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 java.util.Vector;
020    
021    import javax.servlet.http.HttpServletRequest;
022    
023    public class DummyCart {
024        Vector v = new Vector();
025        String submit = null;
026        String item = null;
027    
028        private void addItem(String name) {
029            v.addElement(name);
030        }
031    
032        private void removeItem(String name) {
033            v.removeElement(name);
034        }
035    
036        public void setItem(String name) {
037            item = name;
038        }
039    
040        public void setSubmit(String s) {
041            submit = s;
042        }
043    
044        public String[] getItems() {
045            String[] s = new String[v.size()];
046            v.copyInto(s);
047            return s;
048        }
049    
050        public void processRequest(HttpServletRequest request) {
051            // null value for submit - user hit enter instead of clicking on
052            // "add" or "remove"
053            if (submit == null)
054                addItem(item);
055    
056            if (submit.equals("add"))
057                addItem(item);
058            else if (submit.equals("remove"))
059                removeItem(item);
060    
061            // reset at the end of the request
062            reset();
063        }
064    
065        // reset
066        private void reset() {
067            submit = null;
068            item = null;
069        }
070    }