goodcartbiz.java

网上购物系统 主要实现订单查询 订单各种操作 等

package eshopsys.cart.biz;
import eshopsys.cart.biz.*;
import eshopsys.good.model.GoodEntity;
import eshopsys.tools.base.BaseEntity;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.*;

public class GoodCartBiz {
	public ArrayList<CartGoodEntity> cart=new ArrayList<CartGoodEntity>();
	///////////////////////////////////////////////
	public GoodCartBiz()
	{
		//cart=new ArrayList<CartGoodEntity>();
	}
	//////////////////////////////////////////////
	public void addInCart(CartGoodEntity cartgood)
	{
		int goodTypeCount=cart.size();
		CartGoodEntity cgood=null;
		
		if(goodTypeCount>0)
		{
			int findIndex=findInCart(cartgood);
			if(findIndex>=0)
			{
				//在原来记录中修改
				cgood=(CartGoodEntity)cart.get(findIndex);
				cgood.setGoodNum(cgood.getGoodNum()+cartgood.getGoodNum());
				cart.remove(findIndex);
				cart.add(cgood);
			}
			else
			{
				//在新增记录
				cart.add(cartgood);
			}
		}
		else
		{//在新增记录
			cart.add(cartgood);
		}
	}
//////////////////////////////////////////////
//////////////////////////////////////////////
	public void updateInCart(CartGoodEntity cartgood)
	{
		int goodTypeCount=cart.size();
		CartGoodEntity cgood=null;
		
		if(goodTypeCount>0)
		{
			int findIndex=findInCart(cartgood);
			if(findIndex>=0)
			{
				//更新原来的记录
				cart.remove(findIndex);
				cart.add(cartgood);
			}
			else
			{
				//在新增记录
				cart.add(cartgood);
			}
		}
	}
//////////////////////////////////////////////
	public void deleteInCart(CartGoodEntity cartgood)
	{
		int goodTypeCount=cart.size();
		CartGoodEntity cgood=null;
		
		if(goodTypeCount>0)
		{
			int findIndex=findInCart(cartgood);
			if(findIndex>=0)
			{
				//在原来记录删除
				cart.remove(findIndex);
			}
		}
	}
	
    ////////////////////////////////////////////////
    ////////////////////////////////////////////////
	public int findInCart(CartGoodEntity cartgood)
	{
		int index=-1;
		int goodTypeCount=cart.size();
		CartGoodEntity cgood=null;
		
		for(int i=0;i<goodTypeCount;i++)
			{cgood=(CartGoodEntity)cart.get(i);
			 if(cgood.goodId==cartgood.goodId)
			     {index=i;break;}
			}
		
		
		return index;
	}
	public CartGoodEntity[] GetCartList()
	{
		 int goodTypeCount=cart.size();
		 CartGoodEntity[] cartgoods = null;
  	     if (goodTypeCount > 0) {
  	    	  cartgoods= new CartGoodEntity[goodTypeCount];
		      cart.toArray(cartgoods);
		    }
		    
		    return cartgoods;

	}
}