mytestdaoimpl.java

Spring2.0宝典

/*******************************************************************
<br>Copyright (C), 2004-2006, yeeku.H.Lee
<br>Program Name:MyTestDaoImpl
<br>Author:yeeku.H.lee [e-mail]
<br>Version:1.0
<br>This program is protected by copyright laws.
<br>Date: 
*******************************************************************/

package lee;

import java.util.Collection;
import java.util.List;

import org.hibernate.SessionFactory;
import org.hibernate.HibernateException;
import org.hibernate.Session;

import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.HibernateCallback;

//完全可以不需要MyTestDao接口,直接使用类,但这样是面向接口的编程。
public class MyTestDaoImpl implements MyTestDao
{

    private SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory)
	{
        this.sessionFactory = sessionFactory;
    }

    public Collection findAllMyTest()
	{
        HibernateTemplate hibernateTemplate = new HibernateTemplate(this.sessionFactory);

        /*
		  HibernateCallback的内部类方式可在任何Hibernate数据访问中使用
		  对于简单的一步操作,如简单的load,savaOrUpdate则不必使用这种HibernateCallback匿名内部类的方式
		*/
		return (Collection) hibernateTemplate.execute( new HibernateCallback()
			{
                public Object doInHibernate(Session session) throws HibernateException
				{
                    List result = session.createQuery("from MyTest")
                           .list();
                    return result;
                }
            });
    }
}