package org.drools.examples.petstore; /* * $Id: ShoppingCart.java,v 1.2 2004/09/17 00:37:57 mproctor Exp $ * * Copyright 2001-2003 (C) The Werken Company. All Rights Reserved. * * Redistribution and use of this software and associated documentation * ("Software"), with or without modification, are permitted provided that the * following conditions are met: * * 1. Redistributions of source code must retain copyright statements and * notices. Redistributions must also contain a copy of this document. * * 2. Redistributions 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. * * 3. The name "drools" must not be used to endorse or promote products derived * from this Software without prior written permission of The Werken Company. * For written permission, please contact bob@werken.com. * * 4. Products derived from this Software may not be called "drools" nor may * "drools" appear in their names without prior written permission of The Werken * Company. "drools" is a trademark of The Werken Company. * * 5. Due credit should be given to The Werken Company. (http://werken.com/) * * THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; public class ShoppingCart { private List items; private double discount; private Map states; private static String newline = System.getProperty( "line.separator" ); public ShoppingCart() { states = new HashMap( ); this.items = new ArrayList( ); this.discount = 0; } public boolean getState(String state) { if ( states.containsKey( state ) ) { return ( ( Boolean ) states.get( state ) ).booleanValue( ); } else { return false; } } public void setState(String state, boolean value) { states.put( state, new Boolean( value ) ); } public void setDiscount(double discount) { this.discount = discount; } public double getDiscount() { return this.discount; } public void addItem(CartItem item) { this.items.add( item ); } public List getItems() { return this.items; } public List getItems(String name) { ArrayList matching = new ArrayList( ); Iterator itemIter = getItems( ).iterator( ); CartItem eachItem = null; while ( itemIter.hasNext( ) ) { eachItem = ( CartItem ) itemIter.next( ); if ( eachItem.getName( ).equals( name ) ) { matching.add( eachItem ); } } return matching; } public double getGrossCost() { Iterator itemIter = getItems( ).iterator( ); CartItem eachItem = null; double cost = 0.00; while ( itemIter.hasNext( ) ) { eachItem = ( CartItem ) itemIter.next( ); cost += eachItem.getCost( ); } return cost; } public double getDiscountedCost() { double cost = getGrossCost( ); double discount = getDiscount( ); double discountedCost = cost * ( 1 - discount ); return discountedCost; } public String toString() { StringBuffer buf = new StringBuffer( ); buf.append( "ShoppingCart:" + newline ); Iterator itemIter = getItems( ).iterator( ); while ( itemIter.hasNext( ) ) { buf.append( "\t" + itemIter.next( ) + newline ); } buf.append( "gross total=" + getGrossCost( ) + newline ); buf.append( "discounted total=" + getDiscountedCost( ) + newline ); return buf.toString( ); } }
