core

package
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 Go to latest Published: Jul 12, 2024 License: Apache-2.0 Imports: 9 Imported by: 0

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Index

Constants

View Source 
const (
	BaseTypeBool        = "bool"       //
	BaseTypeDecimal     = "decimal"    //
	BaseTypeID          = "id"         // non-keyed mutex
	BaseTypeIDSet       = "idset"      // non-keyed set
	BaseTypeIDSetQ      = "idsetq"     // non-keyed set timequantum
	BaseTypeInt         = "int"        //
	BaseTypeString      = "string"     // keyed mutex
	BaseTypeStringSet   = "stringset"  // keyed set
	BaseTypeStringSetQ  = "stringsetq" // keyed set timequantum
	BaseTypeTimestamp   = "timestamp"  //
	PrimaryKeyFieldName = FieldName("_id")
)
View Source 
const (
	TimeUnitSeconds      = "s"
	TimeUnitMilliseconds = "ms"
	TimeUnitMicroseconds = "µs"
	TimeUnitUSeconds     = "us"
	TimeUnitNanoseconds  = "ns"
)

Constants related to timestamp.

Variables

This section is empty.

Functions

func CheckEpochOutOfRange 

func CheckEpochOutOfRange(epoch, min, max time.Time) error

CheckEpochOutOfRange checks if the epoch is after max or before min

func IsValidTimeUnit 

func IsValidTimeUnit(unit string) bool

IsValidTimeUnit returns true if unit is valid.

func TimeUnitNanos 

func TimeUnitNanos(unit string) int64

TimeUnitNanos returns the number of nanoseconds in unit.

func TimestampToVal 

func TimestampToVal(unit string, ts time.Time) int64

TimestampToVal takes a time unit and a time.Time and converts it to an integer value

func ValToTimestamp 

func ValToTimestamp(unit string, val int64) (time.Time, error)

ValToTimestamp takes a timeunit and an integer value and converts it to time.Time

Types

type BaseType 

type BaseType string

BaseType is a typed string used for field types.

type DistinctTimestamp 

type DistinctTimestamp struct {
	Values []string
	Name   string
}

func (DistinctTimestamp) ToRows 

func (d DistinctTimestamp) ToRows(callback func(*proto.RowResponse) error) error

ToRows implements the ToRowser interface.

func (DistinctTimestamp) ToTable 

func (d DistinctTimestamp) ToTable() (*proto.TableResponse, error)

ToTable implements the ToTabler interface for DistinctTimestamp

func (*DistinctTimestamp) Union 

func (d *DistinctTimestamp) Union(other DistinctTimestamp) DistinctTimestamp

Union returns the union of the values of `d` and `other`

type ExtractedIDColumn 

type ExtractedIDColumn struct {
	ColumnID uint64
	Rows     [][]uint64
}

type ExtractedIDMatrix 

type ExtractedIDMatrix struct {
	Fields  []string
	Columns []ExtractedIDColumn
}

func (*ExtractedIDMatrix) Append 

func (e *ExtractedIDMatrix) Append(m ExtractedIDMatrix)

type ExtractedTable 

type ExtractedTable struct {
	Fields  []ExtractedTableField  `json:"fields"`
	Columns []ExtractedTableColumn `json:"columns"`
}

func (ExtractedTable) ToRows 

func (t ExtractedTable) ToRows(callback func(*proto.RowResponse) error) error

ToRows implements the ToRowser interface.

func (ExtractedTable) ToTable 

func (t ExtractedTable) ToTable() (*proto.TableResponse, error)

ToTable converts the table to protobuf format.

type ExtractedTableColumn 

type ExtractedTableColumn struct {
	Column KeyOrID       `json:"column"`
	Rows   []interface{} `json:"rows"`
}

type ExtractedTableField 

type ExtractedTableField struct {
	Name string `json:"name"`
	Type string `json:"type"`
}

type Field 

type Field struct {
	Name    FieldName    `json:"name"`
	Type    BaseType     `json:"type"`
	Options FieldOptions `json:"options"`
}

Field represents a field and its configuration.

func (*Field) IsPrimaryKey 

func (f *Field) IsPrimaryKey() bool

IsPrimaryKey returns true if the field is the primary key field (of either type ID or STRING).

type FieldName 

type FieldName string

FieldName is a typed string used for field names.

type FieldOptions 

type FieldOptions struct {
	Min            pql.Decimal         `json:"min,omitempty"`
	Max            pql.Decimal         `json:"max,omitempty"`
	Scale          int64               `json:"scale,omitempty"`
	NoStandardView bool                `json:"no-standard-view,omitempty"` // TODO: we should remove this
	CacheType      string              `json:"cache-type,omitempty"`
	CacheSize      uint32              `json:"cache-size,omitempty"`
	TimeUnit       string              `json:"time-unit,omitempty"`
	Epoch          time.Time           `json:"epoch,omitempty"`
	TimeQuantum    quantum.TimeQuantum `json:"time-quantum,omitempty"`
	TTL            time.Duration       `json:"ttl,omitempty"`
	ForeignIndex   string              `json:"foreign-index,omitempty"`
	TrackExistence bool                `json:"track-existence"`
}

FieldOptions represents options to set when initializing a field.

type FieldRow 

type FieldRow struct {
	Field  Field  `json:"field"`
	RowID  uint64 `json:"rowID"`
	RowKey string `json:"rowKey,omitempty"`
	Value  *int64 `json:"value,omitempty"`
}

FieldRow is used to distinguish rows in a group by result.

func (*FieldRow) Clone 

func (fr *FieldRow) Clone() (clone *FieldRow)

func (FieldRow) MarshalJSON 

func (fr FieldRow) MarshalJSON() ([]byte, error)

MarshalJSON marshals FieldRow to JSON such that either a Key or an ID is included.

func (FieldRow) String 

func (fr FieldRow) String() string

String is the FieldRow stringer.

type GroupCount 

type GroupCount struct {
	Group      []FieldRow   `json:"group"`
	Count      uint64       `json:"count"`
	Agg        int64        `json:"-"`
	DecimalAgg *pql.Decimal `json:"-"`
}

GroupCount represents a result item for a group by query.

func ApplyConditionToGroupCounts 

func ApplyConditionToGroupCounts(gcs []GroupCount, subj string, cond *pql.Condition) []GroupCount

ApplyConditionToGroupCounts filters the contents of gcs according to the condition. Currently, `count` and `sum` are the only fields supported.

func (*GroupCount) Clone 

func (g *GroupCount) Clone() (r *GroupCount)

func (GroupCount) Compare 

func (g GroupCount) Compare(o GroupCount) int

Compare is used in ordering two GroupCount objects.

type GroupCounts 

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

GroupCounts is a list of GroupCount.

func NewGroupCounts 

func NewGroupCounts(agg string, groups ...GroupCount) *GroupCounts

NewGroupCounts creates a GroupCounts with the given type and slice of GroupCount objects. There's intentionally no externally-accessible way to change the []GroupCount after creation.

func (*GroupCounts) AggregateColumn 

func (g *GroupCounts) AggregateColumn() string

AggregateColumn gives the likely column name to use for aggregates, because for historical reasons we used "sum" when it was a sum, but don't want to use that when it's something else. This will likely get revisited.

func (*GroupCounts) Groups 

func (g *GroupCounts) Groups() []GroupCount

Groups is a convenience method to let us not worry as much about the potentially-nil nature of a *GroupCounts.

func (*GroupCounts) MarshalJSON 

func (g *GroupCounts) MarshalJSON() ([]byte, error)

MarshalJSON makes GroupCounts satisfy interface json.Marshaler and customizes the JSON output of the aggregate field label.

func (*GroupCounts) ToRows 

func (g *GroupCounts) ToRows(callback func(*proto.RowResponse) error) error

ToRows implements the ToRowser interface.

func (*GroupCounts) ToTable 

func (g *GroupCounts) ToTable() (*proto.TableResponse, error)

ToTable implements the ToTabler interface.

type KeyOrID 

type KeyOrID struct {
	ID    uint64
	Key   string
	Keyed bool
}

func (KeyOrID) MarshalJSON 

func (kid KeyOrID) MarshalJSON() ([]byte, error)

type RowIdentifiers 

type RowIdentifiers struct {
	Rows  []uint64 `json:"rows"`
	Keys  []string `json:"keys,omitempty"`
	Field string
}

RowIdentifiers is a return type for a list of row ids or row keys. The names `Rows` and `Keys` are meant to follow the same convention as the Row query which returns `Columns` and `Keys`. TODO: Rename this to something better. Anything.

func (*RowIdentifiers) Clone 

func (r *RowIdentifiers) Clone() (clone *RowIdentifiers)

func (RowIdentifiers) ToRows 

func (r RowIdentifiers) ToRows(callback func(*proto.RowResponse) error) error

ToRows implements the ToRowser interface.

func (RowIdentifiers) ToTable 

func (r RowIdentifiers) ToTable() (*proto.TableResponse, error)

ToTable implements the ToTabler interface.

type SignedRow 

type SignedRow struct {
	Neg   *rows.Row `json:"neg"`
	Pos   *rows.Row `json:"pos"`
	Field string    `json:"-"`
}

SignedRow represents a signed *Row with two (neg/pos) *Rows.

func (*SignedRow) Clone 

func (s *SignedRow) Clone() (r *SignedRow)

func (SignedRow) ToRows 

func (s SignedRow) ToRows(callback func(*proto.RowResponse) error) error

ToRows implements the ToRowser interface.

func (SignedRow) ToTable 

func (s SignedRow) ToTable() (*proto.TableResponse, error)

ToTable implements the ToTabler interface.

func (*SignedRow) Union 

func (sr *SignedRow) Union(other SignedRow) SignedRow

type StringTableKeyer 

type StringTableKeyer string

StringTableKeyer is a helper type which can wrap a string, making it a TableKeyer. This is useful for certain calls to Execute() which take a string index name.

func (StringTableKeyer) Key 

func (s StringTableKeyer) Key() TableKey

type Table 

type Table struct {
	ID         TableID   `json:"id,omitempty"`
	Name       TableName `json:"name,omitempty"`
	Fields     []*Field  `json:"fields"`
	PartitionN int       `json:"partitionN"`

	Description string `json:"description,omitempty"`
	Owner       string `json:"owner,omitempty"`
	UpdatedBy   string `json:"updatedBy,omitempty"`
}

Table represents a table and its configuration.

func (*Table) Field 

func (t *Table) Field(name FieldName) (*Field, bool)

Field returns the field with the provided name. If a field with that name does not exist, the returned boolean will be false.

func (*Table) FieldNames 

func (t *Table) FieldNames() []FieldName

FieldNames returns the list of field names associated with the table.

func (*Table) HasValidPrimaryKey 

func (t *Table) HasValidPrimaryKey() bool

HasValidPrimaryKey returns false if the table does not contain a primary key field (which is required), or if the primary key field is not a valid type.

func (*Table) Key 

func (t *Table) Key() TableKey

func (*Table) StringKeys 

func (t *Table) StringKeys() bool

StringKeys returns true if the table's primary key is either a string or a concatenation of fields.

type TableID 

type TableID string

type TableKey 

type TableKey string

TableKey is a globally unique identifier for a table; it is effectively the compound key: (org, database, table). This is (hopefully) the value that will be used when interfacing with services which are unaware of table qualifiers. For example, the FeatureBase server has no notion of organization or database; its top level type is index/indexName/table. So in this case, until and unless we introduce table qualifiers into FeatureBase, we will use TableKey as the value for index.Name.

func (TableKey) Key 

func (tk TableKey) Key() TableKey

type TableKeyer 

type TableKeyer interface {
	Key() TableKey
}

TableKeyer is an interface implemented by any type which can produce, and be represented by, a TableKey. In the case of a QualifiedTable, its TableKey might be something like `tbl__org__db__tableid`, while a general pilosa implemenation might represent a table as a basic table name `foo`.

type TableName 

type TableName string

type ValCount 

type ValCount struct {
	Val          int64        `json:"value"`
	FloatVal     float64      `json:"floatValue"`
	DecimalVal   *pql.Decimal `json:"decimalValue"`
	TimestampVal time.Time    `json:"timestampValue"`
	Count        int64        `json:"count"`
}

ValCount represents a grouping of sum & count for Sum() and Average() calls. Also Min, Max....

func (*ValCount) Add 

func (vc *ValCount) Add(other ValCount) ValCount

func (*ValCount) Clone 

func (v *ValCount) Clone() (r *ValCount)

func (*ValCount) Larger 

func (vc *ValCount) Larger(other ValCount) ValCount

larger returns the larger of the two ValCounts.

func (*ValCount) Smaller 

func (vc *ValCount) Smaller(other ValCount) ValCount

smaller returns the smaller of the two ValCounts.

func (ValCount) ToRows 

func (v ValCount) ToRows(callback func(*proto.RowResponse) error) error

ToRows implements the ToRowser interface.

func (ValCount) ToTable 

func (v ValCount) ToTable() (*proto.TableResponse, error)

ToTable implements the ToTabler interface.

Source Files

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