shoppingcartimpl.java

企业内部培训系统

package cn.com.tarena.ecport.biz.impl;

import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;

import cn.com.tarena.ecport.biz.IShoppingCart;
import cn.com.tarena.ecport.pojo.OrderLine;
import cn.com.tarena.ecport.pojo.Orders;
import cn.com.tarena.ecport.pojo.Product;

public class ShoppingCartImpl implements IShoppingCart {

	private Orders orders = new Orders();

	public void addProduct(Product product, int amount) {
		Long id = product.getProductid();
		Set orderLines = orders.getOrderlines();
		Iterator<OrderLine> it = orderLines.iterator();
		while (it.hasNext()) {
			OrderLine line = it.next();
			if (line.getProduct().getProductid() == id) {
				line.setAmount(line.getAmount() + 1);
				getTotalPrice();
				return;
			}
		}
		OrderLine orderLine = new OrderLine();
		orderLine.setProduct(product);
		orderLine.setAmount(amount);
		orderLine.setOrders(orders);
//		orderLine.setLineid(id);
		orders.getOrderlines().add(orderLine);
		getTotalPrice();
	}

	public double getTotalPrice() {
		Set orderLines = orders.getOrderlines();
		Iterator<OrderLine> it=orderLines.iterator();
		double cost=0;
		while(it.hasNext()){
			OrderLine line=it.next();
			cost+=(line.getAmount())*(line.getProduct().getBaseprice());
		}
		orders.setCost(cost);
		return cost;
	}

	public void modifyProductAmountById(Long productid, int amount) {
		Set orderLines = orders.getOrderlines();
		Iterator<OrderLine> it=orderLines.iterator();
		while(it.hasNext()){
			OrderLine line=it.next();
			if(line.getProduct().getProductid()==productid){
				line.setAmount(amount);
				getTotalPrice();
			}
		}
	}

	public void removeAllProducts() {
		Set orderLines = orders.getOrderlines();
		orderLines.removeAll(orderLines);
		getTotalPrice();
	}

	public void removeProductById(Long productId) {
		Set orderLines = orders.getOrderlines();
		OrderLine o=null;
		Iterator<OrderLine> it=orderLines.iterator();
		while(it.hasNext()){
			OrderLine line=it.next();
			if(line.getProduct().getProductid()==productId){
				o=line;
			}
		}
		orderLines.remove(o);
	}

	public Orders getOrders() {
		return this.orders;
	}

}