01: /*
02: * Copyright 2004 The Apache Software Foundation
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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: }
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