001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package sessions; 018 019 import javax.servlet.http.*; 020 import java.util.Vector; 021 022 public class DummyCart { 023 Vector v = new Vector(); 024 String submit = null; 025 String item = null; 026 027 private void addItem(String name) { 028 v.addElement(name); 029 } 030 031 private void removeItem(String name) { 032 v.removeElement(name); 033 } 034 035 public void setItem(String name) { 036 item = name; 037 } 038 039 public void setSubmit(String s) { 040 submit = s; 041 } 042 043 public String[] getItems() { 044 String[] s = new String[v.size()]; 045 v.copyInto(s); 046 return s; 047 } 048 049 public void processRequest(HttpServletRequest request) { 050 // null value for submit - user hit enter instead of clicking on 051 // "add" or "remove" 052 if (submit == null) 053 addItem(item); 054 055 if (submit.equals("add")) 056 addItem(item); 057 else if (submit.equals("remove")) 058 removeItem(item); 059 060 // reset at the end of the request 061 reset(); 062 } 063 064 // reset 065 private void reset() { 066 submit = null; 067 item = null; 068 } 069 }