v0.1.7 Added IConnectPool interface and NoneConnectPool, SysConnectPool, SimpleConnectPool the three implements. You can choose one of them and the default is SysConnectPool. You can customrize your own connection pool. struct Engine added Close method, It should be invoked before system exit.

README.md

@@ -17,6 +17,7 @@ Drivers for Go's sql package which currently support database/sql includes:
 
 ## Changelog
 
+* **v0.1.7** : Added IConnectPool interface and NoneConnectPool, SysConnectPool, SimpleConnectPool the three implements. You can choose one of them and the default is SysConnectPool. You can customrize your own connection pool. struct Engine added Close method, It should be invoked before system exit.
 * **v0.1.6** : Added conversion interface support; added struct derive support; added single mapping support
 * **v0.1.5** : Added multi threads support; added Sql() function for struct query; Get function changed return inteface; MakeSession and Create are instead with NewSession and NewEngine.
 * **v0.1.4** : Added simple cascade load support; added more data type supports.
@@ -71,6 +72,10 @@ err, engine = xorm.NewEngine("sqlite3", "./test.db")
 ```Go
 engine.ShowSQL = true
 ```
+1.2 If you want to use your own connection pool
+```Go
+err = engine.SetPool(NewSimpleConnectPool())
+```
 
 2.Define a struct
 
@@ -278,7 +283,9 @@ err = session.Commit()
 if err != nil {
 	return
 }
-```
+```
+5.Derive mapping
+Please see derive.go in examples folder.
 
 ## Mapping Rules 
 
@@ -311,6 +318,9 @@ Another is use field tag, field tag support the below keywords which split with
     </tr>
     <tr>
         <td>unique</td><td>unique</td>
+    </tr>
+     <tr>
+        <td>extends</td><td>used in anonymous struct means mapping this struct's fields to table</td>
     </tr>
     <tr>
         <td>-</td><td>this field is not map as a table column</td>

README_CN.md

@@ -2,7 +2,7 @@
 
 [English](https://github.com/lunny/xorm/blob/master/README.md)
 
-xorm是一个Go语言的ORM库. 通过它可以使数据库操作非常简便。
+xorm是一个简单而强大的Go语言ORM库. 通过它可以使数据库操作非常简便。
 
 [![Build Status](https://drone.io/github.com/lunny/xorm/status.png)](https://drone.io/github.com/lunny/xorm/latest)
 
@@ -16,6 +16,7 @@ xorm是一个Go语言的ORM库. 通过它可以使数据库操作非常简便。
 
 ## 更新日志
 
+* **v0.1.7** : 新增IConnectPool接口以及NoneConnectPool, SysConnectPool, SimpleConnectPool三种实现，可以选择不使用连接池，使用系统连接池和使用自带连接池三种实现，默认为SysConnectPool，即系统自带的连接池。同时支持自定义连接池。Engine新增Close方法，在系统退出时应调用此方法。
 * **v0.1.6** : 新增Conversion，支持自定义类型到数据库类型的转换；新增查询结构体自动检测匿名成员支持；新增单向映射支持；
 * **v0.1.5** : 新增对多线程的支持；新增Sql()函数；支持任意sql语句的struct查询；Get函数返回值变动；MakeSession和Create函数被NewSession和NewEngine函数替代；
 * **v0.1.4** : Get函数和Find函数新增简单的级联载入功能；对更多的数据库类型支持。
@@ -26,7 +27,7 @@ xorm是一个Go语言的ORM库. 通过它可以使数据库操作非常简便。
 
 ## 特性
 
-* 支持Struct和数据库表之间的映射，映射方式支持命名约定和Tag两种方式
+* 支持Struct和数据库表之间的映射，映射方式支持命名约定和Tag两种方式，映射支持继承
 
 * 事务支持
 
@@ -34,7 +35,12 @@ xorm是一个Go语言的ORM库. 通过它可以使数据库操作非常简便。
 
 * 使用连写来简化调用
 
-* 支持使用Id, In, Where, Limit, Join, Having, Table, Sql等函数和结构体等方式作为条件
+* 支持使用Id, In, Where, Limit, Join, Having, Table, Sql等函数和结构体等方式作为条件
+
+* 支持数据库连接池
+
+* 支持级联加载struct
+
 
 ## 安装
 
@@ -50,6 +56,7 @@ import (
 	"github.com/lunny/xorm"
 )
 engine, err := xorm.NewEngine("mysql", "root:123@/test?charset=utf8")
+defer engine.Close()
 ```
 
 or
@@ -59,7 +66,8 @@ import (
 	_ "github.com/mattn/go-sqlite3"
 	"github.com/lunny/xorm"
 	)
-engine, err = xorm.NewEngine("sqlite3", "./test.db")
+engine, err = xorm.NewEngine("sqlite3", "./test.db")
+defer engine.Close()
 ```
 
 1.1.默认将不会显示自动生成的SQL语句，如果要显示，则需要设置
@@ -67,6 +75,11 @@ engine, err = xorm.NewEngine("sqlite3", "./test.db")
 ```Go
 engine.ShowSQL = true
 ```
+
+1.2.如果要更换连接池实现，可使用SetPool方法
+```Go
+err = engine.SetPool(NewSimpleConnectPool())
+```
 
 2.所有的ORM操作都针对一个或多个结构体，一个结构体对应一张表，定义一个结构体如下：
 
@@ -272,6 +285,10 @@ if err != nil {
 	return
 }
 ```
+
+5.匿名结构体继承：
+
+请查看Examples中的derive.go文件。
 
 ## 映射规则
 
@@ -305,6 +322,9 @@ UserInfo中的成员UserName将会自动对应名为user_name的字段。
     <tr>
         <td>unique</td><td>是否是唯一</td>
     </tr>
+    <tr>
+    	<td>extends</td><td>应用于一个匿名结构体之上，表示此匿名结构体的成员也映射到数据库中</td>
+    </tr>
     <tr>
         <td>-</td><td>这个Field将不进行字段映射</td>
     </tr>

VERSION

@@ -0,0 +1 @@
+xorm v0.1.7

deprecated.go

@@ -1,14 +1,20 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
+// Warning: All contents in this file will be removed from xorm some times after
 package xorm
 
-// all content in this file will be removed from xorm some times after
+// @deprecated : please use NewSession instead
-
-// @deprecation : please use NewSession instead
 func (engine *Engine) MakeSession() (Session, error) {
 	s := engine.NewSession()
 	return *s, nil
 }
 
-// @deprecation : please use NewEngine instead
+// @deprecated : please use NewEngine instead
 func Create(driverName string, dataSourceName string) Engine {
 	engine, _ := NewEngine(driverName, dataSourceName)
 	return *engine

engine.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import (
@@ -19,21 +26,39 @@ const (
 
 type dialect interface {
 	SqlType(t *Column) string
+	SupportInsertMany() bool
+	QuoteIdentifier() string
+	AutoIncrIdentifier() string
 }
 
 type Engine struct {
-	Mapper          IMapper
+	Mapper         IMapper
-	TagIdentifier   string
+	TagIdentifier  string
-	DriverName      string
+	DriverName     string
-	DataSourceName  string
+	DataSourceName string
-	Dialect         dialect
+	Dialect        dialect
-	Tables          map[reflect.Type]*Table
+	Tables         map[reflect.Type]*Table
-	mutex           *sync.Mutex
+	mutex          *sync.Mutex
-	AutoIncrement   string
+	ShowSQL        bool
-	ShowSQL         bool
+	pool           IConnectPool
-	InsertMany      bool
+	CacheMapping   bool
-	QuoteIdentifier string
+}
-	Pool            IConnectionPool
+
+func (engine *Engine) SupportInsertMany() bool {
+	return engine.Dialect.SupportInsertMany()
+}
+
+func (engine *Engine) QuoteIdentifier() string {
+	return engine.Dialect.QuoteIdentifier()
+}
+
+func (engine *Engine) AutoIncrIdentifier() string {
+	return engine.Dialect.AutoIncrIdentifier()
+}
+
+func (engine *Engine) SetPool(pool IConnectPool) error {
+	engine.pool = pool
+	return engine.pool.Init(engine)
 }
 
 func Type(bean interface{}) reflect.Type {
@@ -58,9 +83,16 @@ func (engine *Engine) NewSession() *Session {
 	return session
 }
 
+func (engine *Engine) Close() error {
+	return engine.pool.Close(engine)
+}
+
 func (engine *Engine) Test() error {
 	session := engine.NewSession()
 	defer session.Close()
+	if engine.ShowSQL {
+		fmt.Printf("PING DATABASE %v\n", engine.DriverName)
+	}
 	return session.Ping()
 }
 
@@ -264,9 +296,7 @@ func (engine *Engine) Map(beans ...interface{}) (e error) {
 	defer engine.mutex.Unlock()
 	for _, bean := range beans {
 		t := Type(bean)
-		if _, ok := engine.Tables[t]; !ok {
+		engine.Tables[t] = engine.MapType(t)
-			engine.Tables[t] = engine.MapType(t)
-		}
 	}
 	return
 }
@@ -305,6 +335,7 @@ func (e *Engine) CreateTables(beans ...interface{}) error {
 	if err != nil {
 		return err
 	}
+
 	for _, bean := range beans {
 		err = session.CreateTable(bean)
 		if err != nil {

examples/derive.go

@@ -32,6 +32,7 @@ func main() {
 		fmt.Println(err)
 		return
 	}
+	defer Orm.Close()
 	Orm.ShowSQL = true
 	err = Orm.CreateTables(&User{}, &LoginInfo{})
 	if err != nil {

examples/goroutine.go

@@ -7,7 +7,7 @@ import (
 	_ "github.com/mattn/go-sqlite3"
 	"os"
 	//"time"
-	"sync/atomic"
+	//"sync/atomic"
 	xorm "xorm"
 )
 
@@ -78,23 +78,29 @@ func test(engine *xorm.Engine) {
 		<-queue
 	}
 
-	conns := atomic.LoadInt32(&xorm.ConnectionNum)
+	//conns := atomic.LoadInt32(&xorm.ConnectionNum)
-	fmt.Println("connection number:", conns)
+	//fmt.Println("connection number:", conns)
 	fmt.Println("end")
 }
 
 func main() {
+	fmt.Println("create engine")
 	engine, err := sqliteEngine()
 	if err != nil {
 		fmt.Println(err)
 		return
 	}
+	engine.ShowSQL = true
+	fmt.Println(engine)
 	test(engine)
+	fmt.Println("test end")
+	engine.Close()
 
 	engine, err = mysqlEngine()
 	if err != nil {
 		fmt.Println(err)
 		return
 	}
+	defer engine.Close()
 	test(engine)
 }

examples/pool.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+	"fmt"
+	_ "github.com/mattn/go-sqlite3"
+	"os"
+	. "xorm"
+)
+
+type User struct {
+	Id   int64
+	Name string
+}
+
+func main() {
+	f := "pool.db"
+	os.Remove(f)
+
+	Orm, err := NewEngine("sqlite3", f)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	err = Orm.SetPool(NewSimpleConnectPool())
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	Orm.ShowSQL = true
+	err = Orm.CreateTables(&User{})
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+
+	for i := 0; i < 10; i++ {
+		_, err = Orm.Get(&User{})
+		if err != nil {
+			fmt.Println(err)
+			break
+		}
+
+	}
+}

mapper.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import (

mysql.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import "strconv"
@@ -5,7 +12,7 @@ import "strconv"
 type mysql struct {
 }
 
-func (db mysql) SqlType(c *Column) string {
+func (db *mysql) SqlType(c *Column) string {
 	switch t := c.SQLType; t {
 	case Date, DateTime, TimeStamp:
 		return "DATETIME"
@@ -17,3 +24,15 @@ func (db mysql) SqlType(c *Column) string {
 		return t.Name
 	}
 }
+
+func (db *mysql) SupportInsertMany() bool {
+	return true
+}
+
+func (db *mysql) QuoteIdentifier() string {
+	return "`"
+}
+
+func (db *mysql) AutoIncrIdentifier() string {
+	return "AUTO_INCREMENT"
+}

mysql_test.go

@@ -14,7 +14,7 @@ utf8 COLLATE utf8_general_ci;
 
 func TestMysql(t *testing.T) {
 	// You should drop all tables before executing this testing
-	me = Create("mysql", "root:@/xorm_test?charset=utf8")
+	me = Create("mysql", "root:123@/test?charset=utf8")
 	me.ShowSQL = true
 
 	directCreateTable(&me, t)

pool.go

@@ -1,81 +1,207 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
+// This file contains a connection pool interafce and two implements. One is
+// NoneConnectionPool is for direct connecting, another is a simple connection
+// pool by lock. Attention, the driver may has provided connection pool itself.
+// So the default pool is NoneConnectionPool.
 package xorm
 
 import (
 	"database/sql"
 	//"fmt"
-	//"sync"
+	"sync"
-	"sync/atomic"
+	//"sync/atomic"
-	//"time"
+	"time"
 )
 
-type IConnectionPool interface {
+// Interface IConnecPool is a connection pool interface, all implements should implement
+// Init, RetrieveDB, ReleaseDB and Close methods.
+// Init for init when engine be created or invoke SetPool
+// RetrieveDB for requesting a connection to db;
+// ReleaseDB for releasing a db connection;
+// Close for invoking when engine.Close
+type IConnectPool interface {
+	Init(engine *Engine) error
 	RetrieveDB(engine *Engine) (*sql.DB, error)
 	ReleaseDB(engine *Engine, db *sql.DB)
+	Close(engine *Engine) error
+	SetMaxIdleConns(conns int)
+	MaxIdleConns() int
 }
 
+// Struct NoneConnectPool is a implement for IConnectPool. It provides directly invoke driver's
+// open and release connection function
 type NoneConnectPool struct {
 }
 
-var ConnectionNum int32 = 0
+// NewNoneConnectPool new a NoneConnectPool.
+func NewNoneConnectPool() IConnectPool {
+	return &NoneConnectPool{}
+}
 
-func (p NoneConnectPool) RetrieveDB(engine *Engine) (db *sql.DB, err error) {
+// Init do nothing
-	atomic.AddInt32(&ConnectionNum, 1)
+func (p *NoneConnectPool) Init(engine *Engine) error {
+	return nil
+}
+
+// RetrieveDB directly open a connection
+func (p *NoneConnectPool) RetrieveDB(engine *Engine) (db *sql.DB, err error) {
 	db, err = engine.OpenDB()
-	//fmt.Printf("--open a connection--%x\n", &db)
 	return
 }
 
-func (p NoneConnectPool) ReleaseDB(engine *Engine, db *sql.DB) {
+// ReleaseDB directly close a connection
-	atomic.AddInt32(&ConnectionNum, -1)
+func (p *NoneConnectPool) ReleaseDB(engine *Engine, db *sql.DB) {
-	//fmt.Printf("--close a connection--%x\n", &db)
 	db.Close()
 }
 
-/*type SimpleConnectPool struct {
+// Close do nothing
-	releasedSessions []*sql.DB
+func (p *NoneConnectPool) Close(engine *Engine) error {
-	cur              int
+	return nil
-	usingSessions    map[*sql.DB]time.Time
-	maxWaitTimeOut   int
-	mutex            *sync.Mutex
 }
 
-func (p SimpleConnectPool) RetrieveDB(engine *Engine) (*sql.DB, error) {
+func (p *NoneConnectPool) SetMaxIdleConns(conns int) {
+}
+
+func (p *NoneConnectPool) MaxIdleConns() int {
+	return 0
+}
+
+// Struct SysConnectPool is a simple wrapper for using system default connection pool.
+// About the system connection pool, you can review the code database/sql/sql.go
+// It's currently default Pool implments.
+type SysConnectPool struct {
+	db           *sql.DB
+	maxIdleConns int
+}
+
+// NewSysConnectPool new a SysConnectPool.
+func NewSysConnectPool() IConnectPool {
+	return &SysConnectPool{}
+}
+
+// Init create a db immediately and keep it util engine closed.
+func (s *SysConnectPool) Init(engine *Engine) error {
+	db, err := engine.OpenDB()
+	if err != nil {
+		return err
+	}
+	s.db = db
+	s.maxIdleConns = 2
+	return nil
+}
+
+// RetrieveDB just return the only db
+func (p *SysConnectPool) RetrieveDB(engine *Engine) (db *sql.DB, err error) {
+	return p.db, nil
+}
+
+// ReleaseDB do nothing
+func (p *SysConnectPool) ReleaseDB(engine *Engine, db *sql.DB) {
+}
+
+// Close closed the only db
+func (p *SysConnectPool) Close(engine *Engine) error {
+	return p.db.Close()
+}
+
+func (p *SysConnectPool) SetMaxIdleConns(conns int) {
+	p.db.SetMaxIdleConns(conns)
+	p.maxIdleConns = conns
+}
+
+func (p *SysConnectPool) MaxIdleConns() int {
+	return p.maxIdleConns
+}
+
+// NewSimpleConnectPool new a SimpleConnectPool
+func NewSimpleConnectPool() IConnectPool {
+	return &SimpleConnectPool{releasedConnects: make([]*sql.DB, 10),
+		usingConnects:  map[*sql.DB]time.Time{},
+		cur:            -1,
+		maxWaitTimeOut: 14400,
+		maxIdleConns:   10,
+		mutex:          &sync.Mutex{},
+	}
+}
+
+// Struct SimpleConnectPool is a simple implementation for IConnectPool.
+// It's a custom connection pool and not use system connection pool.
+// Opening or Closing a database connection must be enter a lock.
+// This implements will be improved in furture.
+type SimpleConnectPool struct {
+	releasedConnects []*sql.DB
+	cur              int
+	usingConnects    map[*sql.DB]time.Time
+	maxWaitTimeOut   int
+	mutex            *sync.Mutex
+	maxIdleConns     int
+}
+
+func (s *SimpleConnectPool) Init(engine *Engine) error {
+	return nil
+}
+
+// RetrieveDB get a connection from connection pool
+func (p *SimpleConnectPool) RetrieveDB(engine *Engine) (*sql.DB, error) {
 	p.mutex.Lock()
 	defer p.mutex.Unlock()
 	var db *sql.DB = nil
 	var err error = nil
-	fmt.Printf("%x, rbegin - released:%v, using:%v\n", &p, p.cur+1, len(p.usingSessions))
+	//fmt.Printf("%x, rbegin - released:%v, using:%v\n", &p, p.cur+1, len(p.usingConnects))
 	if p.cur < 0 {
-		ConnectionNum = ConnectionNum + 1
-		fmt.Printf("new %v\n", ConnectionNum)
 		db, err = engine.OpenDB()
 		if err != nil {
 			return nil, err
 		}
-		p.usingSessions[db] = time.Now()
+		p.usingConnects[db] = time.Now()
 	} else {
-		db = p.releasedSessions[p.cur]
+		db = p.releasedConnects[p.cur]
-		p.usingSessions[db] = time.Now()
+		p.usingConnects[db] = time.Now()
-		p.releasedSessions[p.cur] = nil
+		p.releasedConnects[p.cur] = nil
 		p.cur = p.cur - 1
-		fmt.Println("release one")
 	}
 
-	fmt.Printf("%x, rend - released:%v, using:%v\n", &p, p.cur+1, len(p.usingSessions))
+	//fmt.Printf("%x, rend - released:%v, using:%v\n", &p, p.cur+1, len(p.usingConnects))
 	return db, nil
 }
 
-func (p SimpleConnectPool) ReleaseDB(engine *Engine, db *sql.DB) {
+// ReleaseDB release a db from connection pool
+func (p *SimpleConnectPool) ReleaseDB(engine *Engine, db *sql.DB) {
 	p.mutex.Lock()
 	defer p.mutex.Unlock()
-	fmt.Printf("%x, lbegin - released:%v, using:%v\n", &p, p.cur+1, len(p.usingSessions))
+	//fmt.Printf("%x, lbegin - released:%v, using:%v\n", &p, p.cur+1, len(p.usingConnects))
-	if p.cur >= 29 {
+	if p.cur >= p.maxIdleConns-1 {
-		ConnectionNum = ConnectionNum - 1
 		db.Close()
 	} else {
 		p.cur = p.cur + 1
-		p.releasedSessions[p.cur] = db
+		p.releasedConnects[p.cur] = db
 	}
-	delete(p.usingSessions, db)
+	delete(p.usingConnects, db)
-	fmt.Printf("%x, lend - released:%v, using:%v\n", &p, p.cur+1, len(p.usingSessions))
+	//fmt.Printf("%x, lend - released:%v, using:%v\n", &p, p.cur+1, len(p.usingConnects))
-}*/
+}
+
+// Close release all db
+func (p *SimpleConnectPool) Close(engine *Engine) error {
+	p.mutex.Lock()
+	defer p.mutex.Unlock()
+	for len(p.releasedConnects) > 0 {
+		p.releasedConnects[0].Close()
+		p.releasedConnects = p.releasedConnects[1:]
+	}
+
+	return nil
+}
+
+func (p *SimpleConnectPool) SetMaxIdleConns(conns int) {
+	p.maxIdleConns = conns
+}
+
+func (p *SimpleConnectPool) MaxIdleConns() int {
+	return p.maxIdleConns
+}

session.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import (
@@ -29,7 +36,7 @@ func (session *Session) Init() {
 func (session *Session) Close() {
 	defer func() {
 		if session.Db != nil {
-			session.Engine.Pool.ReleaseDB(session.Engine, session.Db)
+			session.Engine.pool.ReleaseDB(session.Engine, session.Db)
 			session.Db = nil
 			session.Tx = nil
 			session.Init()
@@ -97,7 +104,7 @@ func (session *Session) Having(conditions string) *Session {
 
 func (session *Session) newDb() error {
 	if session.Db == nil {
-		db, err := session.Engine.Pool.RetrieveDB(session.Engine)
+		db, err := session.Engine.pool.RetrieveDB(session.Engine)
 		if err != nil {
 			return err
 		}
@@ -571,7 +578,7 @@ func (session *Session) Insert(beans ...interface{}) (int64, error) {
 	for _, bean := range beans {
 		sliceValue := reflect.Indirect(reflect.ValueOf(bean))
 		if sliceValue.Kind() == reflect.Slice {
-			if session.Engine.InsertMany {
+			if session.Engine.SupportInsertMany() {
 				lastId, err = session.InsertMulti(bean)
 				if err != nil {
 					if !isInTransaction {
@@ -642,7 +649,7 @@ func (session *Session) InsertMulti(rowsSlicePtr interface{}) (int64, error) {
 				}
 				if table, ok := session.Engine.Tables[fieldValue.Type()]; ok {
 					pkField := reflect.Indirect(fieldValue).FieldByName(table.PKColumn().FieldName)
-					fmt.Println(pkField.Interface())
+					//fmt.Println(pkField.Interface())
 					args = append(args, pkField.Interface())
 				} else {
 					args = append(args, val)
@@ -674,9 +681,9 @@ func (session *Session) InsertMulti(rowsSlicePtr interface{}) (int64, error) {
 	}
 
 	statement := fmt.Sprintf("INSERT INTO %v%v%v (%v) VALUES (%v)",
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		session.Statement.TableName(),
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		strings.Join(colNames, ", "),
 		strings.Join(colMultiPlaces, "),("))
 
@@ -696,6 +703,7 @@ func (session *Session) InsertMulti(rowsSlicePtr interface{}) (int64, error) {
 
 func (session *Session) InsertOne(bean interface{}) (int64, error) {
 	table := session.Engine.AutoMap(bean)
+	//fmt.Printf("table: %v\n", table)
 	session.Statement.RefTable = table
 	colNames := make([]string, 0)
 	colPlaces := make([]string, 0)
@@ -736,9 +744,9 @@ func (session *Session) InsertOne(bean interface{}) (int64, error) {
 	}
 
 	sql := fmt.Sprintf("INSERT INTO %v%v%v (%v) VALUES (%v)",
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		session.Statement.TableName(),
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		strings.Join(colNames, ", "),
 		strings.Join(colPlaces, ", "))
 
@@ -801,9 +809,9 @@ func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int6
 	}
 
 	sql := fmt.Sprintf("UPDATE %v%v%v SET %v %v",
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		session.Statement.TableName(),
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		strings.Join(colNames, ", "),
 		condition)
 
@@ -840,9 +848,9 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 	}
 
 	statement := fmt.Sprintf("DELETE FROM %v%v%v %v",
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		session.Statement.TableName(),
-		session.Engine.QuoteIdentifier,
+		session.Engine.QuoteIdentifier(),
 		condition)
 
 	res, err := session.Exec(statement, append(st.Params, args...)...)

sqlite3.go

@@ -1,9 +1,16 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 type sqlite3 struct {
 }
 
-func (db sqlite3) SqlType(c *Column) string {
+func (db *sqlite3) SqlType(c *Column) string {
 	switch t := c.SQLType; t {
 	case Date, DateTime, TimeStamp:
 		return "NUMERIC"
@@ -21,3 +28,15 @@ func (db sqlite3) SqlType(c *Column) string {
 		return t.Name
 	}
 }
+
+func (db *sqlite3) SupportInsertMany() bool {
+	return true
+}
+
+func (db *sqlite3) QuoteIdentifier() string {
+	return "`"
+}
+
+func (db *sqlite3) AutoIncrIdentifier() string {
+	return "AUTOINCREMENT"
+}

statement.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import (
@@ -104,7 +111,8 @@ func BuildConditions(engine *Engine, table *Table, bean interface{}) ([]string,
 		} else {
 			args = append(args, val)
 		}
-		colNames = append(colNames, engine.QuoteIdentifier+col.Name+engine.QuoteIdentifier+"=?")
+		colNames = append(colNames, fmt.Sprintf("%v%v%v = ?", engine.QuoteIdentifier(),
+			col.Name, engine.QuoteIdentifier()))
 	}
 
 	return colNames, args
@@ -114,6 +122,7 @@ func (statement *Statement) TableName() string {
 	if statement.AltTableName != "" {
 		return statement.AltTableName
 	}
+
 	if statement.RefTable != nil {
 		return statement.RefTable.Name
 	}
@@ -179,7 +188,7 @@ func (statement *Statement) genColumnStr(col *Column) string {
 	}
 
 	if col.IsAutoIncrement {
-		sql += statement.Engine.AutoIncrement + " "
+		sql += statement.Engine.AutoIncrIdentifier() + " "
 	}
 
 	if col.Nullable {

table.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import (

testbase.go

@@ -107,7 +107,7 @@ func insertAutoIncr(engine *Engine, t *testing.T) {
 }
 
 func insertMulti(engine *Engine, t *testing.T) {
-	engine.InsertMany = true
+	//engine.InsertMany = true
 	users := []Userinfo{
 		{Username: "xlw", Departname: "dev", Alias: "lunny2", Created: time.Now()},
 		{Username: "xlw2", Departname: "dev", Alias: "lunny3", Created: time.Now()},
@@ -119,7 +119,7 @@ func insertMulti(engine *Engine, t *testing.T) {
 		t.Error(err)
 	}
 
-	engine.InsertMany = false
+	/*engine.InsertMany = false
 
 	users = []Userinfo{
 		{Username: "xlw9", Departname: "dev", Alias: "lunny9", Created: time.Now()},
@@ -132,7 +132,7 @@ func insertMulti(engine *Engine, t *testing.T) {
 		t.Error(err)
 	}
 
-	engine.InsertMany = true
+	engine.InsertMany = true*/
 }
 
 func insertTwoTable(engine *Engine, t *testing.T) {

xorm.go

@@ -1,3 +1,10 @@
+// Copyright 2013 The XORM Authors. All rights reserved.
+// Use of this source code is governed by a BSD
+// license that can be found in the LICENSE file.
+
+// Package xorm provides is a simple and powerful ORM for Go. It makes your
+// database operation simple.
+
 package xorm
 
 import (
@@ -9,34 +16,34 @@ import (
 	//"time"
 )
 
+const (
+	version string = "0.1.6"
+)
+
 func NewEngine(driverName string, dataSourceName string) (*Engine, error) {
 	engine := &Engine{ShowSQL: false, DriverName: driverName, Mapper: SnakeMapper{},
 		DataSourceName: dataSourceName}
 
 	engine.Tables = make(map[reflect.Type]*Table)
 	engine.mutex = &sync.Mutex{}
-	engine.InsertMany = true
+	//engine.InsertMany = true
 	engine.TagIdentifier = "xorm"
-	engine.QuoteIdentifier = "`"
+	//engine.QuoteIdentifier = "`"
 	if driverName == SQLITE {
-		engine.Dialect = sqlite3{}
+		engine.Dialect = &sqlite3{}
-		engine.AutoIncrement = "AUTOINCREMENT"
+		//engine.AutoIncrement = "AUTOINCREMENT"
 		//engine.Pool = NoneConnectPool{}
 	} else if driverName == MYSQL {
-		engine.Dialect = mysql{}
+		engine.Dialect = &mysql{}
-		engine.AutoIncrement = "AUTO_INCREMENT"
+		//engine.AutoIncrement = "AUTO_INCREMENT"
 	} else {
 		return nil, errors.New(fmt.Sprintf("Unsupported driver name: %v", driverName))
 	}
 
-	/*engine.Pool = &SimpleConnectPool{
+	//engine.Pool = NewSimpleConnectPool()
-		releasedSessions: make([]*sql.DB, 30),
+	//engine.Pool = NewNoneConnectPool()
-		usingSessions:    map[*sql.DB]time.Time{},
+	engine.pool = NewSysConnectPool()
-		cur:              -1,
+	err := engine.pool.Init(engine)
-		maxWaitTimeOut:   14400,
-		mutex:            &sync.Mutex{},
-	}*/
-	engine.Pool = &NoneConnectPool{}
 
-	return engine, nil
+	return engine, err
 }