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1   /* 
2    * Copyright (c) 2007, Fraunhofer-Gesellschaft
3    * All rights reserved.
4    * 
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions are
7    * met:
8    * 
9    * (1) Redistributions of source code must retain the above copyright
10   *     notice, this list of conditions and the disclaimer at the end.
11   *     Redistributions in binary form must reproduce the above copyright
12   *     notice, this list of conditions and the following disclaimer in
13   *     the documentation and/or other materials provided with the
14   *     distribution.
15   * 
16   * (2) Neither the name of Fraunhofer nor the names of its
17   *     contributors may be used to endorse or promote products derived
18   *     from this software without specific prior written permission.
19   * 
20   * DISCLAIMER
21   * 
22   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33   *  
34   */
35  package org.ogf.graap.wsag.server.api;
36  
37  import java.util.HashMap;
38  import java.util.Map;
39  import java.util.UUID;
40  
41  /**
42   * WsagSessionManager
43   * 
44   * @author Oliver Waeldrich
45   * 
46   */
47  public class WsagSessionManager
48  {
49  
50      private static Map<String, WsagSession> sessions = new HashMap<String, WsagSession>();
51  
52      /**
53       * Creates a new WSAG4J session
54       * 
55       * @return the session
56       */
57      public static synchronized WsagSession createSession()
58      {
59  
60          String id = UUID.randomUUID().toString();
61  
62          while ( sessions.containsKey( id ) )
63          {
64              id = UUID.randomUUID().toString();
65          }
66  
67          WsagSession session = new WsagSession( id );
68          sessions.put( id, session );
69  
70          return session;
71      }
72  
73      /**
74       * Returns a WSAG4J session with the given id.
75       * 
76       * @param id
77       *            the session id
78       * 
79       * @return the WSAG4J session
80       */
81      public static WsagSession getSession( String id )
82      {
83          return sessions.get( id );
84      }
85  }