ShoppingCartModel.java |
/* * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistribution in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Sun Microsystems, Inc. or the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * This software is provided "AS IS," without a warranty of any * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that Software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of * any nuclear facility. */ package com.sun.j2ee.blueprints.cart.model; import java.io.Serializable; import java.util.Iterator; import java.util.Collection; import com.sun.j2ee.blueprints.util.tracer.Debug; /** * This class represents the model data for the shopping cart. * It is a value object and has fine grained getter methods. */ public class ShoppingCartModel implements Serializable { private Collection items; public ShoppingCartModel(Collection items) { this.items = items; } /** * Class constructor with no arguments, used by the web tier. */ public ShoppingCartModel() {} public int getSize() { if (items != null) return items.size(); else return 0; } /** @return an collection of all the CartItems. */ public Collection getCart() { return items; } /** @return an iterator over all the CartItems. */ public Iterator getItems() { return items.iterator(); } public double getTotalCost() { double total = 0; for (Iterator li = getItems(); li.hasNext(); ) { CartItem item = (CartItem) li.next(); total += item.getTotalCost(); } return total; } /** * copies over the data from the specified shopping cart. Note * that it is a shallow copy. */ public void copy(ShoppingCartModel src) { this.items = src.items; } }
ShoppingCartModel.java |