数据库

// 创建name属性为James,age属性为25的record对象并添加到数据库
Record user = new Record()
.set("name", "James")
.set("age", 25);

Db.save("user", user);
 
// 删除id值为25的user表中的记录
Db.deleteById("user", 25);
 
// 查询id值为25的Record将其name属性改为James并更新到数据库
user = Db.findById("user", 25).set("name", "James");
Db.update("user", user);
 
// 获取user的name属性
String userName = user.getStr("name");
// 获取user的age属性
Integer userAge = user.getInt("age");
 
// 查询所有年龄大于18岁的user
List<Record> users = Db.find("select * from user where age > 18");
 
// 分页查询年龄大于18的user,当前页号为1,每页10个user
Page<Record> userPage = Db.paginate(1, 10, "select *", "from user where age > ?", 18);

boolean succeed = Db.tx(() -> {
    int count = Db.update("update account set cash = cash - ? where id = ?", 100, 123);
    int count2 = Db.update("update account set cash = cash + ? where id = ?", 100, 456);
    return count == 1 && count2 == 1;
});

@Table(tableName = "user", primaryKey = "id")
public class User extends BaseUser<User> {

}   

public abstract class BaseUser<M extends BaseUser<M>> extends JbootModel<M> implements IBean {

	public void setId(java.lang.Long id) {
		set("id", id);
	}
	
	public java.lang.Long getId() {
		return getLong("id");
	}

	// other getter setter ...

}

public class UserService extends JbootServiceBase<User>  {

    // 不需要做任何的实现
    
}  

//创建 UserService
UserService userService = new UserService();

// 创建name属性为James,age属性为25的User对象并添加到数据库
User user = new User().set("name", "James").set("age", 25);
userService.save(user); 

// 删除id值为25的User
userService.deleteById(25);
 
// 查询id值为25的User将其name属性改为James并更新到数据库
User user = userService.findById(25);
user.set("name", "James");
userService.update(user);
 
// 分页查询user,当前页号为1,每页10个user
Page<User> userPage = userService.paginate(1, 10);