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Index ¶
- Constants
- func CutIndexKey(key kv.Key, colIDs []int64) (values map[int64][]byte, b []byte, err error)
- func CutIndexKeyNew(key kv.Key, length int) (values [][]byte, b []byte, err error)
- func CutIndexPrefix(key kv.Key) []byte
- func CutRowKeyPrefix(key kv.Key) []byte
- func CutRowNew(data []byte, colIDs map[int64]int) ([][]byte, error)
- func DecodeColumnValue(data []byte, ft *types.FieldType, loc *time.Location) (types.Datum, error)
- func DecodeIndexKey(key kv.Key) (tableID int64, indexID int64, indexValues []string, err error)
- func DecodeKeyHead(key kv.Key) (tableID int64, indexID int64, isRecordKey bool, err error)
- func DecodeRecordKey(key kv.Key) (tableID int64, handle int64, err error)
- func DecodeRow(b []byte, cols map[int64]*types.FieldType, loc *time.Location) (map[int64]types.Datum, error)
- func DecodeRowKey(key kv.Key) (int64, error)
- func DecodeRowWithMap(b []byte, cols map[int64]*types.FieldType, loc *time.Location, ...) (map[int64]types.Datum, error)
- func DecodeTableID(key kv.Key) int64
- func EncodeIndexSeekKey(tableID int64, idxID int64, encodedValue []byte) kv.Key
- func EncodeRecordKey(recordPrefix kv.Key, h int64) kv.Key
- func EncodeRow(sc *stmtctx.StatementContext, row []types.Datum, colIDs []int64, valBuf []byte, ...) ([]byte, error)
- func EncodeRowKey(tableID int64, encodedHandle []byte) kv.Key
- func EncodeRowKeyWithHandle(tableID int64, handle int64) kv.Key
- func EncodeTableIndexPrefix(tableID, idxID int64) kv.Key
- func EncodeTablePrefix(tableID int64) kv.Key
- func EncodeValue(sc *stmtctx.StatementContext, raw types.Datum) ([]byte, error)
- func GenTableIndexPrefix(tableID int64) kv.Key
- func GenTablePrefix(tableID int64) kv.Key
- func GenTableRecordPrefix(tableID int64) kv.Key
- func GetTableHandleKeyRange(tableID int64) (startKey, endKey []byte)
- func GetTableIndexKeyRange(tableID, indexID int64) (startKey, endKey []byte)
- func ReplaceRecordKeyTableID(buf []byte, tableID int64) []byte
- func TablePrefix() []byte
- func TruncateToRowKeyLen(key kv.Key) kv.Key
- func UnflattenDatums(datums []types.Datum, fts []*types.FieldType, loc *time.Location) ([]types.Datum, error)
Constants ¶
const TableSplitKeyLen = 1 + idLen
TableSplitKeyLen is the length of key 't{table_id}' which is used for table split.
Variables ¶
This section is empty.
Functions ¶
func CutIndexKey ¶
CutIndexKey cuts encoded index key into colIDs to bytes slices map. The returned value b is the remaining bytes of the key which would be empty if it is unique index or handle data if it is non-unique index.
func CutIndexKeyNew ¶
CutIndexKeyNew cuts encoded index key into colIDs to bytes slices. The returned value b is the remaining bytes of the key which would be empty if it is unique index or handle data if it is non-unique index.
func CutRowKeyPrefix ¶
CutRowKeyPrefix cuts the row key prefix.
func CutRowNew ¶
CutRowNew cuts encoded row into byte slices and return columns' byte slice. Row layout: colID1, value1, colID2, value2, .....
func DecodeColumnValue ¶
DecodeColumnValue decodes data to a Datum according to the column info.
func DecodeIndexKey ¶
DecodeIndexKey decodes the key and gets the tableID, indexID, indexValues.
func DecodeKeyHead ¶
DecodeKeyHead decodes the key's head and gets the tableID, indexID. isRecordKey is true when is a record key.
func DecodeRecordKey ¶
DecodeRecordKey decodes the key and gets the tableID, handle.
func DecodeRow ¶
func DecodeRow(b []byte, cols map[int64]*types.FieldType, loc *time.Location) (map[int64]types.Datum, error)
DecodeRow decodes a byte slice into datums. Row layout: colID1, value1, colID2, value2, .....
func DecodeRowKey ¶
DecodeRowKey decodes the key and gets the handle.
func DecodeRowWithMap ¶
func DecodeRowWithMap(b []byte, cols map[int64]*types.FieldType, loc *time.Location, row map[int64]types.Datum) (map[int64]types.Datum, error)
DecodeRowWithMap decodes a byte slice into datums with a existing row map. Row layout: colID1, value1, colID2, value2, .....
func DecodeTableID ¶
DecodeTableID decodes the table ID of the key, if the key is not table key, returns 0.
func EncodeIndexSeekKey ¶
EncodeIndexSeekKey encodes an index value to kv.Key.
func EncodeRecordKey ¶
EncodeRecordKey encodes the recordPrefix, row handle into a kv.Key.
func EncodeRow ¶
func EncodeRow(sc *stmtctx.StatementContext, row []types.Datum, colIDs []int64, valBuf []byte, values []types.Datum) ([]byte, error)
EncodeRow encode row data and column ids into a slice of byte. Row layout: colID1, value1, colID2, value2, ..... valBuf and values pass by caller, for reducing EncodeRow allocates temporary bufs. If you pass valBuf and values as nil, EncodeRow will allocate it.
func EncodeRowKey ¶
EncodeRowKey encodes the table id and record handle into a kv.Key
func EncodeRowKeyWithHandle ¶
EncodeRowKeyWithHandle encodes the table id, row handle into a kv.Key
func EncodeTableIndexPrefix ¶
EncodeTableIndexPrefix encodes index prefix with tableID and idxID.
func EncodeTablePrefix ¶
EncodeTablePrefix encodes table prefix with table ID.
func EncodeValue ¶
EncodeValue encodes a go value to bytes.
func GenTableIndexPrefix ¶
GenTableIndexPrefix composes index prefix with tableID: "t[tableID]_i".
func GenTablePrefix ¶
GenTablePrefix composes table record and index prefix: "t[tableID]".
func GenTableRecordPrefix ¶
GenTableRecordPrefix composes record prefix with tableID: "t[tableID]_r".
func GetTableHandleKeyRange ¶
GetTableHandleKeyRange returns table handle's key range with tableID.
func GetTableIndexKeyRange ¶
GetTableIndexKeyRange returns table index's key range with tableID and indexID.
func ReplaceRecordKeyTableID ¶
ReplaceRecordKeyTableID replace the tableID in the recordKey buf.
func TruncateToRowKeyLen ¶
TruncateToRowKeyLen truncates the key to row key length if the key is longer than row key.
Types ¶
This section is empty.
Source Files