Function DecodeRecordKey

pkg/tablecodec/tablecodec.go:143–177

DecodeRecordKey decodes the key and gets the tableID, handle.

(key kv.Key)

// DecodeRecordKey decodes the key and gets the tableID, handle.
func DecodeRecordKey(key kv.Key) (tableID int64, handle kv.Handle, err error) {
	if len(key) <= prefixLen {
		return 0, nil, errInvalidRecordKey.GenWithStack("invalid record key - %q", key)
	}

	k := key
	if !hasTablePrefix(key) {
		return 0, nil, errInvalidRecordKey.GenWithStack("invalid record key - %q", k)
	}

	key = key[tablePrefixLength:]
	key, tableID, err = codec.DecodeInt(key)
	if err != nil {
		return 0, nil, errors.Trace(err)
	}

	if !hasRecordPrefixSep(key) {
		return 0, nil, errInvalidRecordKey.GenWithStack("invalid record key - %q", k)
	}

	key = key[recordPrefixSepLength:]
	if len(key) == 8 {
		var intHandle int64
		key, intHandle, err = codec.DecodeInt(key)
		if err != nil {
			return 0, nil, errors.Trace(err)
		}
		return tableID, kv.IntHandle(intHandle), nil
	}
	h, err := kv.NewCommonHandle(key)
	if err != nil {
		return 0, nil, errInvalidRecordKey.GenWithStack("invalid record key - %q %v", k, err)
	}
	return tableID, h, nil
}

// DecodeIndexKey decodes the key and gets the tableID, indexID, indexValues.
func DecodeIndexKey(key kv.Key) (tableID int64, indexID int64, indexValues []string, err error) {