value

package
v1.0.0-beta.79 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: May 3, 2023 License: Apache-2.0 Imports: 13 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	INDEX_MAX_STRING_LEN = 64
)
View Source 
const (
	// SmallestNonZeroNormalFloat32 is the smallest positive non-zero floating number. The go package version
	// has the denormalized form which is higher than this.
	SmallestNonZeroNormalFloat32 = 0x1p-126
)

Variables

View Source 
var EmptyCollation = NewCollation()

Functions

func AnyCompare 

func AnyCompare(element any, v Value) int

func SecondaryMaxOrder 

func SecondaryMaxOrder() int

func SecondaryMinOrder 

func SecondaryMinOrder() int

func SecondaryNullOrder 

func SecondaryNullOrder() int

func ToSecondaryOrder 

func ToSecondaryOrder(dataType schema.FieldType, val Value) int

Types

type ArrayValue 

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

func NewArrayValue 

func NewArrayValue(v []byte, decoded []any) *ArrayValue

func (*ArrayValue) AsInterface 

func (a *ArrayValue) AsInterface() any

func (*ArrayValue) CompareTo 

func (a *ArrayValue) CompareTo(v Value) (int, error)

func (*ArrayValue) DataType 

func (a *ArrayValue) DataType() schema.FieldType

func (*ArrayValue) String 

func (a *ArrayValue) String() string

type BoolValue 

type BoolValue bool

func NewBoolValue 

func NewBoolValue(v bool) *BoolValue

func (*BoolValue) AsInterface 

func (b *BoolValue) AsInterface() any

func (*BoolValue) CompareTo 

func (b *BoolValue) CompareTo(v Value) (int, error)

func (*BoolValue) DataType 

func (b *BoolValue) DataType() schema.FieldType

func (*BoolValue) String 

func (b *BoolValue) String() string

type BytesValue 

type BytesValue []byte

func NewBytesValue 

func NewBytesValue(v []byte) *BytesValue

func (*BytesValue) AsInterface 

func (b *BytesValue) AsInterface() any

func (*BytesValue) CompareTo 

func (b *BytesValue) CompareTo(v Value) (int, error)

func (*BytesValue) DataType 

func (b *BytesValue) DataType() schema.FieldType

func (*BytesValue) String 

func (b *BytesValue) String() string

type Collation 

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

func NewCollation 

func NewCollation() *Collation

func NewCollationFrom 

func NewCollationFrom(apiCollation *api.Collation) *Collation

func NewSortKeyCollation 

func NewSortKeyCollation() *Collation

NewSortKeyCollation is used for with the secondary index. We generate a sort key when storing a string in the index and also use it when comparing strings when filtering.

func (*Collation) CompareString 

func (c *Collation) CompareString(a string, b string) int

CompareString returns an integer comparing the two strings. The result will be 0 if a==b, -1 if a < b, and +1 if a > b.

func (*Collation) GenerateSortKey 

func (x *Collation) GenerateSortKey(input string) []byte

func (*Collation) IsCaseInsensitive 

func (x *Collation) IsCaseInsensitive() bool

func (*Collation) IsCaseSensitive 

func (x *Collation) IsCaseSensitive() bool

func (*Collation) IsCollationSortKey 

func (x *Collation) IsCollationSortKey() bool

func (*Collation) IsValid 

func (x *Collation) IsValid() error

type Comparable 

type Comparable interface {
	// CompareTo returns a value indicating the relationship between the receiver and the parameter.
	//
	// Returns a negative integer, zero, or a positive integer as the receiver is less than, equal
	// to, or greater than the parameter i.e. v1.CompareTo(v2) returns -1 if v1 < v2
	CompareTo(v Value) (int, error)
}

type DateTimeValue 

type DateTimeValue struct {
	Value string
}

func NewDateTimeValue 

func NewDateTimeValue(v string) *DateTimeValue

func (*DateTimeValue) AsInterface 

func (d *DateTimeValue) AsInterface() any

func (*DateTimeValue) CompareTo 

func (d *DateTimeValue) CompareTo(v Value) (int, error)

func (*DateTimeValue) DataType 

func (d *DateTimeValue) DataType() schema.FieldType

func (*DateTimeValue) String 

func (d *DateTimeValue) String() string

type DoubleValue 

type DoubleValue struct {
	Double float64

	Float *big.Float
	// contains filtered or unexported fields
}

func NewDoubleUsingFloat 

func NewDoubleUsingFloat(v float64) *DoubleValue

func NewDoubleValue 

func NewDoubleValue(raw string) (*DoubleValue, error)

func (*DoubleValue) AsInterface 

func (d *DoubleValue) AsInterface() any

func (*DoubleValue) CompareTo 

func (d *DoubleValue) CompareTo(v Value) (int, error)

func (*DoubleValue) DataType 

func (d *DoubleValue) DataType() schema.FieldType

func (*DoubleValue) String 

func (d *DoubleValue) String() string

type IntValue 

type IntValue int64

func NewIntValue 

func NewIntValue(v int64) *IntValue

func (*IntValue) AsInterface 

func (i *IntValue) AsInterface() any

func (*IntValue) CompareTo 

func (i *IntValue) CompareTo(v Value) (int, error)

func (*IntValue) DataType 

func (i *IntValue) DataType() schema.FieldType

func (*IntValue) String 

func (i *IntValue) String() string

type MaxValue 

type MaxValue struct{}

func NewMaxValue 

func NewMaxValue() *MaxValue

func (*MaxValue) AsInterface 

func (m *MaxValue) AsInterface() any

func (*MaxValue) CompareTo 

func (m *MaxValue) CompareTo(v Value) (int, error)

func (*MaxValue) DataType 

func (m *MaxValue) DataType() schema.FieldType

func (*MaxValue) String 

func (m *MaxValue) String() string

type NullValue 

type NullValue struct{}

func NewNullValue 

func NewNullValue() *NullValue

func (*NullValue) AsInterface 

func (n *NullValue) AsInterface() any

func (*NullValue) CompareTo 

func (n *NullValue) CompareTo(v Value) (int, error)

func (*NullValue) DataType 

func (n *NullValue) DataType() schema.FieldType

func (*NullValue) String 

func (n *NullValue) String() string

type StringValue 

type StringValue struct {
	Value     string
	Collation *Collation
}

func NewStringValue 

func NewStringValue(v string, collation *Collation) *StringValue

func (*StringValue) AsInterface 

func (s *StringValue) AsInterface() any

func (*StringValue) CompareTo 

func (s *StringValue) CompareTo(v Value) (int, error)

func (*StringValue) DataType 

func (s *StringValue) DataType() schema.FieldType

func (*StringValue) String 

func (s *StringValue) String() string

type Value 

type Value interface {
	fmt.Stringer
	Comparable

	// AsInterface to return the value as interface
	AsInterface() any
	DataType() schema.FieldType
}

Value is our value object that implements comparable so that two values can be compared. This is used to build the keys(primary key or any other index key), or to build the selector filter. Note: if the field data type is byte/binary then the value object returned is base64 decoded. The reason is that JSON has encoded the byte array to base64 so to make sure we are using the user provided value in building the key and the filter we must first decode this field. This allows us later to perform prefix scans.

func MaxOrderValue 

func MaxOrderValue() Value

func MinOrderValue 

func MinOrderValue() Value

func NewValue 

func NewValue(fieldType schema.FieldType, value []byte) (Value, error)

NewValue returns the value of the field from the raw json value. It uses schema to get the type of the field.

func NewValueUsingCollation 

func NewValueUsingCollation(fieldType schema.FieldType, value []byte, collation *Collation) (Value, error)

Source Files

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