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48 lines
1.6 KiB
48 lines
1.6 KiB
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package structure
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import (
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mysql "github.com/pingcap/tidb/errno"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/util/dbterror"
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)
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var (
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// ErrInvalidHashKeyFlag used by structure
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ErrInvalidHashKeyFlag = dbterror.ClassStructure.NewStd(mysql.ErrInvalidHashKeyFlag)
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// ErrInvalidListIndex used by structure
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ErrInvalidListIndex = dbterror.ClassStructure.NewStd(mysql.ErrInvalidListIndex)
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// ErrInvalidListMetaData used by structure
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ErrInvalidListMetaData = dbterror.ClassStructure.NewStd(mysql.ErrInvalidListMetaData)
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// ErrWriteOnSnapshot used by structure
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ErrWriteOnSnapshot = dbterror.ClassStructure.NewStd(mysql.ErrWriteOnSnapshot)
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)
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// NewStructure creates a TxStructure with Retriever, RetrieverMutator and key prefix.
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func NewStructure(reader kv.Retriever, readWriter kv.RetrieverMutator, prefix []byte) *TxStructure {
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return &TxStructure{
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reader: reader,
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readWriter: readWriter,
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prefix: prefix,
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}
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}
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// TxStructure supports some simple data structures like string, hash, list, etc... and
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// you can use these in a transaction.
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type TxStructure struct {
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reader kv.Retriever
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readWriter kv.RetrieverMutator
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prefix []byte
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}
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