Method checkPrefixKey

pkg/executor/foreign_key.go:393–406

(ctx context.Context, memBuffer kv.MemBuffer, snap kv.Snapshot, key kv.Key)

}

func (fkc *FKCheckExec) checkPrefixKey(ctx context.Context, memBuffer kv.MemBuffer, snap kv.Snapshot, key kv.Key) error {
	key, value, err := fkc.getIndexKeyValueInTable(ctx, memBuffer, snap, key)
	if err != nil {
		return err
	}
	if fkc.CheckExist {
		return fkc.checkPrefixKeyExist(key, value)
	}
	if len(value) > 0 {
		// If check not exist, but the key is exist, return failedErr.
		return fkc.FailedErr
	}
	return nil
}

func (fkc *FKCheckExec) checkPrefixKeyExist(key kv.Key, value []byte) error {
	exist := len(value) > 0