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Java > Open Source Codes > org > mr > kernel > security > SessionsList


1 /*
2  * Copyright 2002 by
3  * <a HREF="http://www.coridan.com">Coridan</a>
4  * <a HREF="mailto: support@coridan.com ">support@coridan.com</a>
5  *
6  * The contents of this file are subject to the Mozilla Public License Version
7  * 1.1 (the "License"); you may not use this file except in compliance with the
8  * License. You may obtain a copy of the License at
9  * http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is "MantaRay" (TM).
17  *
18  * The Initial Developer of the Original Code is Shirley Sasson.
19  * Portions created by the Initial Developer are Copyright (C) 2006
20  * Coridan Inc. All Rights Reserved.
21  *
22  * Contributor(s): all the names of the contributors are added in the source
23  * code where applicable.
24  *
25  * Alternatively, the contents of this file may be used under the terms of the
26  * LGPL license (the "GNU LESSER GENERAL PUBLIC LICENSE"), in which case the
27  * provisions of LGPL are applicable instead of those above. If you wish to
28  * allow use of your version of this file only under the terms of the LGPL
29  * License and not to allow others to use your version of this file under
30  * the MPL, indicate your decision by deleting the provisions above and
31  * replace them with the notice and other provisions required by the LGPL.
32  * If you do not delete the provisions above, a recipient may use your version
33  * of this file under either the MPL or the GNU LESSER GENERAL PUBLIC LICENSE.
34  
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Lesser General Public License as published by the Free Software Foundation;
39  * either version 2.1 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
43  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
44  * License for more details.
45  */
46
47 package org.mr.kernel.security;
48
49 import org.mr.core.configuration.ConfigManager;
50 import org.mr.MantaAgent;
51
52 import java.util.Vector JavaDoc;
53
54 import org.mr.kernel.security.authentication.MaximumNumberOfSessionsPerUserReached;
55
56 /**
57  * Holds a list of SessionIDs.
58  *
59  * @version 1.0
60  * @since Mar 27, 2006
61  * @author Shirley Sasson
62  *
63  */
64 public class SessionsList implements SecurityConfigurationPaths, SecurityConstants {
65     private Vector JavaDoc _list;
66     private int _maximalSessionsPerUser;
67
68     /**
69      * Constructs a new instance of SessionsList.
70      *
71      */
72     public SessionsList(){
73         ConfigManager config = MantaAgent.getInstance().getSingletonRepository().getConfigManager();
74         _maximalSessionsPerUser = config.getIntProperty(AUTHENTICATION_MAXIMUM_SESSIONS_PER_USER, DEFAULT_MAXIMAL_SESSIONS_PER_USER);
75         _list = new Vector JavaDoc();
76     }
77
78     /**
79      * Adds the given session to the list of sessions.
80      *
81      * @param sessionID the session to add
82      * @throws MaximumNumberOfSessionsPerUserReached if the user reached the maximal number of sessions
83      */
84     public void addSession(SessionID sessionID) throws MaximumNumberOfSessionsPerUserReached {
85         if (_list.size() < _maximalSessionsPerUser){
86             _list.addElement(sessionID);
87         }
88         else {
89             throw new MaximumNumberOfSessionsPerUserReached(_maximalSessionsPerUser);
90         }
91     }
92
93     /**
94      * Removes a session for the list of sessions.
95      *
96      * @param sessionID the session to remove
97      */
98     public boolean removeSession(SessionID sessionID){
99         return _list.removeElement(sessionID);
100     }
101
102     /**
103      * Returns true if this list of sessions contains the specified session ID.
104      *
105      * @param sessionID the session whose presence in the list of sessions to be tested.
106      * @return true if the specified session is present; false otherwise.
107      */
108     public boolean contains(SessionID sessionID){
109         return _list.contains(sessionID);
110     }
111
112     /**
113      * Returns the number of sessions in the list.
114      *
115      * @return the number of sessions in the list
116      */
117     public int size(){
118         return _list.size();
119     }
120 }
121
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