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87 lines
1.9 KiB
87 lines
1.9 KiB
3 years ago
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package db
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import (
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"code.gitea.io/gitea/modules/setting"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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// Context represents a db context
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type Context struct {
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e Engine
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}
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// Engine returns db engine
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func (ctx *Context) Engine() Engine {
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return ctx.e
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}
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// NewSession returns a new session
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func (ctx *Context) NewSession() *xorm.Session {
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e, ok := ctx.e.(*xorm.Engine)
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if ok {
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return e.NewSession()
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}
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return nil
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}
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// DefaultContext represents a Context with default Engine
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func DefaultContext() *Context {
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return &Context{x}
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}
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// Committer represents an interface to Commit or Close the Context
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type Committer interface {
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Commit() error
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Close() error
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}
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// TxContext represents a transaction Context
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func TxContext() (*Context, Committer, error) {
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sess := x.NewSession()
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if err := sess.Begin(); err != nil {
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sess.Close()
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return nil, nil, err
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}
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return &Context{sess}, sess, nil
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}
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// WithContext represents executing database operations
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func WithContext(f func(ctx *Context) error) error {
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return f(&Context{x})
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}
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// WithTx represents executing database operations on a transaction
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func WithTx(f func(ctx *Context) error) error {
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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return err
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}
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if err := f(&Context{sess}); err != nil {
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return err
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}
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return sess.Commit()
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}
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// Iterate iterates the databases and doing something
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func Iterate(ctx *Context, tableBean interface{}, cond builder.Cond, fun func(idx int, bean interface{}) error) error {
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return ctx.e.Where(cond).
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BufferSize(setting.Database.IterateBufferSize).
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Iterate(tableBean, fun)
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}
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// Insert inserts records into database
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func Insert(ctx *Context, beans ...interface{}) error {
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_, err := ctx.e.Insert(beans...)
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return err
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}
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