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// Copyright 2016 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package xorm
// Begin a transaction
func (session *Session) Begin() error {
if session.isAutoCommit {
tx, err := session.DB().Begin()
if err != nil {
return err
}
session.isAutoCommit = false
session.isCommitedOrRollbacked = false
session.tx = tx
session.saveLastSQL("BEGIN TRANSACTION")
}
return nil
}
// Rollback When using transaction, you can rollback if any error
func (session *Session) Rollback() error {
if !session.isAutoCommit && !session.isCommitedOrRollbacked {
session.saveLastSQL(session.engine.dialect.RollBackStr())
session.isCommitedOrRollbacked = true
session.isAutoCommit = true
return session.tx.Rollback()
}
return nil
}
// Commit When using transaction, Commit will commit all operations.
func (session *Session) Commit() error {
if !session.isAutoCommit && !session.isCommitedOrRollbacked {
session.saveLastSQL("COMMIT")
session.isCommitedOrRollbacked = true
session.isAutoCommit = true
var err error
if err = session.tx.Commit(); err == nil {
// handle processors after tx committed
closureCallFunc := func(closuresPtr *[]func(interface{}), bean interface{}) {
if closuresPtr != nil {
for _, closure := range *closuresPtr {
closure(bean)
}
}
}
for bean, closuresPtr := range session.afterInsertBeans {
closureCallFunc(closuresPtr, bean)
if processor, ok := interface{}(bean).(AfterInsertProcessor); ok {
processor.AfterInsert()
}
}
for bean, closuresPtr := range session.afterUpdateBeans {
closureCallFunc(closuresPtr, bean)
if processor, ok := interface{}(bean).(AfterUpdateProcessor); ok {
processor.AfterUpdate()
}
}
for bean, closuresPtr := range session.afterDeleteBeans {
closureCallFunc(closuresPtr, bean)
if processor, ok := interface{}(bean).(AfterDeleteProcessor); ok {
processor.AfterDelete()
}
}
cleanUpFunc := func(slices *map[interface{}]*[]func(interface{})) {
if len(*slices) > 0 {
*slices = make(map[interface{}]*[]func(interface{}), 0)
}
}
cleanUpFunc(&session.afterInsertBeans)
cleanUpFunc(&session.afterUpdateBeans)
cleanUpFunc(&session.afterDeleteBeans)
}
return err
}
return nil
}
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