SrvSessionList


1   /*
2    * Copyright (C) 2005 Alfresco, Inc.
3    *
4    * Licensed under the Mozilla Public License version 1.1 
5    * with a permitted attribution clause. You may obtain a
6    * copy of the License at
7    *
8    *   http://www.alfresco.org/legal/license.txt
9    *
10   * Unless required by applicable law or agreed to in writing,
11   * software distributed under the License is distributed on an
12   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13   * either express or implied. See the License for the specific
14   * language governing permissions and limitations under the
15   * License.
16   */
17  package org.alfresco.filesys.server;
18  
19  import java.util.Enumeration  ;
20  import java.util.Hashtable  ;
21  
22  /**
23   * Server Session List Class
24   */
25  public class SrvSessionList
26  {
27  
28      // Session list
29  
30      private Hashtable  <Integer  , SrvSession> m_sessions;
31  
32      /**
33       * Class constructor
34       */
35      public SrvSessionList()
36      {
37          m_sessions = new Hashtable  <Integer  , SrvSession>();
38      }
39  
40      /**
41       * Return the number of sessions in the list
42       * 
43       * @return int
44       */
45      public final int numberOfSessions()
46      {
47          return m_sessions.size();
48      }
49  
50      /**
51       * Add a session to the list
52       * 
53       * @param sess SrvSession
54       */
55      public final void addSession(SrvSession sess)
56      {
57          m_sessions.put(sess.getSessionId(), sess);
58      }
59  
60      /**
61       * Find the session using the unique session id
62       * 
63       * @param id int
64       * @return SrvSession
65       */
66      public final SrvSession findSession(int id)
67      {
68          return findSession(id);
69      }
70  
71      /**
72       * Find the session using the unique session id
73       * 
74       * @param id Integer
75       * @return SrvSession
76       */
77      public final SrvSession findSession(Integer   id)
78      {
79          return m_sessions.get(id);
80      }
81  
82      /**
83       * Remove a session from the list
84       * 
85       * @param id int
86       * @return SrvSession
87       */
88      public final SrvSession removeSession(int id)
89      {
90          return removeSession(new Integer  (id));
91      }
92  
93      /**
94       * Remove a session from the list
95       * 
96       * @param sess SrvSession
97       * @return SrvSession
98       */
99      public final SrvSession removeSession(SrvSession sess)
100     {
101         return removeSession(sess.getSessionId());
102     }
103 
104     /**
105      * Remove a session from the list
106      * 
107      * @param id Integer
108      * @return SrvSession
109      */
110     public final SrvSession removeSession(Integer   id)
111     {
112 
113         // Find the required session
114 
115         SrvSession sess = findSession(id);
116 
117         // Remove the session and return the removed session
118 
119         m_sessions.remove(id);
120         return sess;
121     }
122 
123     /**
124      * Enumerate the session ids
125      * 
126      * @return Enumeration<Integer>
127      */
128     public final Enumeration  <Integer  > enumerate()
129     {
130         return m_sessions.keys();
131     }
132 }
133
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