github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/pingcap/tidb/context/context.go (about)

     1  // Copyright 2015 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package context
    15  
    16  import (
    17  	"fmt"
    18  
    19  	"github.com/insionng/yougam/libraries/pingcap/tidb/kv"
    20  )
    21  
    22  // Context is an interface for transaction and executive args environment.
    23  type Context interface {
    24  	// GetTxn gets a transaction for further execution.
    25  	GetTxn(forceNew bool) (kv.Transaction, error)
    26  
    27  	// FinishTxn commits or rolls back the current transaction.
    28  	FinishTxn(rollback bool) error
    29  
    30  	// SetValue saves a value associated with this context for key.
    31  	SetValue(key fmt.Stringer, value interface{})
    32  
    33  	// Value returns the value associated with this context for key.
    34  	Value(key fmt.Stringer) interface{}
    35  
    36  	// ClearValue clears the value associated with this context for key.
    37  	ClearValue(key fmt.Stringer)
    38  }