1 /*
2 * $Id: LoggedOn.java 471754 2006-11-06 14:55:09Z husted $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22
23 package org.apache.struts.webapp.example2;
24
25
26 import java.io.IOException;
27 import javax.faces.FacesException;
28 import javax.faces.context.FacesContext;
29 import org.apache.commons.logging.Log;
30 import org.apache.commons.logging.LogFactory;
31
32
33 /**
34 * <p>Backing bean for the <code>loggedon.jsp</code> page.</p>
35 */
36
37 public class LoggedOn {
38
39
40 // ------------------------------------------------------ Instance Variables
41
42
43 private static final Log log = LogFactory.getLog(LoggedOn.class);
44
45
46 // ----------------------------------------------------------------- Actions
47
48
49 /**
50 * <p>Begin the process of logging off.</p>
51 */
52 public String logoff() {
53
54 FacesContext context = FacesContext.getCurrentInstance();
55 if (log.isDebugEnabled()) {
56 log.debug("logoff(" + context + ")");
57 }
58 forward(context, "/logoff.do");
59 return (null);
60
61 }
62
63
64 // --------------------------------------------------------- Private Methods
65
66
67 /**
68 * <p>Forward to the specified URL and mark this response as having
69 * been completed.</p>
70 *
71 * @param context <code>FacesContext</code> for the current request
72 * @param url Context-relative URL to forward to
73 *
74 * @exception FacesException if any error occurs
75 */
76 private void forward(FacesContext context, String url) {
77
78 try {
79 context.getExternalContext().dispatch(url);
80 } catch (IOException e) {
81 throw new FacesException(e);
82 } finally {
83 context.responseComplete();
84 }
85
86 }
87
88
89 }