mirror of
https://github.com/astaxie/beego.git
synced 2024-11-25 04:10:56 +00:00
315 lines
7.7 KiB
Go
315 lines
7.7 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
|
|
//
|
|
// 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,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build go1.8
|
|
|
|
// Package orm provide ORM for MySQL/PostgreSQL/sqlite
|
|
// Simple Usage
|
|
//
|
|
// package main
|
|
//
|
|
// import (
|
|
// "fmt"
|
|
// "github.com/astaxie/beego/orm"
|
|
// _ "github.com/go-sql-driver/mysql" // import your used driver
|
|
// )
|
|
//
|
|
// // Model Struct
|
|
// type User struct {
|
|
// Id int `orm:"auto"`
|
|
// Name string `orm:"size(100)"`
|
|
// }
|
|
//
|
|
// func init() {
|
|
// orm.RegisterDataBase("default", "mysql", "root:root@/my_db?charset=utf8", 30)
|
|
// }
|
|
//
|
|
// func main() {
|
|
// o := orm.NewOrm()
|
|
// user := User{Name: "slene"}
|
|
// // insert
|
|
// id, err := o.Insert(&user)
|
|
// // update
|
|
// user.Name = "astaxie"
|
|
// num, err := o.Update(&user)
|
|
// // read one
|
|
// u := User{Id: user.Id}
|
|
// err = o.Read(&u)
|
|
// // delete
|
|
// num, err = o.Delete(&u)
|
|
// }
|
|
//
|
|
// more docs: http://beego.me/docs/mvc/model/overview.md
|
|
package orm
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"errors"
|
|
|
|
"github.com/astaxie/beego/client/orm"
|
|
"github.com/astaxie/beego/client/orm/hints"
|
|
"github.com/astaxie/beego/core/utils"
|
|
)
|
|
|
|
// DebugQueries define the debug
|
|
const (
|
|
DebugQueries = iota
|
|
)
|
|
|
|
// Define common vars
|
|
var (
|
|
Debug = orm.Debug
|
|
DebugLog = orm.DebugLog
|
|
DefaultRowsLimit = orm.DefaultRowsLimit
|
|
DefaultRelsDepth = orm.DefaultRelsDepth
|
|
DefaultTimeLoc = orm.DefaultTimeLoc
|
|
ErrTxHasBegan = errors.New("<Ormer.Begin> transaction already begin")
|
|
ErrTxDone = errors.New("<Ormer.Commit/Rollback> transaction not begin")
|
|
ErrMultiRows = errors.New("<QuerySeter> return multi rows")
|
|
ErrNoRows = errors.New("<QuerySeter> no row found")
|
|
ErrStmtClosed = errors.New("<QuerySeter> stmt already closed")
|
|
ErrArgs = errors.New("<Ormer> args error may be empty")
|
|
ErrNotImplement = errors.New("have not implement")
|
|
)
|
|
|
|
type ormer struct {
|
|
delegate orm.Ormer
|
|
txDelegate orm.TxOrmer
|
|
isTx bool
|
|
}
|
|
|
|
var _ Ormer = new(ormer)
|
|
|
|
// read data to model
|
|
func (o *ormer) Read(md interface{}, cols ...string) error {
|
|
if o.isTx {
|
|
return o.txDelegate.Read(md, cols...)
|
|
}
|
|
return o.delegate.Read(md, cols...)
|
|
}
|
|
|
|
// read data to model, like Read(), but use "SELECT FOR UPDATE" form
|
|
func (o *ormer) ReadForUpdate(md interface{}, cols ...string) error {
|
|
if o.isTx {
|
|
return o.txDelegate.ReadForUpdate(md, cols...)
|
|
}
|
|
return o.delegate.ReadForUpdate(md, cols...)
|
|
}
|
|
|
|
// Try to read a row from the database, or insert one if it doesn't exist
|
|
func (o *ormer) ReadOrCreate(md interface{}, col1 string, cols ...string) (bool, int64, error) {
|
|
if o.isTx {
|
|
return o.txDelegate.ReadOrCreate(md, col1, cols...)
|
|
}
|
|
return o.delegate.ReadOrCreate(md, col1, cols...)
|
|
}
|
|
|
|
// insert model data to database
|
|
func (o *ormer) Insert(md interface{}) (int64, error) {
|
|
if o.isTx {
|
|
return o.txDelegate.Insert(md)
|
|
}
|
|
return o.delegate.Insert(md)
|
|
}
|
|
|
|
// insert some models to database
|
|
func (o *ormer) InsertMulti(bulk int, mds interface{}) (int64, error) {
|
|
if o.isTx {
|
|
return o.txDelegate.InsertMulti(bulk, mds)
|
|
}
|
|
return o.delegate.InsertMulti(bulk, mds)
|
|
}
|
|
|
|
// InsertOrUpdate data to database
|
|
func (o *ormer) InsertOrUpdate(md interface{}, colConflitAndArgs ...string) (int64, error) {
|
|
if o.isTx {
|
|
return o.txDelegate.InsertOrUpdate(md, colConflitAndArgs...)
|
|
}
|
|
return o.delegate.InsertOrUpdate(md, colConflitAndArgs...)
|
|
}
|
|
|
|
// update model to database.
|
|
// cols set the columns those want to update.
|
|
func (o *ormer) Update(md interface{}, cols ...string) (int64, error) {
|
|
if o.isTx {
|
|
return o.txDelegate.Update(md, cols...)
|
|
}
|
|
return o.delegate.Update(md, cols...)
|
|
}
|
|
|
|
// delete model in database
|
|
// cols shows the delete conditions values read from. default is pk
|
|
func (o *ormer) Delete(md interface{}, cols ...string) (int64, error) {
|
|
if o.isTx {
|
|
return o.txDelegate.Delete(md, cols...)
|
|
}
|
|
return o.delegate.Delete(md, cols...)
|
|
}
|
|
|
|
// create a models to models queryer
|
|
func (o *ormer) QueryM2M(md interface{}, name string) QueryM2Mer {
|
|
if o.isTx {
|
|
return o.txDelegate.QueryM2M(md, name)
|
|
}
|
|
return o.delegate.QueryM2M(md, name)
|
|
}
|
|
|
|
// load related models to md model.
|
|
// args are limit, offset int and order string.
|
|
//
|
|
// example:
|
|
// orm.LoadRelated(post,"Tags")
|
|
// for _,tag := range post.Tags{...}
|
|
//
|
|
// make sure the relation is defined in model struct tags.
|
|
func (o *ormer) LoadRelated(md interface{}, name string, args ...interface{}) (int64, error) {
|
|
kvs := make([]utils.KV, 0, 4)
|
|
for i, arg := range args {
|
|
switch i {
|
|
case 0:
|
|
if v, ok := arg.(bool); ok {
|
|
if v {
|
|
kvs = append(kvs, hints.DefaultRelDepth())
|
|
}
|
|
} else if v, ok := arg.(int); ok {
|
|
kvs = append(kvs, hints.RelDepth(v))
|
|
}
|
|
case 1:
|
|
kvs = append(kvs, hints.Limit(orm.ToInt64(arg)))
|
|
case 2:
|
|
kvs = append(kvs, hints.Offset(orm.ToInt64(arg)))
|
|
case 3:
|
|
kvs = append(kvs, hints.Offset(orm.ToInt64(arg)))
|
|
}
|
|
}
|
|
if o.isTx {
|
|
return o.txDelegate.LoadRelated(md, name, kvs...)
|
|
}
|
|
return o.delegate.LoadRelated(md, name, kvs...)
|
|
}
|
|
|
|
// return a QuerySeter for table operations.
|
|
// table name can be string or struct.
|
|
// e.g. QueryTable("user"), QueryTable(&user{}) or QueryTable((*User)(nil)),
|
|
func (o *ormer) QueryTable(ptrStructOrTableName interface{}) (qs QuerySeter) {
|
|
if o.isTx {
|
|
return o.txDelegate.QueryTable(ptrStructOrTableName)
|
|
}
|
|
return o.delegate.QueryTable(ptrStructOrTableName)
|
|
}
|
|
|
|
// switch to another registered database driver by given name.
|
|
func (o *ormer) Using(name string) error {
|
|
if o.isTx {
|
|
return ErrTxHasBegan
|
|
}
|
|
o.delegate = orm.NewOrmUsingDB(name)
|
|
return nil
|
|
}
|
|
|
|
// begin transaction
|
|
func (o *ormer) Begin() error {
|
|
if o.isTx {
|
|
return ErrTxHasBegan
|
|
}
|
|
return o.BeginTx(context.Background(), nil)
|
|
}
|
|
|
|
func (o *ormer) BeginTx(ctx context.Context, opts *sql.TxOptions) error {
|
|
if o.isTx {
|
|
return ErrTxHasBegan
|
|
}
|
|
txOrmer, err := o.delegate.BeginWithCtxAndOpts(ctx, opts)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
o.txDelegate = txOrmer
|
|
o.isTx = true
|
|
return nil
|
|
}
|
|
|
|
// commit transaction
|
|
func (o *ormer) Commit() error {
|
|
if !o.isTx {
|
|
return ErrTxDone
|
|
}
|
|
err := o.txDelegate.Commit()
|
|
if err == nil {
|
|
o.isTx = false
|
|
o.txDelegate = nil
|
|
} else if err == sql.ErrTxDone {
|
|
return ErrTxDone
|
|
}
|
|
return err
|
|
}
|
|
|
|
// rollback transaction
|
|
func (o *ormer) Rollback() error {
|
|
if !o.isTx {
|
|
return ErrTxDone
|
|
}
|
|
err := o.txDelegate.Rollback()
|
|
if err == nil {
|
|
o.isTx = false
|
|
o.txDelegate = nil
|
|
} else if err == sql.ErrTxDone {
|
|
return ErrTxDone
|
|
}
|
|
return err
|
|
}
|
|
|
|
// return a raw query seter for raw sql string.
|
|
func (o *ormer) Raw(query string, args ...interface{}) RawSeter {
|
|
if o.isTx {
|
|
return o.txDelegate.Raw(query, args...)
|
|
}
|
|
return o.delegate.Raw(query, args...)
|
|
}
|
|
|
|
// return current using database Driver
|
|
func (o *ormer) Driver() Driver {
|
|
if o.isTx {
|
|
return o.txDelegate.Driver()
|
|
}
|
|
return o.delegate.Driver()
|
|
}
|
|
|
|
// return sql.DBStats for current database
|
|
func (o *ormer) DBStats() *sql.DBStats {
|
|
if o.isTx {
|
|
return o.txDelegate.DBStats()
|
|
}
|
|
return o.delegate.DBStats()
|
|
}
|
|
|
|
// NewOrm create new orm
|
|
func NewOrm() Ormer {
|
|
o := orm.NewOrm()
|
|
return &ormer{
|
|
delegate: o,
|
|
}
|
|
}
|
|
|
|
// NewOrmWithDB create a new ormer object with specify *sql.DB for query
|
|
func NewOrmWithDB(driverName, aliasName string, db *sql.DB) (Ormer, error) {
|
|
o, err := orm.NewOrmWithDB(driverName, aliasName, db)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &ormer{
|
|
delegate: o,
|
|
}, nil
|
|
}
|