新增sqlite支持

g/database/gdb/gdb.go

@@ -5,20 +5,20 @@
 // You can obtain one at https://gitee.com/johng/gf.
 
 // 数据库ORM.
+// 默认内置支持MySQL, 其他数据库需要手动import对应的数据库引擎第三方包.
 package gdb
 
 import (
-	"database/sql"
-	"errors"
 	"fmt"
+	"time"
+    "errors"
+    "database/sql"
 	"gitee.com/johng/gf/g/container/gmap"
 	"gitee.com/johng/gf/g/container/gring"
 	"gitee.com/johng/gf/g/container/gtype"
 	"gitee.com/johng/gf/g/os/gcache"
 	"gitee.com/johng/gf/g/util/grand"
 	_ "github.com/go-sql-driver/mysql"
-	_ "github.com/lib/pq"
-	"time"
 )
 
 const (
@@ -127,8 +127,8 @@ var linkMysql = &dbmysql{}
 // PostgreSQL接口对象
 var linkPgsql = &dbpgsql{}
 
-//Sqlite接口对象
-//@author wxkj<wxscz@qq.com>
+// Sqlite接口对象
+// @author wxkj<wxscz@qq.com>
 var linkSqlite = &dbsqlite{}
 
 // 数据库查询缓存对象map，使用数据库连接名称作为键名，键值为查询缓存对象
@@ -209,14 +209,14 @@ func getConfigNodeByPriority(cg ConfigGroup) *ConfigNode {
 func newDb(masterNode *ConfigNode, slaveNode *ConfigNode, groupName string) (*Db, error) {
 	var link Link
 	switch masterNode.Type {
-	case "mysql":
-		link = linkMysql
-	case "pgsql":
-		link = linkPgsql
-	case "sqlite":
-		link = linkSqlite
-	default:
-		return nil, errors.New(fmt.Sprintf("unsupported db type '%s'", masterNode.Type))
+		case "mysql":
+			link = linkMysql
+		case "pgsql":
+			link = linkPgsql
+		case "sqlite":
+			link = linkSqlite
+		default:
+			return nil, errors.New(fmt.Sprintf("unsupported db type '%s'", masterNode.Type))
 	}
 	master, err := link.Open(masterNode)
 	if err != nil {

g/database/gdb/gdb_pgsql.go

@@ -13,7 +13,9 @@ import (
     "database/sql"
 )
 
-// postgresql的适配
+// PostgreSQL的适配.
+// 使用时需要import:
+// _ "github.com/lib/pq"
 // @todo 需要完善replace和save的操作覆盖
 
 // 数据库链接对象

g/database/gdb/gdb_sqlite.go

@@ -3,7 +3,7 @@
 // This Source Code Form is subject to the terms of the MIT License.
 // If a copy of the MIT was not distributed with this file,
 // You can obtain one at https://gitee.com/johng/gf.
-//@author wxkj<wxscz@qq.com>
+// @author wxkj<wxscz@qq.com>
 
 package gdb
 
@@ -11,6 +11,9 @@ import (
 	"database/sql"
 )
 
+// 使用时需要import:
+// _ "github.com/mattn/go-sqlite3"
+
 // 数据库链接对象
 type dbsqlite struct {
 	Db
@@ -21,11 +24,6 @@ func (db *dbsqlite) Open(c *ConfigNode) (*sql.DB, error) {
 	if c.Linkinfo != "" {
 		source = c.Linkinfo
 	} else {
-		//path, err := os.Getwd()
-		//if err != nil {
-		//	return nil, err
-		//}
-		//先这样吧
 		source = c.Name
 	}
 	if db, err := sql.Open("sqlite3", source); err == nil {

g/database/gdb/gdb_transaction.go

@@ -10,12 +10,11 @@ import (
     "fmt"
     "errors"
     "strings"
-    "database/sql"
-    _ "github.com/lib/pq"
-    _ "github.com/go-sql-driver/mysql"
-    "gitee.com/johng/gf/g/util/gconv"
     "reflect"
+    "database/sql"
     "gitee.com/johng/gf/g/os/gtime"
+    "gitee.com/johng/gf/g/util/gconv"
+    _ "github.com/go-sql-driver/mysql"
 )
 
 // 数据库事务对象