Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
SessionListener |
|
| 1.2;1,2 |
1 | package org.apache.turbine.services.session; | |
2 | ||
3 | ||
4 | /* | |
5 | * Licensed to the Apache Software Foundation (ASF) under one | |
6 | * or more contributor license agreements. See the NOTICE file | |
7 | * distributed with this work for additional information | |
8 | * regarding copyright ownership. The ASF licenses this file | |
9 | * to you under the Apache License, Version 2.0 (the | |
10 | * "License"); you may not use this file except in compliance | |
11 | * with the License. You may obtain a copy of the License at | |
12 | * | |
13 | * http://www.apache.org/licenses/LICENSE-2.0 | |
14 | * | |
15 | * Unless required by applicable law or agreed to in writing, | |
16 | * software distributed under the License is distributed on an | |
17 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
18 | * KIND, either express or implied. See the License for the | |
19 | * specific language governing permissions and limitations | |
20 | * under the License. | |
21 | */ | |
22 | ||
23 | ||
24 | import java.io.Serializable; | |
25 | ||
26 | import javax.servlet.http.HttpSessionActivationListener; | |
27 | import javax.servlet.http.HttpSessionEvent; | |
28 | import javax.servlet.http.HttpSessionListener; | |
29 | ||
30 | import org.apache.turbine.services.TurbineServices; | |
31 | ||
32 | /** | |
33 | * This class is a listener for both session creation and destruction, | |
34 | * and for session activation and passivation. It must be configured | |
35 | * via your web application's <code>web.xml</code> deployment | |
36 | * descriptor as follows for the container to call it: | |
37 | * | |
38 | * <pre> | |
39 | * <listener> | |
40 | * <listener-class> | |
41 | * org.apache.turbine.session.SessionListener | |
42 | * </listener-class> | |
43 | * </listener> | |
44 | * </pre> | |
45 | * | |
46 | * <code><listener></code> elements can occur between | |
47 | * <code><context-param></code> and <code><servlet></code> | |
48 | * elements in your deployment descriptor. | |
49 | * | |
50 | * The {@link #sessionCreated(HttpSessionEvent)} callback will | |
51 | * automatically add an instance of this listener to any newly created | |
52 | * <code>HttpSession</code> for detection of session passivation and | |
53 | * re-activation. | |
54 | * | |
55 | * @since 2.3 | |
56 | * @version $Id: SessionListener.java 1773378 2016-12-09 13:19:59Z tv $ | |
57 | * @author <a href="mailto:quintonm@bellsouth.net">Quinton McCombs</a> | |
58 | * @author <a href="mailto:dlr@apache.org">Daniel Rall</a> | |
59 | * @see javax.servlet.http.HttpSessionListener | |
60 | */ | |
61 | 0 | public class SessionListener |
62 | implements HttpSessionListener, HttpSessionActivationListener, Serializable | |
63 | { | |
64 | // ---- HttpSessionListener implementation ----------------------------- | |
65 | ||
66 | /** | |
67 | * Serial version. | |
68 | */ | |
69 | private static final long serialVersionUID = -8083730704842809870L; | |
70 | ||
71 | /** | |
72 | * The session service. | |
73 | */ | |
74 | private SessionService sessionService; | |
75 | ||
76 | /** | |
77 | * Lazy initialization | |
78 | * | |
79 | * @return the sessionService | |
80 | */ | |
81 | private SessionService getSessionService() | |
82 | { | |
83 | // don't care about synchronization, lookup is cheap | |
84 | 0 | if (sessionService == null) |
85 | { | |
86 | 0 | sessionService = (SessionService)TurbineServices.getInstance().getService(SessionService.SERVICE_NAME); |
87 | } | |
88 | ||
89 | 0 | return sessionService; |
90 | } | |
91 | ||
92 | /** | |
93 | * Called by the servlet container when a new session is created | |
94 | * | |
95 | * @param event Session creation event. | |
96 | */ | |
97 | @Override | |
98 | public void sessionCreated(HttpSessionEvent event) | |
99 | { | |
100 | 0 | getSessionService().addSession(event.getSession()); |
101 | 0 | event.getSession().setAttribute(getClass().getName(), this); |
102 | 0 | } |
103 | ||
104 | /** | |
105 | * Called by the servlet container when a session is destroyed | |
106 | * | |
107 | * @param event Session destruction event. | |
108 | */ | |
109 | @Override | |
110 | public void sessionDestroyed(HttpSessionEvent event) | |
111 | { | |
112 | 0 | getSessionService().removeSession(event.getSession()); |
113 | 0 | } |
114 | ||
115 | ||
116 | // ---- HttpSessionActivationListener implementation ------------------- | |
117 | ||
118 | /** | |
119 | * Called by the servlet container when an existing session is | |
120 | * (re-)activated. | |
121 | * | |
122 | * @param event Session activation event. | |
123 | */ | |
124 | @Override | |
125 | public void sessionDidActivate(HttpSessionEvent event) | |
126 | { | |
127 | 0 | getSessionService().addSession(event.getSession()); |
128 | 0 | } |
129 | ||
130 | /** | |
131 | * Called by the servlet container when a an existing session is | |
132 | * passivated. | |
133 | * | |
134 | * @param event Session passivation event. | |
135 | */ | |
136 | @Override | |
137 | public void sessionWillPassivate(HttpSessionEvent event) | |
138 | { | |
139 | 0 | getSessionService().removeSession(event.getSession()); |
140 | 0 | } |
141 | } |