Eclipse快速上手Hibernate--4. 继承映射(2)

Vehicle.hbm.xml

<?xml version="1.0" encoding="GBK"?>

 hibernate-mapping PUBLIC

    "-//Hibernate/Hibernate Mapping DTD 2.0//EN"

    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">



    

        

            

             

                  To add non XDoclet generator parameters, create a file named

                  hibernate-generator-params-Vehicle.xml

                  containing the additional parameters and place it in your merge dir.

              

            

        

        

       

            To add non XDoclet property mappings, create a file named

                hibernate-properties-Vehicle.xml

            containing the additional properties and place it in your merge dir.

       

        

        

        

        

        

        

        

        

    

Demo.java

/*

 * Hibernate - 继承映射(每个子类一个表)

 * 创建日期 2005-4-9

 * @author javamxj（分享java快乐）

 * @link  Blog: htpp://javamxj.mblogger.cn 

 *              htpp://blog.csdn.net/javamxj/

 */

package javamxj.inheritance.two;

import java.util.Iterator;

import java.util.List;

import net.sf.hibernate.HibernateException;

import net.sf.hibernate.Session;

import net.sf.hibernate.SessionFactory;

import net.sf.hibernate.Transaction;

import net.sf.hibernate.cfg.Configuration;

public class Demo {

public static void main(String[] args) {

try {

new Demo();

} catch (HibernateException he) {

he.printStackTrace();

}

}

public Demo() throws HibernateException {

SessionFactory sf = new Configuration().configure()

.buildSessionFactory();

Session sess = sf.openSession();

Transaction tx = null;

try {

tx = sess.beginTransaction();

Car car = new Car();

car.setName("奇瑞QQ");

car.setSeat("4人");

sess.save(car);

Truck truck = new Truck();

truck.setName("一汽解放");

truck.setLoad("10吨");

sess.save(truck);

tx.commit();

} catch (HibernateException e) {

if (tx != null)

tx.rollback();

throw e;

} finally {

sess.close();

}

sess = sf.openSession();

tx = null;

try {

tx = sess.beginTransaction();

List pets = sess.find("from " + Vehicle.class.getName());

for (Iterator it = pets.iterator(); it.hasNext();) {

Vehicle vehicle = (Vehicle) it.next();

System.out.println("车型 " + vehicle.getName()

+ " its class is: " + vehicle.getClass().getName());

}

tx.commit();

} catch (HibernateException e) {

if (tx != null)

tx.rollback();

throw e;

} finally {

sess.close();

}

}

}