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1   /*
2   * Copyright 2004 The Apache Software Foundation
3   *
4   * Licensed under the Apache License, Version 2.0 (the "License");
5   * you may not use this file except in compliance with the License.
6   * You may obtain a copy of the License at
7   *
8   *     http://www.apache.org/licenses/LICENSE-2.0
9   *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16  package sessions;
17  
18  import javax.servlet.http.*;
19  import java.util.Vector;
20  import java.util.Enumeration;
21  
22  public class DummyCart {
23      Vector v = new Vector();
24      String submit = null;
25      String item = null;
26      
27      private void addItem(String name) {
28  	v.addElement(name);
29      }
30  
31      private void removeItem(String name) {
32  	v.removeElement(name);
33      }
34  
35      public void setItem(String name) {
36  	item = name;
37      }
38      
39      public void setSubmit(String s) {
40  	submit = s;
41      }
42  
43      public String[] getItems() {
44  	String[] s = new String[v.size()];
45  	v.copyInto(s);
46  	return s;
47      }
48      
49      public void processRequest(HttpServletRequest request) {
50  	// null value for submit - user hit enter instead of clicking on 
51  	// "add" or "remove"
52  	if (submit == null) 
53  	    addItem(item);
54  
55  	if (submit.equals("add"))
56  	    addItem(item);
57  	else if (submit.equals("remove")) 
58  	    removeItem(item);
59  	
60  	// reset at the end of the request
61  	reset();
62      }
63  
64      // reset
65      private void reset() {
66  	submit = null;
67  	item = null;
68      }
69  }