use default connection params

README.md

@@ -1,11 +1,11 @@
 # xorm
 ===========
 
-[中文](README_CN.md)
+[中文](./README_CN.md)
 
 xorm is an ORM for Go. It lets you map Go structs to tables in a database. 
 
-Right now, it interfaces with Mysql/SQLite. The goal however is to add support for PostgreSQL/DB2/MS ADODB/ODBC/Oracle in the future. 
+Right now, it supports Mysql and SQLite. The goal however is to add support for PostgreSQL/DB2/MS ADODB/ODBC/Oracle in the future. 
 
 All in all, it's not entirely ready for product use yet, but it's getting there.
 
@@ -21,9 +21,13 @@ SQLite: [github.com/mattn/go-sqlite3](https://github.com/mattn/go-sqlite3)
 
 ## Quick Start
 
-1.Create a database engine (for example: mysql)
+1.Create a database engine just like sql.OpenDB (for example: mysql)
 
-	engine := xorm.Create("mysql://root:123@localhost/test")
+	engine := xorm.Create("mysql", "root:123@/test?charset=utf8")
+
+or
+
+	engine = xorm.Create("sqlite3", "./test.db")
 
 
 2.Define your struct

README_CN.md

@@ -21,9 +21,13 @@ SQLite: [github.com/mattn/go-sqlite3](https://github.com/mattn/go-sqlite3)
 
 ## 快速开始
 
-1.创建数据库引擎 (例如: mysql)
+1.创建数据库引擎，这个函数的参数和sql.OpenDB相同，但不会立即创建连接 (例如: mysql)
 
-	engine := xorm.Create("mysql://root:123@localhost/test")
+	engine := xorm.Create("mysql", "root:123@/test?charset=utf8")
+
+or
+
+	engine = xorm.Create("sqlite3", "./test.db")
 
 
 2.定义你的Struct

engine.go

@@ -2,7 +2,7 @@ package xorm
 
 import (
 	"database/sql"
-	"fmt"
+	//"fmt"
 	"reflect"
 	"strconv"
 	"strings"
@@ -11,21 +11,15 @@ import (
 const (
 	PQSQL   = "pqsql"
 	MSSQL   = "mssql"
-	SQLITE  = "sqlite"
+	SQLITE  = "sqlite3"
 	MYSQL   = "mysql"
 	MYMYSQL = "mymysql"
 )
 
 type Engine struct {
 	Mapper          IMapper
-	Protocol        string
+	DriverName      string
-	UserName        string
+	DataSourceName  string
-	Password        string
-	Host            string
-	Port            int
-	DBName          string
-	Charset         string
-	Others          string
 	Tables          map[reflect.Type]Table
 	AutoIncrement   string
 	ShowSQL         bool
@@ -45,29 +39,8 @@ func StructName(v reflect.Type) string {
 	return v.Name()
 }
 
-func (e *Engine) OpenDB() (db *sql.DB, err error) {
+func (e *Engine) OpenDB() (*sql.DB, error) {
-	db = nil
+	return sql.Open(e.DriverName, e.DataSourceName)
-	err = nil
-	if e.Protocol == SQLITE {
-		// 'sqlite:///foo.db'
-		db, err = sql.Open("sqlite3", e.Others)
-		// 'sqlite:///:memory:'
-	} else if e.Protocol == MYSQL {
-		// 'mysql://<username>:<passwd>@<host>/<dbname>?charset=<encoding>'
-		connstr := strings.Join([]string{e.UserName, ":",
-			e.Password, "@tcp(", e.Host, ":3306)/", e.DBName, "?charset=", e.Charset}, "")
-		db, err = sql.Open(e.Protocol, connstr)
-	} else if e.Protocol == MYMYSQL {
-		//   DBNAME/USER/PASSWD
-		connstr := strings.Join([]string{e.DBName, e.UserName, e.Password}, "/")
-		db, err = sql.Open(e.Protocol, connstr)
-		//   unix:SOCKPATH*DBNAME/USER/PASSWD
-		//   unix:SOCKPATH,OPTIONS*DBNAME/USER/PASSWD
-		//   tcp:ADDR*DBNAME/USER/PASSWD
-		//   tcp:ADDR,OPTIONS*DBNAME/USER/PASSWD
-	}
-
-	return
 }
 
 func (engine *Engine) MakeSession() (session Session, err error) {
@@ -75,16 +48,8 @@ func (engine *Engine) MakeSession() (session Session, err error) {
 	if err != nil {
 		return Session{}, err
 	}
-	if engine.Protocol == PQSQL {
+
-		engine.QuoteIdentifier = "\""
 	session = Session{Engine: engine, Db: db}
-	} else if engine.Protocol == MSSQL {
-		engine.QuoteIdentifier = ""
-		session = Session{Engine: engine, Db: db}
-	} else {
-		engine.QuoteIdentifier = "`"
-		session = Session{Engine: engine, Db: db}
-	}
 	session.Init()
 	return
 }
@@ -94,6 +59,11 @@ func (engine *Engine) Where(querystring string, args ...interface{}) *Engine {
 	return engine
 }
 
+func (engine *Engine) Id(id int) *Engine {
+	engine.Statement.Id(id)
+	return engine
+}
+
 func (engine *Engine) Limit(limit int, start ...int) *Engine {
 	engine.Statement.Limit(limit, start...)
 	return engine
@@ -125,12 +95,12 @@ func (e *Engine) genColumnStr(col *Column) string {
 	if col.SQLType == Date {
 		sql += " datetime "
 	} else {
-		if e.Protocol == SQLITE && col.IsPrimaryKey {
+		if e.DriverName == SQLITE && col.IsPrimaryKey {
 			sql += "integer"
 		} else {
 			sql += col.SQLType.Name
 		}
-		if e.Protocol != SQLITE {
+		if e.DriverName != SQLITE {
 			if col.SQLType != Decimal {
 				sql += "(" + strconv.Itoa(col.Length) + ")"
 			} else {
@@ -165,17 +135,11 @@ func (e *Engine) genCreateSQL(table *Table) string {
 		sql += ","
 	}
 	sql = sql[:len(sql)-2] + ");"
-	if e.ShowSQL {
-		fmt.Println(sql)
-	}
 	return sql
 }
 
 func (e *Engine) genDropSQL(table *Table) string {
 	sql := "DROP TABLE IF EXISTS `" + table.Name + "`;"
-	if e.ShowSQL {
-		fmt.Println(sql)
-	}
 	return sql
 }
 

session.go

@@ -32,6 +32,11 @@ func (session *Session) Where(querystring string, args ...interface{}) *Session
 	return session
 }
 
+func (session *Session) Id(id int) *Session {
+	session.Statement.Id(id)
+	return session
+}
+
 func (session *Session) Limit(limit int, start ...int) *Session {
 	session.Statement.Limit(limit, start...)
 	return session
@@ -171,6 +176,9 @@ func (session *Session) innerExec(sql string, args ...interface{}) (sql.Result,
 }
 
 func (session *Session) Exec(sql string, args ...interface{}) (sql.Result, error) {
+	if session.Statement.Table != nil && session.Statement.Table.PrimaryKey != "" {
+		sql = strings.Replace(sql, "(id)", session.Statement.Table.PrimaryKey, -1)
+	}
 	if session.Engine.ShowSQL {
 		fmt.Println(sql)
 	}
@@ -272,11 +280,14 @@ func (session *Session) Find(rowsSlicePtr interface{}, condiBean ...interface{})
 	return nil
 }
 
-func (session *Session) Query(sqls string, paramStr ...interface{}) (resultsSlice []map[string][]byte, err error) {
+func (session *Session) Query(sql string, paramStr ...interface{}) (resultsSlice []map[string][]byte, err error) {
-	if session.Engine.ShowSQL {
+	if session.Statement.Table != nil && session.Statement.Table.PrimaryKey != "" {
-		fmt.Println(sqls)
+		sql = strings.Replace(sql, "(id)", session.Statement.Table.PrimaryKey, -1)
 	}
-	s, err := session.Db.Prepare(sqls)
+	if session.Engine.ShowSQL {
+		fmt.Println(sql)
+	}
+	s, err := session.Db.Prepare(sql)
 	if err != nil {
 		return nil, err
 	}
@@ -354,7 +365,7 @@ func (session *Session) Insert(beans ...interface{}) (int64, error) {
 
 func (session *Session) InsertOne(bean interface{}) (int64, error) {
 	table := session.Engine.Bean2Table(bean)
-
+	session.Statement.Table = table
 	colNames := make([]string, 0)
 	colPlaces := make([]string, 0)
 	var args = make([]interface{}, 0)
@@ -425,6 +436,7 @@ func (session *Session) BuildConditions(table *Table, bean interface{}) ([]strin
 
 func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int64, error) {
 	table := session.Engine.Bean2Table(bean)
+	session.Statement.Table = table
 	colNames, args := session.BuildConditions(table, bean)
 	var condiColNames []string
 	var condiArgs []interface{}
@@ -473,6 +485,7 @@ func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int6
 
 func (session *Session) Delete(bean interface{}) (int64, error) {
 	table := session.Engine.Bean2Table(bean)
+	session.Statement.Table = table
 	colNames, args := session.BuildConditions(table, bean)
 
 	var condition = ""

statement.go

@@ -38,6 +38,16 @@ func (statement *Statement) Where(querystring string, args ...interface{}) {
 	statement.Params = args
 }
 
+func (statement *Statement) Id(id int) {
+	if statement.WhereStr == "" {
+		statement.WhereStr = "(id)=?"
+		statement.Params = []interface{}{id}
+	} else {
+		statement.WhereStr = statement.WhereStr + " and (id)=?"
+		statement.Params = append(statement.Params, id)
+	}
+}
+
 func (statement *Statement) Limit(limit int, start ...int) {
 	statement.LimitN = limit
 	if len(start) > 0 {
@@ -76,7 +86,7 @@ func (statement Statement) genCountSql() string {
 }
 
 func (statement Statement) genSelectSql(columnStr string) (a string) {
-	if statement.Engine.Protocol == "mssql" {
+	if statement.Engine.DriverName == MSSQL {
 		if statement.Start > 0 {
 			a = fmt.Sprintf("select ROW_NUMBER() OVER(order by %v )as rownum,%v from %v",
 				statement.Table.PKColumn().Name,

xorm.go

@@ -2,48 +2,26 @@ package xorm
 
 import (
 	"reflect"
-	"strings"
 )
 
-// 'sqlite:///foo.db'
+func Create(driverName string, dataSourceName string) Engine {
-// 'sqlite:////Uses/lunny/foo.db'
+	engine := Engine{ShowSQL: false, DriverName: driverName, Mapper: SnakeMapper{},
-// 'sqlite:///:memory:'
+		DataSourceName: dataSourceName}
-// '<protocol>://<username>:<passwd>@<host>/<dbname>?charset=<encoding>'
+
-func Create(schema string) Engine {
-	engine := Engine{}
-	engine.Mapper = SnakeMapper{}
 	engine.Tables = make(map[reflect.Type]Table)
 	engine.Statement.Engine = &engine
-	l := strings.Split(schema, "://")
+	if driverName == SQLITE {
-	if len(l) == 2 {
-		engine.Protocol = l[0]
-		if l[0] == "sqlite" {
-			engine.Charset = "utf8"
 		engine.AutoIncrement = "AUTOINCREMENT"
-			if l[1] == "/:memory:" {
-				engine.Others = l[1]
-			} else if strings.Index(l[1], "//") == 0 {
-				engine.Others = l[1][1:]
-			} else if strings.Index(l[1], "/") == 0 {
-				engine.Others = "." + l[1]
-			}
 	} else {
 		engine.AutoIncrement = "AUTO_INCREMENT"
-			x := strings.Split(l[1], ":")
-			engine.UserName = x[0]
-			y := strings.Split(x[1], "@")
-			engine.Password = y[0]
-			z := strings.Split(y[1], "/")
-			engine.Host = z[0]
-			a := strings.Split(z[1], "?")
-			engine.DBName = a[0]
-			if len(a) == 2 {
-				engine.Charset = strings.Split(a[1], "=")[1]
-			} else {
-				engine.Charset = "utf8"
-			}
-		}
 	}
 
+	if engine.DriverName == PQSQL {
+		engine.QuoteIdentifier = "\""
+	} else if engine.DriverName == MSSQL {
+		engine.QuoteIdentifier = ""
+	} else {
+		engine.QuoteIdentifier = "`"
+	}
 	return engine
 }

xorm_test.go

@@ -132,8 +132,13 @@ func insertTwoTable(t *testing.T) {
 func update(t *testing.T) {
 	// update by id
 	user := Userinfo{Username: "xxx"}
-	condiUser := Userinfo{Uid: 1}
+	_, err := engine.Id(1).Update(&user)
-	_, err := engine.Update(&user, &condiUser)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	_, err = engine.Update(&Userinfo{Username: "yyy"}, &user)
 	if err != nil {
 		t.Error(err)
 	}
@@ -320,7 +325,7 @@ func combineTransaction(t *testing.T) {
 }
 
 func TestMysql(t *testing.T) {
-	engine = xorm.Create("mysql://root:123@localhost/test")
+	engine = xorm.Create("mysql", "root:123@/test?charset=utf8")
 	engine.ShowSQL = true
 
 	directCreateTable(t)
@@ -345,7 +350,7 @@ func TestMysql(t *testing.T) {
 }
 
 func TestSqlite(t *testing.T) {
-	engine = xorm.Create("sqlite:///test.db")
+	engine = xorm.Create("sqlite3", "./test.db")
 	engine.ShowSQL = true
 
 	directCreateTable(t)