orderhibernatedao.java

用spring+struts+hibernate实现的关于订单的例子

package cn.hxex.order.dao.hibernate;

import java.sql.SQLException;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import cn.hxex.order.bo.Order;
import cn.hxex.order.dao.IOrderDAO;

public class OrderHibernateDAO extends HibernateDaoSupport implements IOrderDAO{

	public Order findOrderById(final int id) {
		// TODO Auto-generated method stub
		Order order=(Order)super.getHibernateTemplate().load(Order.class, new Integer(id));
		
		return order;
	}

	public List findOrdesPlaceByUser(final String placedBy) {
		// TODO Auto-generated method stub
		return getHibernateTemplate().executeFind(new HibernateCallback(){

			public Object doInHibernate(Session session)
					throws HibernateException, SQLException {
				// TODO Auto-generated method stub
				StringBuffer sb=new StringBuffer(100);
				sb.append("select distinct order ");
				sb.append("from Order order ");
				sb.append("join order.orderLineItems orderLineItems ");
				sb.append("where order.placedBy=:placedBy");
				sb.append("order by order.id");
				
				Query query=session.createQuery(sb.toString());
				query.setString("placedBy", placedBy);
				List list=query.list();
				return list;
			}
			
		});
	}

	public Order saveOrder(final Order order) {
		// TODO Auto-generated method stub
		super.getHibernateTemplate().save(order);
		return order;
	}

}