01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18:
19: package org.apache.lenya.util;
20:
21: /**
22: * A Listener which store the session object in a HashMap on creation and
23: * remove it if the session is destroyed.
24: *
25: * @version $Id: SessionListener.java 473861 2006-11-12 03:51:14Z gregor $
26: */
27:
28: import javax.servlet.http.*;
29: import java.util.WeakHashMap;
30:
31: public class SessionListener implements HttpSessionListener {
32:
33: private static WeakHashMap allSessions = new WeakHashMap();
34:
35: public void sessionCreated(HttpSessionEvent se) {
36:
37: HttpSession session = se.getSession();
38: String sessionID = session.getId();
39: allSessions.put(sessionID, session);
40: }
41:
42: public void sessionDestroyed(HttpSessionEvent se) {
43: HttpSession session = se.getSession();
44: String sessionID = session.getId();
45: if (allSessions.containsKey(sessionID)) {
46: allSessions.remove(sessionID);
47: }
48: }
49:
50: public WeakHashMap getAllSessions() {
51: return allSessions;
52: }
53: }
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