Files
tidb/plan/cache/value.go
Jun-Seok Heo 0306bb0070 tidb: support a plan cache for prepared statements (#3956)
* tidb: support a plan cache for prepared statements
2017-10-24 00:55:51 -05:00

48 lines
1.2 KiB
Go

// Copyright 2017 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package cache
import (
"github.com/pingcap/tidb/ast"
"github.com/pingcap/tidb/plan"
)
// SQLCacheValue stores the cached Statement and StmtNode.
type SQLCacheValue struct {
StmtNode ast.StmtNode
Plan plan.Plan
Expensive bool
}
// NewSQLCacheValue creates a SQLCacheValue.
func NewSQLCacheValue(ast ast.StmtNode, plan plan.Plan, expensive bool) *SQLCacheValue {
return &SQLCacheValue{
StmtNode: ast,
Plan: plan,
Expensive: expensive,
}
}
// PSTMTPlanCacheValue stores the cached Statement and StmtNode.
type PSTMTPlanCacheValue struct {
Plan plan.Plan
}
// NewPSTMTPlanCacheValue creates a SQLCacheValue.
func NewPSTMTPlanCacheValue(plan plan.Plan) *PSTMTPlanCacheValue {
return &PSTMTPlanCacheValue{
Plan: plan,
}
}