Function DecodeIndexKey

pkg/tablecodec/tablecodec.go:180–198

DecodeIndexKey decodes the key and gets the tableID, indexID, indexValues.

(key kv.Key)

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

	tableID, indexID, isRecord, err := DecodeKeyHead(key)
	if err != nil {
		return 0, 0, nil, errors.Trace(err)
	}
	if isRecord {
		err = errInvalidIndexKey.GenWithStack("invalid index key - %q", k)
		return 0, 0, nil, err
	}
	indexKey := key[prefixLen+idLen:]
	indexValues, err = DecodeValuesBytesToStrings(indexKey)
	if err != nil {
		err = errInvalidIndexKey.GenWithStack("invalid index key - %q %v", k, err)
		return 0, 0, nil, err
	}
	return tableID, indexID, indexValues, nil
}

// DecodeValuesBytesToStrings decode the raw bytes to strings for each columns.
// FIXME: Without the schema information, we can only decode the raw kind of