shoppingcartitem.java

《基于Eclipse的开源框架技术与实战》[第5章]随书源码

package com.free.struts.storefront.framework;

import com.free.struts.storefront.catalog.view.ItemDetailView;

/**
 * <p>Title: Eclipse Plugin Development</p>
 * <p>Description: Free download</p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: Free</p>
 * @author gan.shu.man
 * @version 1.0
 */

public class ShoppingCartItem {
	public void setItem(ItemDetailView newItem) {
		item = newItem;
		calculateExtendedPrice();
	}

	public void setExtendedPrice(double newPrice) {
		extendedPrice = newPrice;
	}

	public String getDescription() {
		return item.getDescription();
	}

	public String getId() {
		return item.getId();
	}

	public String getName() {
		return item.getName();
	}

	public ShoppingCartItem(ItemDetailView item, int qty) {
		this.item = item;
		this.quantity = qty;
		calculateExtendedPrice();
	}

	public int getQuantity() {
		return quantity;
	}

	public void setQuantity(int newQuantity) {
		quantity = newQuantity;
		calculateExtendedPrice();
	}

	public ItemDetailView getItem() {
		return item;
	}

	public Double getUnitPrice() {
		return item.getUnitPrice();
	}

	public double getExtendedPrice() {
		return extendedPrice;
	}

	private void calculateExtendedPrice() {
		if (item.getUnitPrice() != null) {
			extendedPrice = item.getUnitPrice().doubleValue() * getQuantity();
		}
	}

	// Extended price is unit price * qty
	private double extendedPrice = 0.0;

	private ItemDetailView item = null;

	// Default qty to 1
	private int quantity = 1;
}