saveorder.java

利用javaEE开发而实现图书的购买的一个系统

package org.yangkang.bookshop.dao.impl;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.yangkang.bookshop.dao.BaseDao;
import org.yangkang.bookshop.dao.IsaveOrder;
import org.yangkang.bookshop.vo.Order;

public class SaveOrder extends BaseDao implements IsaveOrder {

	@SuppressWarnings("unchecked")
	public Order saveOrder(Order order) {	
		Session session = getSession();
		Transaction tx = session.beginTransaction();
		session.save(order);
		tx.commit();		
		String hql = "from Order o where o.user.userId=? and o.orderdate=?";
		Query query = session.createQuery(hql);
		query.setParameter(0, order.getUser().getUserId());
		query.setParameter(1,order.getOrderdate());
	    List list = query.list();
	    if(list.size()!=0){
	    	order = (Order) list.get(0);
	    }
		session.close();
		return order;
	}

}