tables

package
v2.0.11+incompatible Latest Latest
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 Go to latest Published: Jan 3, 2019 License: Apache-2.0 Imports: 28 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CanSkip 

func CanSkip(info *model.TableInfo, col *table.Column, value types.Datum) bool

CanSkip is for these cases, we can skip the columns in encoded row: 1. the column is included in primary key; 2. the column's default value is null, and the value equals to that; 3. the column is virtual generated.

func CheckHandleExists 

func CheckHandleExists(ctx sessionctx.Context, t table.Table, recordID int64) error

CheckHandleExists check whether recordID key exists. if not exists, return nil, otherwise return kv.ErrKeyExists error.

func DecodeHandle 

func DecodeHandle(data []byte) (int64, error)

DecodeHandle decodes handle in data.

func DecodeRawRowData 

func DecodeRawRowData(ctx sessionctx.Context, meta *model.TableInfo, h int64, cols []*table.Column,
	value []byte) ([]types.Datum, map[int64]types.Datum, error)

DecodeRawRowData decodes raw row data into a datum slice and a (columnID:columnValue) map.

func EncodeHandle 

func EncodeHandle(h int64) []byte

EncodeHandle encodes handle in data.

func FindIndexByColName 

func FindIndexByColName(t table.Table, name string) table.Index

FindIndexByColName implements table.Table FindIndexByColName interface.

func GetColDefaultValue 

func GetColDefaultValue(ctx sessionctx.Context, col *table.Column, defaultVals []types.Datum) (
	colVal types.Datum, err error)

GetColDefaultValue gets a column default value. The defaultVals is used to avoid calculating the default value multiple times.

func MemoryTableFromMeta 

func MemoryTableFromMeta(alloc autoid.Allocator, tblInfo *model.TableInfo) table.Table

MemoryTableFromMeta creates a Table instance from model.TableInfo.

func MockTableFromMeta 

func MockTableFromMeta(tableInfo *model.TableInfo) table.Table

MockTableFromMeta only serves for test.

func NewIndex 

func NewIndex(tableInfo *model.TableInfo, indexInfo *model.IndexInfo) table.Index

NewIndex builds a new Index object.

func TableFromMeta 

func TableFromMeta(alloc autoid.Allocator, tblInfo *model.TableInfo) (table.Table, error)

TableFromMeta creates a Table instance from model.TableInfo.

Types

type MemoryTable 

type MemoryTable struct {
	ID      int64
	Name    model.CIStr
	Columns []*table.Column
	// contains filtered or unexported fields
}

MemoryTable implements table.Table interface.

func (*MemoryTable) AddRecord 

func (t *MemoryTable) AddRecord(ctx sessionctx.Context, r []types.Datum, skipHandleCheck bool, isUpdate ...bool) (recordID int64, err error)

AddRecord implements table.Table AddRecord interface.

func (*MemoryTable) AllocAutoID 

func (t *MemoryTable) AllocAutoID(ctx sessionctx.Context) (int64, error)

AllocAutoID implements table.Table AllocAutoID interface.

func (*MemoryTable) Allocator 

func (t *MemoryTable) Allocator(ctx sessionctx.Context) autoid.Allocator

Allocator implements table.Table Allocator interface.

func (*MemoryTable) Cols 

func (t *MemoryTable) Cols() []*table.Column

Cols implements table.Table Cols interface.

func (*MemoryTable) DeletableIndices 

func (t *MemoryTable) DeletableIndices() []table.Index

DeletableIndices implements table.Table DeletableIndices interface.

func (*MemoryTable) FirstKey 

func (t *MemoryTable) FirstKey() kv.Key

FirstKey implements table.Table FirstKey interface.

func (*MemoryTable) IndexPrefix 

func (t *MemoryTable) IndexPrefix() kv.Key

IndexPrefix implements table.Table IndexPrefix interface.

func (*MemoryTable) Indices 

func (t *MemoryTable) Indices() []table.Index

Indices implements table.Table Indices interface.

func (*MemoryTable) IterRecords 

func (t *MemoryTable) IterRecords(ctx sessionctx.Context, startKey kv.Key, cols []*table.Column,
	fn table.RecordIterFunc) error

IterRecords implements table.Table IterRecords interface.

func (*MemoryTable) Meta 

func (t *MemoryTable) Meta() *model.TableInfo

Meta implements table.Table Meta interface.

func (*MemoryTable) RebaseAutoID 

func (t *MemoryTable) RebaseAutoID(ctx sessionctx.Context, newBase int64, isSetStep bool) error

RebaseAutoID implements table.Table RebaseAutoID interface.

func (*MemoryTable) RecordKey 

func (t *MemoryTable) RecordKey(h int64) kv.Key

RecordKey implements table.Table RecordKey interface.

func (*MemoryTable) RecordPrefix 

func (t *MemoryTable) RecordPrefix() kv.Key

RecordPrefix implements table.Table RecordPrefix interface.

func (*MemoryTable) RemoveRecord 

func (t *MemoryTable) RemoveRecord(ctx sessionctx.Context, h int64, r []types.Datum) error

RemoveRecord implements table.Table RemoveRecord interface.

func (*MemoryTable) Row 

func (t *MemoryTable) Row(ctx sessionctx.Context, h int64) ([]types.Datum, error)

Row implements table.Table Row interface.

func (*MemoryTable) RowWithCols 

func (t *MemoryTable) RowWithCols(ctx sessionctx.Context, h int64, cols []*table.Column) ([]types.Datum, error)

RowWithCols implements table.Table RowWithCols interface.

func (*MemoryTable) Seek 

func (t *MemoryTable) Seek(ctx sessionctx.Context, handle int64) (int64, bool, error)

Seek seeks the handle

func (*MemoryTable) Truncate 

func (t *MemoryTable) Truncate()

Truncate drops all data in Memory Table.

func (*MemoryTable) Type 

func (t *MemoryTable) Type() table.Type

Type implements table.Table Type interface.

func (*MemoryTable) UpdateRecord 

func (t *MemoryTable) UpdateRecord(ctx sessionctx.Context, h int64, oldData, newData []types.Datum, touched []bool) error

UpdateRecord implements table.Table UpdateRecord interface.

func (*MemoryTable) WritableCols 

func (t *MemoryTable) WritableCols() []*table.Column

WritableCols implements table.Table WritableCols interface.

func (*MemoryTable) WritableIndices 

func (t *MemoryTable) WritableIndices() []table.Index

WritableIndices implements table.Table WritableIndices interface.

type Table 

type Table struct {
	ID      int64
	Name    model.CIStr
	Columns []*table.Column
	// contains filtered or unexported fields
}

Table implements table.Table interface.

func (*Table) AddRecord 

func (t *Table) AddRecord(ctx sessionctx.Context, r []types.Datum, skipHandleCheck bool, isUpdates ...bool) (recordID int64, err error)

AddRecord implements table.Table AddRecord interface.

func (*Table) AllocAutoID 

func (t *Table) AllocAutoID(ctx sessionctx.Context) (int64, error)

AllocAutoID implements table.Table AllocAutoID interface.

func (*Table) Allocator 

func (t *Table) Allocator(ctx sessionctx.Context) autoid.Allocator

Allocator implements table.Table Allocator interface.

func (*Table) Cols 

func (t *Table) Cols() []*table.Column

Cols implements table.Table Cols interface.

func (*Table) DeletableIndices 

func (t *Table) DeletableIndices() []table.Index

DeletableIndices implements table.Table DeletableIndices interface.

func (*Table) FirstKey 

func (t *Table) FirstKey() kv.Key

FirstKey implements table.Table FirstKey interface.

func (*Table) IndexPrefix 

func (t *Table) IndexPrefix() kv.Key

IndexPrefix implements table.Table IndexPrefix interface.

func (*Table) Indices 

func (t *Table) Indices() []table.Index

Indices implements table.Table Indices interface.

func (*Table) IterRecords 

func (t *Table) IterRecords(ctx sessionctx.Context, startKey kv.Key, cols []*table.Column,
	fn table.RecordIterFunc) error

IterRecords implements table.Table IterRecords interface.

func (*Table) Meta 

func (t *Table) Meta() *model.TableInfo

Meta implements table.Table Meta interface.

func (*Table) RebaseAutoID 

func (t *Table) RebaseAutoID(ctx sessionctx.Context, newBase int64, isSetStep bool) error

RebaseAutoID implements table.Table RebaseAutoID interface.

func (*Table) RecordKey 

func (t *Table) RecordKey(h int64) kv.Key

RecordKey implements table.Table RecordKey interface.

func (*Table) RecordPrefix 

func (t *Table) RecordPrefix() kv.Key

RecordPrefix implements table.Table RecordPrefix interface.

func (*Table) RemoveRecord 

func (t *Table) RemoveRecord(ctx sessionctx.Context, h int64, r []types.Datum) error

RemoveRecord implements table.Table RemoveRecord interface.

func (*Table) Row 

func (t *Table) Row(ctx sessionctx.Context, h int64) ([]types.Datum, error)

Row implements table.Table Row interface.

func (*Table) RowWithCols 

func (t *Table) RowWithCols(ctx sessionctx.Context, h int64, cols []*table.Column) ([]types.Datum, error)

RowWithCols implements table.Table RowWithCols interface.

func (*Table) Seek 

func (t *Table) Seek(ctx sessionctx.Context, h int64) (int64, bool, error)

Seek implements table.Table Seek interface.

func (*Table) Type 

func (t *Table) Type() table.Type

Type implements table.Table Type interface.

func (*Table) UpdateRecord 

func (t *Table) UpdateRecord(ctx sessionctx.Context, h int64, oldData, newData []types.Datum, touched []bool) error

UpdateRecord implements table.Table UpdateRecord interface. `touched` means which columns are really modified, used for secondary indices. Length of `oldData` and `newData` equals to length of `t.WritableCols()`.

func (*Table) WritableCols 

func (t *Table) WritableCols() []*table.Column

WritableCols implements table WritableCols interface.

func (*Table) WritableIndices 

func (t *Table) WritableIndices() []table.Index

WritableIndices implements table.Table WritableIndices interface.

type VirtualDataSource 

type VirtualDataSource interface {
	// GetRows do the actual job
	GetRows(ctx sessionctx.Context) (fullRows [][]types.Datum, err error)
	// Meta return the meta of table
	Meta() *model.TableInfo
	// Cols return the cols of table
	Cols() []*table.Column
}

VirtualDataSource is used to extract data from the struct in memory.

type VirtualTable 

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

VirtualTable stands for the fake table all its data is in the memory. dataSource: the function to get rows @TODO this table is almost the same as the infoschema tables, but we need to use it in performance schema. @TODO So we have to move it here, sometimes we need to refactor the infoschema tables to decrease the multiplicity of the codes

func CreateVirtualTable 

func CreateVirtualTable(dataSource VirtualDataSource) *VirtualTable

CreateVirtualTable as its name

func (*VirtualTable) AddRecord 

func (vt *VirtualTable) AddRecord(ctx sessionctx.Context, r []types.Datum, skipHandleCheck bool, isUpdate ...bool) (recordID int64, err error)

AddRecord implements table.Table Type interface.

func (*VirtualTable) AllocAutoID 

func (vt *VirtualTable) AllocAutoID(ctx sessionctx.Context) (int64, error)

AllocAutoID implements table.Table Type interface.

func (*VirtualTable) Allocator 

func (vt *VirtualTable) Allocator(ctx sessionctx.Context) autoid.Allocator

Allocator implements table.Table Type interface.

func (*VirtualTable) Cols 

func (vt *VirtualTable) Cols() []*table.Column

Cols implements table.Table Type interface.

func (*VirtualTable) DeletableIndices 

func (vt *VirtualTable) DeletableIndices() []table.Index

DeletableIndices implements table.Table Type interface.

func (*VirtualTable) FirstKey 

func (vt *VirtualTable) FirstKey() kv.Key

FirstKey implements table.Table Type interface.

func (*VirtualTable) IndexPrefix 

func (vt *VirtualTable) IndexPrefix() kv.Key

IndexPrefix implements table.Table Type interface.

func (*VirtualTable) Indices 

func (vt *VirtualTable) Indices() []table.Index

Indices implements table.Table Type interface.

func (*VirtualTable) IterRecords 

func (vt *VirtualTable) IterRecords(ctx sessionctx.Context, startKey kv.Key, cols []*table.Column,
	fn table.RecordIterFunc) error

IterRecords implements table.Table Type interface.

func (*VirtualTable) Meta 

func (vt *VirtualTable) Meta() *model.TableInfo

Meta implements table.Table Type interface.

func (*VirtualTable) RebaseAutoID 

func (vt *VirtualTable) RebaseAutoID(ctx sessionctx.Context, newBase int64, isSetStep bool) error

RebaseAutoID implements table.Table Type interface.

func (*VirtualTable) RecordKey 

func (vt *VirtualTable) RecordKey(h int64) kv.Key

RecordKey implements table.Table Type interface.

func (*VirtualTable) RecordPrefix 

func (vt *VirtualTable) RecordPrefix() kv.Key

RecordPrefix implements table.Table Type interface.

func (*VirtualTable) RemoveRecord 

func (vt *VirtualTable) RemoveRecord(ctx sessionctx.Context, h int64, r []types.Datum) error

RemoveRecord implements table.Table Type interface.

func (*VirtualTable) Row 

func (vt *VirtualTable) Row(ctx sessionctx.Context, h int64) ([]types.Datum, error)

Row implements table.Table Type interface.

func (*VirtualTable) RowWithCols 

func (vt *VirtualTable) RowWithCols(ctx sessionctx.Context, h int64, cols []*table.Column) ([]types.Datum, error)

RowWithCols implements table.Table Type interface.

func (*VirtualTable) Seek 

func (vt *VirtualTable) Seek(ctx sessionctx.Context, h int64) (int64, bool, error)

Seek implements table.Table Type interface.

func (*VirtualTable) Type 

func (vt *VirtualTable) Type() table.Type

Type implements table.Table Type interface.

func (*VirtualTable) UpdateRecord 

func (vt *VirtualTable) UpdateRecord(ctx sessionctx.Context, h int64, oldData, newData []types.Datum, touched []bool) error

UpdateRecord implements table.Table Type interface.

func (*VirtualTable) WritableCols 

func (vt *VirtualTable) WritableCols() []*table.Column

WritableCols implements table.Table Type interface.

func (*VirtualTable) WritableIndices 

func (vt *VirtualTable) WritableIndices() []table.Index

WritableIndices implements table.Table Type interface.

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