and Expected
	// parameters.
	ConditionExpression *string `type:"string"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use ConditionExpression instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  A logical operator to apply to the conditions in the Expected map:
	//
	//    AND - If all of the conditions evaluate to true, then the entire map
	// evaluates to true.
	//
	//    OR - If at least one of the conditions evaluate to true, then the entire
	// map evaluates to true.
	//
	//   If you omit ConditionalOperator, then AND is the default.
	//
	// The operation will succeed only if the entire map evaluates to true.
	//
	//  This parameter does not support attributes of type List or Map.
	ConditionalOperator *string `type:"string" enum:"ConditionalOperator"`

	// This is a legacy parameter, for backward compatibility. New applications
	// should use  ConditionExpression  instead. Do not combine legacy parameters
	// and expression parameters in a single API call; otherwise, DynamoDB will
	// return a ValidationException exception.
	//
	//  A map of attribute/condition pairs. Expected provides a conditional block
	// for the UpdateItem operation.
	//
	// Each element of Expected consists of an attribute name, a comparison operator,
	// and one or more values. DynamoDB compares the attribute with the value(s)
	// you supplied, using the comparison operator. For each Expected element, the
	// result of the evaluation is either true or false.
	//
	// If you specify more than one element in the Expected map, then by default
	// all of the conditions must evaluate to true. In other words, the conditions
	// are ANDed together. (You can use the ConditionalOperator parameter to OR
	// the conditions instead. If you do this, then at least one of the conditions
	// must evaluate to true, rather than all of them.)
	//
	// If the Expected map evaluates to true, then the conditional operation succeeds;
	// otherwise, it fails.
	//
	//  Expected contains the following:
	//
	//    AttributeValueList - One or more values to evaluate against the supplied
	// attribute. The number of values in the list depends on the ComparisonOperator
	// being used.
	//
	// For type Number, value comparisons are numeric.
	//
	// String value comparisons for greater than, equals, or less than are based
	// on ASCII character code values. For example, a is greater than A, and a is
	// greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
	// (http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters).
	//
	// For type Binary, DynamoDB treats each byte of the binary data as unsigned
	// when it compares binary values.
	//
	//    ComparisonOperator - A comparator for evaluating attributes in the AttributeValueList.
	// When performing the comparison, DynamoDB uses strongly consistent reads.
	//
	// The following comparison operators are available:
	//
	//  EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS
	// | BEGINS_WITH | IN | BETWEEN
	//
	// The following are descriptions of each comparison operator.
	//
	//    EQ : Equal. EQ is supported for all datatypes, including lists and maps.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, Binary, String Set, Number Set, or Binary Set. If an item
	// contains an AttributeValue element of a different type than the one provided
	// in the request, the value does not match. For example, {"S":"6"} does not
	// equal {"N":"6"}. Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     NE : Not equal. NE is supported for all datatypes, including lists and
	// maps.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, Binary, String Set, Number Set, or Binary Set. If an item contains
	// an AttributeValue of a different type than the one provided in the request,
	// the value does not match. For example, {"S":"6"} does not equal {"N":"6"}.
	// Also, {"N":"6"} does not equal {"NS":["6", "2", "1"]}.
	//
	//     LE : Less than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     LT : Less than.
	//
	//  AttributeValueList can contain only one AttributeValue of type String,
	// Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GE : Greater than or equal.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     GT : Greater than.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not equal {"N":"6"}. Also, {"N":"6"}
	// does not compare to {"NS":["6", "2", "1"]}.
	//
	//     NOT_NULL : The attribute exists. NOT_NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the existence of an attribute, not its data type.
	// If the data type of attribute "a" is null, and you evaluate it using NOT_NULL,
	// the result is a Boolean true. This result is because the attribute "a" exists;
	// its data type is not relevant to the NOT_NULL comparison operator.
	//
	//     NULL : The attribute does not exist. NULL is supported for all datatypes,
	// including lists and maps.
	//
	//  This operator tests for the nonexistence of an attribute, not its data
	// type. If the data type of attribute "a" is null, and you evaluate it using
	// NULL, the result is a Boolean false. This is because the attribute "a" exists;
	// its data type is not relevant to the NULL comparison operator.
	//
	//     CONTAINS : Checks for a subsequence, or value in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is of type String, then the operator checks for a substring match.
	// If the target attribute of the comparison is of type Binary, then the operator
	// looks for a subsequence of the target that matches the input. If the target
	// attribute of the comparison is a set ("SS", "NS", or "BS"), then the operator
	// evaluates to true if it finds an exact match with any member of the set.
	//
	// CONTAINS is supported for lists: When evaluating "a CONTAINS b", "a" can
	// be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    NOT_CONTAINS : Checks for absence of a subsequence, or absence of a value
	// in a set.
	//
	//  AttributeValueList can contain only one AttributeValue element of type
	// String, Number, or Binary (not a set type). If the target attribute of the
	// comparison is a String, then the operator checks for the absence of a substring
	// match. If the target attribute of the comparison is Binary, then the operator
	// checks for the absence of a subsequence of the target that matches the input.
	// If the target attribute of the comparison is a set ("SS", "NS", or "BS"),
	// then the operator evaluates to true if it does not find an exact match with
	// any member of the set.
	//
	// NOT_CONTAINS is supported for lists: When evaluating "a NOT CONTAINS b",
	// "a" can be a list; however, "b" cannot be a set, a map, or a list.
	//
	//    BEGINS_WITH : Checks for a prefix.
	//
	//  AttributeValueList can contain only one AttributeValue of type String or
	// Binary (not a Number or a set type). The target attribute of the comparison
	// must be of type String or Binary (not a Number or a set type).
	//
	//     IN : Checks for matching elements within two sets.
	//
	//  AttributeValueList can contain one or more AttributeValue elements of type
	// String, Number, or Binary (not a set type). These attributes are compared
	// against an existing set type attribute of an item. If any elements of the
	// input set are present in the item attribute, the expression evaluates to
	// true.
	//
	//    BETWEEN : Greater than or equal to the first value, and less than or
	// equal to the second value.
	//
	//  AttributeValueList must contain two AttributeValue elements of the same
	// type, either String, Number, or Binary (not a set type). A target attribute
	// matches if the target value is greater than, or equal to, the first element
	// and less than, or equal to, the second element. If an item contains an AttributeValue
	// element of a different type than the one provided in the request, the value
	// does not match. For example, {"S":"6"} does not compare to {"N":"6"}. Also,
	// {"N":"6"} does not compare to {"NS":["6", "2", "1"]}
	//
	//     For usage examples of AttributeValueList and ComparisonOperator, see
	// Legacy Conditional Parameters (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LegacyConditionalParameters.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	// For backward compatibility with previous DynamoDB releases, the following
	// parameters can be used instead of AttributeValueList and ComparisonOperator:
	//
	//    Value - A value for DynamoDB to compare with an attribute.
	//
	//    Exists - A Boolean value that causes DynamoDB to evaluate the value before
	// attempting the conditional operation:
	//
	//   If Exists is true, DynamoDB will check to see if that attribute value
	// already exists in the table. If it is found, then the condition evaluates
	// to true; otherwise the condition evaluate to false.
	//
	//   If Exists is false, DynamoDB assumes that the attribute value does not
	// exist in the table. If in fact the value does not exist, then the assumption
	// is valid and the condition evaluates to true. If the value is found, despite
	// the assumption that it does not exist, the condition evaluates to false.
	//
	//   Note that the default value for Exists is true.
	//
	//   The Value and Exists parameters are incompatible with AttributeValueList
	// and ComparisonOperator. Note that if you use both sets of parameters at once,
	// DynamoDB will return a ValidationException exception.
	//
	//  This parameter does not support attributes of type List or Map.
	Expected map[string]*ExpectedAttributeValue `type:"map"`

	// One or more substitution tokens for attribute names in an expression. The
	// following are some use cases for using ExpressionAttributeNames:
	//
	//   To access an attribute whose name conflicts with a DynamoDB reserved word.
	//
	//   To create a placeholder for repeating occurrences of an attribute name
	// in an expression.
	//
	//   To prevent special characters in an attribute name from being misinterpreted
	// in an expression.
	//
	//   Use the # character in an expression to dereference an attribute name.
	// For example, consider the following attribute name:
	//
	//    Percentile
	//
	//   The name of this attribute conflicts with a reserved word, so it cannot
	// be used directly in an expression. (For the complete list of reserved words,
	// see Reserved Words (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ReservedWords.html)
	// in the Amazon DynamoDB Developer Guide). To work around this, you could specify
	// the following for ExpressionAttributeNames:
	//
	//    {"#P":"Percentile"}
	//
	//   You could then use this substitution in an expression, as in this example:
	//
	//    #P = :val
	//
	//    Tokens that begin with the : character are expression attribute values,
	// which are placeholders for the actual value at runtime.
	//
	//  For more information on expression attribute names, see Accessing Item
	// Attributes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.AccessingItemAttributes.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeNames map[string]*string `type:"map"`

	// One or more values that can be substituted in an expression.
	//
	// Use the : (colon) character in an expression to dereference an attribute
	// value. For example, suppose that you wanted to check whether the value of
	// the ProductStatus attribute was one of the following:
	//
	//  Available | Backordered | Discontinued
	//
	// You would first need to specify ExpressionAttributeValues as follows:
	//
	//  { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"}
	// }
	//
	// You could then use these values in an expression, such as this:
	//
	//  ProductStatus IN (:avail, :back, :disc)
	//
	// For more information on expression attribute values, see Specifying Conditions
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html)
	// in the Amazon DynamoDB Developer Guide.
	ExpressionAttributeValues map[string]*AttributeValue `type:"map"`

	// The primary key of the item to be updated. Each element consists of an attribute
	// name and a value for that attribute.
	//
	// For the primary key, you must provide all of the attributes. For example,
	// with a simple primary key, you only need to provide a value for the partition
	// key. For a composite primary key, you must provide values for both the partition
	// key and the sort key.
	Key map[string]*AttributeValue `type:"map" required:"true"`

	// Determines the level of detail about provisioned throughput consumption that
	// is returned in the response:
	//
	//    INDEXES - The response includes the aggregate ConsumedCapacity for the
	// operation, together with ConsumedCapacity for each table and secondary index
	// that was accessed.
	//
	// Note that some operations, such as GetItem and BatchGetItem, do not access
	// any indexes at all. In these cases, specifying INDEXES will only return ConsumedCapacity
	// information for table(s).
	//
	//    TOTAL - The response includes only the aggregate ConsumedCapacity for
	// the operation.
	//
	//    NONE - No ConsumedCapacity details are included in the response.
	ReturnConsumedCapacity *string `type:"string" enum:"ReturnConsumedCapacity"`

	// Determines whether item collection metrics are returned. If set to SIZE,
	// the response includes statistics about item collections, if any, that were
	// modified during the operation are returned in the response. If set to NONE
	// (the default), no statistics are returned.
	ReturnItemCollectionMetrics *string `type:"string" enum:"ReturnItemCollectionMetrics"`

	// Use ReturnValues if you want to get the item attributes as they appeared
	// either before or after they were updated. For UpdateItem, the valid values
	// are:
	//
	//    NONE - If ReturnValues is not specified, or if its value is NONE, then
	// nothing is returned. (This setting is the default for ReturnValues.)
	//
	//    ALL_OLD - If UpdateItem overwrote an attribute name-value pair, then
	// the content of the old item is returned.
	//
	//    UPDATED_OLD - The old versions of only the updated attributes are returned.
	//
	//    ALL_NEW - All of the attributes of the new version of the item are returned.
	//
	//    UPDATED_NEW - The new versions of only the updated attributes are returned.
	//
	//   There is no additional cost associated with requesting a return value
	// aside from the small network and processing overhead of receiving a larger
	// response. No Read Capacity Units are consumed.
	//
	// Values returned are strongly consistent
	ReturnValues *string `type:"string" enum:"ReturnValue"`

	// The name of the table containing the item to update.
	TableName *string `min:"3" type:"string" required:"true"`

	// An expression that defines one or more attributes to be updated, the action
	// to be performed on them, and new value(s) for them.
	//
	// The following action values are available for UpdateExpression.
	//
	//    SET - Adds one or more attributes and values to an item. If any of these
	// attribute already exist, they are replaced by the new values. You can also
	// use SET to add or subtract from an attribute that is of type Number. For
	// example: SET myNum = myNum + :val
	//
	//  SET supports the following functions:
	//
	//    if_not_exists (path, operand) - if the item does not contain an attribute
	// at the specified path, then if_not_exists evaluates to operand; otherwise,
	// it evaluates to path. You can use this function to avoid overwriting an attribute
	// that may already be present in the item.
	//
	//    list_append (operand, operand) - evaluates to a list with a new element
	// added to it. You can append the new element to the start or the end of the
	// list by reversing the order of the operands.
	//
	//   These function names are case-sensitive.
	//
	//    REMOVE - Removes one or more attributes from an item.
	//
	//    ADD - Adds the specified value to the item, if the attribute does not
	// already exist. If the attribute does exist, then the behavior of ADD depends
	// on the data type of the attribute:
	//
	//   If the existing attribute is a number, and if Value is also a number,
	// then Value is mathematically added to the existing attribute. If Value is
	// a negative number, then it is subtracted from the existing attribute.
	//
	//  If you use ADD to increment or decrement a number value for an item that
	// doesn't exist before the update, DynamoDB uses 0 as the initial value.
	//
	// Similarly, if you use ADD for an existing item to increment or decrement
	// an attribute value that doesn't exist before the update, DynamoDB uses 0
	// as the initial value. For example, suppose that the item you want to update
	// doesn't have an attribute named itemcount, but you decide to ADD the number
	// 3 to this attribute anyway. DynamoDB will create the itemcount attribute,
	// set its initial value to 0, and finally add 3 to it. The result will be a
	// new itemcount attribute in the item, with a value of 3.
	//
	//    If the existing data type is a set and if Value is also a set, then Value
	// is added to the existing set. For example, if the attribute value is the
	// set [1,2], and the ADD action specified [3], then the final attribute value
	// is [1,2,3]. An error occurs if an ADD action is specified for a set attribute
	// and the attribute type specified does not match the existing set type.
	//
	// Both sets must have the same primitive data type. For example, if the existing
	// data type is a set of strings, the Value must also be a set of strings.
	//
	//    The ADD action only supports Number and set data types. In addition,
	// ADD can only be used on top-level attributes, not nested attributes.
	//
	//     DELETE - Deletes an element from a set.
	//
	// If a set of values is specified, then those values are subtracted from the
	// old set. For example, if the attribute value was the set [a,b,c] and the
	// DELETE action specifies [a,c], then the final attribute value is [b]. Specifying
	// an empty set is an error.
	//
	//  The DELETE action only supports set data types. In addition, DELETE can
	// only be used on top-level attributes, not nested attributes.
	//
	//    You can have many actions in a single expression, such as the following:
	// SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
	//
	// For more information on update expressions, see Modifying Items and Attributes
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.Modifying.html)
	// in the Amazon DynamoDB Developer Guide.
	//
	//   UpdateExpression replaces the legacy AttributeUpdates parameter.
	UpdateExpression *string `type:"string"`
	// contains filtered or unexported fields
}

Represents the input of an UpdateItem operation.

func (UpdateItemInput) GoString 

func (s UpdateItemInput) GoString() string

GoString returns the string representation

func (UpdateItemInput) String 

func (s UpdateItemInput) String() string

String returns the string representation

func (*UpdateItemInput) Validate 

func (s *UpdateItemInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type UpdateItemOutput 

type UpdateItemOutput struct {

	// A map of attribute values as they appeared before the UpdateItem operation.
	// This map only appears if ReturnValues was specified as something other than
	// NONE in the request. Each element represents one attribute.
	Attributes map[string]*AttributeValue `type:"map"`

	// The capacity units consumed by an operation. The data returned includes the
	// total provisioned throughput consumed, along with statistics for the table
	// and any indexes involved in the operation. ConsumedCapacity is only returned
	// if the request asked for it. For more information, see Provisioned Throughput
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputIntro.html)
	// in the Amazon DynamoDB Developer Guide.
	ConsumedCapacity *ConsumedCapacity `type:"structure"`

	// Information about item collections, if any, that were affected by the operation.
	// ItemCollectionMetrics is only returned if the request asked for it. If the
	// table does not have any local secondary indexes, this information is not
	// returned in the response.
	ItemCollectionMetrics *ItemCollectionMetrics `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of an UpdateItem operation.

func (UpdateItemOutput) GoString 

func (s UpdateItemOutput) GoString() string

GoString returns the string representation

func (UpdateItemOutput) String 

func (s UpdateItemOutput) String() string

String returns the string representation

type UpdateTableInput 

type UpdateTableInput struct {

	// An array of attributes that describe the key schema for the table and indexes.
	// If you are adding a new global secondary index to the table, AttributeDefinitions
	// must include the key element(s) of the new index.
	AttributeDefinitions []*AttributeDefinition `type:"list"`

	// An array of one or more global secondary indexes for the table. For each
	// index in the array, you can request one action:
	//
	//    Create - add a new global secondary index to the table.
	//
	//    Update - modify the provisioned throughput settings of an existing global
	// secondary index.
	//
	//    Delete - remove a global secondary index from the table.
	//
	//   For more information, see Managing Global Secondary Indexes (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GSI.OnlineOps.html)
	// in the Amazon DynamoDB Developer Guide.
	GlobalSecondaryIndexUpdates []*GlobalSecondaryIndexUpdate `type:"list"`

	// Represents the provisioned throughput settings for a specified table or index.
	// The settings can be modified using the UpdateTable operation.
	//
	// For current minimum and maximum provisioned throughput values, see Limits
	// (http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html)
	// in the Amazon DynamoDB Developer Guide.
	ProvisionedThroughput *ProvisionedThroughput `type:"structure"`

	// Represents the DynamoDB Streams configuration for the table.
	//
	//  You will receive a ResourceInUseException if you attempt to enable a stream
	// on a table that already has a stream, or if you attempt to disable a stream
	// on a table which does not have a stream.
	StreamSpecification *StreamSpecification `type:"structure"`

	// The name of the table to be updated.
	TableName *string `min:"3" type:"string" required:"true"`
	// contains filtered or unexported fields
}

Represents the input of an UpdateTable operation.

func (UpdateTableInput) GoString 

func (s UpdateTableInput) GoString() string

GoString returns the string representation

func (UpdateTableInput) String 

func (s UpdateTableInput) String() string

String returns the string representation

func (*UpdateTableInput) Validate 

func (s *UpdateTableInput) Validate() error

Validate inspects the fields of the type to determine if they are valid.

type UpdateTableOutput 

type UpdateTableOutput struct {

	// Represents the properties of a table.
	TableDescription *TableDescription `type:"structure"`
	// contains filtered or unexported fields
}

Represents the output of an UpdateTable operation.

func (UpdateTableOutput) GoString 

func (s UpdateTableOutput) GoString() string

GoString returns the string representation

func (UpdateTableOutput) String 

func (s UpdateTableOutput) String() string

String returns the string representation

type WriteRequest 

type WriteRequest struct {

	// A request to perform a DeleteItem operation.
	DeleteRequest *DeleteRequest `type:"structure"`

	// A request to perform a PutItem operation.
	PutRequest *PutRequest `type:"structure"`
	// contains filtered or unexported fields
}

Represents an operation to perform - either DeleteItem or PutItem. You can only request one of these operations, not both, in a single WriteRequest. If you do need to perform both of these operations, you will need to provide two separate WriteRequest objects.

func (WriteRequest) GoString 

func (s WriteRequest) GoString() string

GoString returns the string representation

func (WriteRequest) String 

func (s WriteRequest) String() string

String returns the string representation

Source Files

View all Source files

Directories

Path Synopsis
Package dynamodbattribute provides marshaling utilities for marshaling to dynamodb.AttributeValue types and unmarshaling to Go value types.
 Package dynamodbattribute provides marshaling utilities for marshaling to dynamodb.AttributeValue types and unmarshaling to Go value types.
Package dynamodbiface provides an interface to enable mocking the Amazon DynamoDB service client for testing your code.
 Package dynamodbiface provides an interface to enable mocking the Amazon DynamoDB service client for testing your code.

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