01: /*
02: * $Id: LoggedOn.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "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: package org.apache.struts.webapp.example2;
23:
24: import java.io.IOException;
25: import javax.faces.FacesException;
26: import javax.faces.context.FacesContext;
27: import org.apache.commons.logging.Log;
28: import org.apache.commons.logging.LogFactory;
29:
30: /**
31: * <p>Backing bean for the <code>loggedon.jsp</code> page.</p>
32: */
33:
34: public class LoggedOn {
35:
36: // ------------------------------------------------------ Instance Variables
37:
38: private static final Log log = LogFactory.getLog(LoggedOn.class);
39:
40: // ----------------------------------------------------------------- Actions
41:
42: /**
43: * <p>Begin the process of logging off.</p>
44: */
45: public String logoff() {
46:
47: FacesContext context = FacesContext.getCurrentInstance();
48: if (log.isDebugEnabled()) {
49: log.debug("logoff(" + context + ")");
50: }
51: forward(context, "/logoff.do");
52: return (null);
53:
54: }
55:
56: // --------------------------------------------------------- Private Methods
57:
58: /**
59: * <p>Forward to the specified URL and mark this response as having
60: * been completed.</p>
61: *
62: * @param context <code>FacesContext</code> for the current request
63: * @param url Context-relative URL to forward to
64: *
65: * @exception FacesException if any error occurs
66: */
67: private void forward(FacesContext context, String url) {
68:
69: try {
70: context.getExternalContext().dispatch(url);
71: } catch (IOException e) {
72: throw new FacesException(e);
73: } finally {
74: context.responseComplete();
75: }
76:
77: }
78:
79: }
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