orm工具包 jdao

• 授权协议: Apache
• 开发语言: Java
• 操作系统: 跨平台
• 软件首页: https://github.com/donnie4w/jdao
• 软件文档: https://github.com/donnie4w/jdao

软件介绍

jdao是轻量级orm工具包，生成与数据表对应的dao类，持久层dao对象操作，同时也支持原生sql语句操作，支持多数据源，对象缓存等.

jdao 初始化： 
DaoFactory.setDefaultDataSource(getDataSource()); 
jdao初始化 设置数据源，一步完成。 

getDataSource()获取数据源方法： 
如：ActionTest1_1_2.java 中： 
public static DataSource getDataSource() throws Exception { 
Properties p = new Properties(); 
p.load(ActionTest1_1_2.class.getClassLoader().getResourceAsStream("druid.properties")); 
return DruidDataSourceFactory.createDataSource(p);}

例如：对 数据库表名为 hstest的操作 
CREATE TABLE hstest ( 
id int(10) DEFAULT NULL, 
value varchar(50) DEFAULT '', 
rowname varchar(50) DEFAULT '' 
)

一.生成dao对象,生成Hstest.java 
public void createDao() throws Exception { 
Class.forName("com.mysql.jdbc.Driver"); 
String driverUrl = "jdbc:mysql://127.0.0.1:3306/test"; 
String path = System.getProperty("user.dir") + "/test/com/jdao/action"; 
CreateDaoUtil.createFile("com.jdao.action", "hstest",path,DriverManager.getConnection(driverUrl, "root", "123456"), "utf-8"); 
//com.jdao.action 为 Hstest的包名 
//hstest为表名 
}

二.对Hstest对象的操作 查询SQL: select value,rowname from hstest where id between 2 and 10; 
jdao对象操作如下： 
Hstest t = new Hstest(); 
t.where(Hstest.ID.BETWEEN(2, 10)); 
t.query(Hstest.VALUE, Hstest.ROWNAME);

插入SQL: insert into hstest (id,rowname,value) values(1,"donnie","wuxiaodong") 
jdao对象操作如下： 
Hstest t = new Hstest(); 
t.setId(1); 
t.setRowname("donnie"); 
t.setValue("wuxiaodong"); 
t.save();

批量插入SQL: insert into hstest (id,rowname,value) values(1,"donnie1","wuxiaodong1"),(2,"donnie2","wuxiaodong2"),(3,"donnie3","wuxiaodong3") 
jdao对象操作如下： 
Hstest t = new Hstest(); 
t.setId(1); 
t.setRowname("donnie1"); 
t.setValue("wuxiaodong1"); 
t.addBatch(); 
t.setId(2); 
t.setRowname("donnie2"); 
t.setValue("wuxiaodong2"); 
t.addBatch(); 
t.setId(3); 
t.setRowname("donnie3"); 
t.setValue("wuxiaodong3"); 
t.addBatch(); 
t.batchForSave();

更新SQL: update hstest set rowname="wuxiaodong",value="wuxiaodong" where id=10 
jdao对象操作如下： 
Hstest t = new Hstest(); 
t.setRowname("wuxiaodong"); 
t.setValue("wuxiaodong"); 
t.where(Hstest.ID.EQ(10)); 
t.update(); 
删除SQL: delete from hstest where id=2 
jdao对象操作如下: 
Hstest t = new Hstest(); 
t.where(Hstest.ID.EQ(2)); 
t.delete(); 
三.支持SQL操作 DBUtils 
DBUtils> db=new DBUtils(); 
db.select("select * from hstest where id=? limit 1",1); 
System.out.println(db.getString("value")); 
int i = db.execute("insert into hstest(rowname,value)values(?,?)",1,2); 
四.自定义类继承 DBUtils 
任何子类继承自DBUtils 都可以设置与其对应的数据源，同时支持sql编写，支持翻页 
如：class RsTest extends DBUtils {} 
//翻页 
public static void testSelectListPage() throws Exception { 
RsTest rt = new RsTest(); 
// 分页查询方法 
rt.selectListPage(0, 20, "select * from hstest"); 
System.out.println(rt.rsList().size()); 
// selectListPage 会返回 totalcount 
List list = rt.rsList(); 
for (RsTest r : list) { 
System.out.println(r.getString("value")); 
} 
} 

//单行返回 
public static void testSelect() throws Exception { 
RsTest rt = new RsTest(); 
rt.select("select * from hstest where id=?", 1); 
System.out.println(rt.getString("value")); 
rt.select("select * from hstest where id=?", 2); 
System.out.println(rt.getString("value")); 
} 

//插入 
public static void testInsert() throws Exception { 
RsTest rt = new RsTest(); 
System.out.println(rt.execute("insert into hstest(value,rowname)values(?,?),(?,?) ", "wu1", "11", "wu2", "22")); 
} 

//生成dao 的翻页测试类 
public static void testPageTurn() throws Exception { 
Hstest ht = new Hstest(); 
ht.setPageTurn(true); //翻页 
ht.where(Hstest.ID.GE(0)); 
List list = ht.query(); 
System.out.println("totalcount:" + list.get(0).getTotalcount()); 
for (Hstest h : list) { 
System.out.println(h.getRowname() + " " + h.getValue()); 
} 
} 

//PageDao类测试 
public static void testPageDao() throws Exception { 
Hstest ht = new Hstest(); 
ht.where(Hstest.ID.GE(1)); 
PageDao pd = ht.selectListPage(); 
System.out.println("totalcount:" + pd.getTotalcount()); 
List list = pd.getList(); 
for (Hstest h : list) { 
System.out.println(h.getRowname() + " " + h.getValue()); 
} 
} 
五.事务 
Transaction t = new Transaction(getDataSource()); 
Hstest hstest = new Hstest(); 
hstest.setTransaction(t); 
hstest.setRowname("wu"); 
hstest.setValue("dong"); 
hstest.save(); 
Hstest hstest2 = new Hstest(); 
hstest2.setTransaction(t); 
hstest2.setRowname("wu2"); 
hstest2.setValue("dong2"); 
hstest2.save(); 
DBUtils rt = new DBUtils(); 
rt.setTransaction(t); 
rt.execute("insert into hstest(rowname,value)values(?,?)", 1, 2); 
t.rollBackAndClose();

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