shoppingcartbizpojoimpl.java

项目是实现网络购物功能

package com.tarena.shoppingcart.biz.impl;

import java.util.Collection;
import com.tarena.shoppingcart.biz.ShoppingCartBiz;
import com.tarena.shoppingcart.dao.ShoppingCartDao;
import com.tarena.shoppingcart.exception.DataAccessException;
import com.tarena.shoppingcart.model.Order;
import com.tarena.shoppingcart.model.User;
import com.tarena.shoppingcart.util.HibernateUtil;
import com.tarena.shoppingcart.util.ShoppingCartFactory;

public class ShoppingCartBizPojoImpl implements ShoppingCartBiz{
	private ShoppingCartDao dao = ShoppingCartFactory.getShoppingCartDao();
	
	public int generateOrder(Order order) throws DataAccessException {
		HibernateUtil.beginTransaction();
		try {
			dao.generateOrder(order);
			HibernateUtil.commitTransaction();
			return order.getId();
		} catch (DataAccessException e) {
			e.printStackTrace();
			HibernateUtil.roolbackTransaction();
			throw e;
		}finally{
			HibernateUtil.closeSession();
		}
	}

	public Collection listProducts() throws DataAccessException {
		try{
			return dao.listProducts();
		}finally{
			HibernateUtil.closeSession();
		}
	}

	public User login(String name, String password) throws DataAccessException {
		try{
			return dao.login(name, password);
		}finally{
			HibernateUtil.closeSession();
		}
	}

}