shangdian/src/com/util/Cart.java

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package com.util;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import com.orm.Tshipin;
import com.orm.TdingdanItem;

public class Cart
{

	protected Map<Integer, TdingdanItem> items;
	public Cart()
	{

		if (items == null)
		{
			items = new HashMap<Integer, TdingdanItem>();
		}
	}
	public void addGoods(Integer goodsId, TdingdanItem orderItem)
	{
		if (items.containsKey(goodsId))
		{
			TdingdanItem _dingdanItem = items.get(goodsId);
			_dingdanItem.setshipinShuliang(_dingdanItem.getshipinShuliang()+ _dingdanItem.getshipinShuliang());
			items.put(goodsId, _dingdanItem);
		} 
		else
		{

			items.put(goodsId, orderItem);
		}
	}
	public void delGoods(Integer goodsId)
	{
		items.remove(goodsId);
	}
	public void updateCart(Integer goodsId, int quantity)
	{

		TdingdanItem orderItem = items.get(goodsId);
		orderItem.setshipinShuliang(quantity);
		items.put(goodsId, orderItem);
	}
	public int getTotalPrice()
	{

		int totalPrice = 0;
		for (Iterator it = items.values().iterator(); it.hasNext();)
		{

			TdingdanItem orderItem = (TdingdanItem) it.next();
			Tshipin goods = orderItem.getshipin();
			int quantity = orderItem.getshipinShuliang();
			totalPrice += goods.getshipinJiage()* quantity;
		}
		return totalPrice;
	}