enhancement: auto-transaction #1093
1
.gitignore
vendored
1
.gitignore
vendored
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@ -28,5 +28,6 @@ temp_test.go
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.vscode
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xorm.test
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*.sqlite3
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test.db.sql
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.idea/
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26
transaction.go
Normal file
26
transaction.go
Normal file
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@ -0,0 +1,26 @@
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// Copyright 2018 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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// Transaction Execute sql wrapped in a transaction(abbr as tx), tx will automatic commit if no errors occurred
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func (engine *Engine) Transaction(f func(*Session) (interface{}, error)) (interface{}, error) {
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session := engine.NewSession()
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defer session.Close()
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if err := session.Begin(); err != nil {
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return nil, err
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}
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result, err := f(session)
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if err != nil {
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return nil, err
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}
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if err := session.Commit(); err != nil {
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return nil, err
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}
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return result, nil
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}
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52
transancation_test.go
Normal file
52
transancation_test.go
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@ -0,0 +1,52 @@
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// Copyright 2017 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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import (
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"fmt"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestAutoTransaction(t *testing.T) {
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assert.NoError(t, prepareEngine())
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type TestTx struct {
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Id int64 `xorm:"autoincr pk"`
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Msg string `xorm:"varchar(255)"`
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Created time.Time `xorm:"created"`
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}
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assert.NoError(t, testEngine.Sync2(new(TestTx)))
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engine := testEngine.(*Engine)
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// will success
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engine.Transaction(func(session *Session) (interface{}, error) {
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_, err := session.Insert(TestTx{Msg: "hi"})
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assert.NoError(t, err)
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return nil, nil
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})
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has, err := engine.Exist(&TestTx{Msg: "hi"})
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assert.NoError(t, err)
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assert.EqualValues(t, true, has)
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// will rollback
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_, err = engine.Transaction(func(session *Session) (interface{}, error) {
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_, err := session.Insert(TestTx{Msg: "hello"})
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assert.NoError(t, err)
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return nil, fmt.Errorf("rollback")
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})
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assert.Error(t, err)
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has, err = engine.Exist(&TestTx{Msg: "hello"})
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assert.NoError(t, err)
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assert.EqualValues(t, false, has)
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}
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