Function EncodeOldRow

pkg/tablecodec/tablecodec.go:376–397

EncodeOldRow 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 EncodeOldRow allocates temporary bufs. If you pass valBuf and values as nil, EncodeOldRow will allocate it.

(loc *time.Location, row []types.Datum, colIDs []int64, valBuf []byte, values []types.Datum)

// valBuf and values pass by caller, for reducing EncodeOldRow allocates temporary bufs. If you pass valBuf and values as nil,
// EncodeOldRow will allocate it.
func EncodeOldRow(loc *time.Location, row []types.Datum, colIDs []int64, valBuf []byte, values []types.Datum) ([]byte, error) {
	if len(row) != len(colIDs) {
		return nil, errors.Errorf("EncodeRow error: data and columnID count not match %d vs %d", len(row), len(colIDs))
	}
	valBuf = valBuf[:0]
	if values == nil {
		values = make([]types.Datum, len(row)*2)
	}
	for i, c := range row {
		id := colIDs[i]
		values[2*i].SetInt64(id)
		err := flatten(loc, c, &values[2*i+1])
		if err != nil {
			return valBuf, errors.Trace(err)
		}
	}
	if len(values) == 0 {
		// We could not set nil value into kv.
		return append(valBuf, codec.NilFlag), nil
	}
	return codec.EncodeValue(loc, valBuf, values...)
}

func flatten(loc *time.Location, data types.Datum, ret *types.Datum) error {
	switch data.Kind() {