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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  package org.apache.mina.handler.multiton;
21  
22  import org.apache.mina.common.IdleStatus;
23  import org.apache.mina.common.IoSession;
24  import org.apache.mina.util.SessionUtil;
25  
26  /**
27   * Adapter class for implementors of the {@link SingleSessionIoHandler}
28   * interface. The session to which the handler is assigned is accessible
29   * through the {@link #getSession()} method.
30   * 
31   * @author The Apache Directory Project (mina-dev@directory.apache.org)
32   * @version $Rev: 555855 $, $Date: 2007-07-13 05:19:00 +0200 (Fri, 13 Jul 2007) $
33   */
34  public class SingleSessionIoHandlerAdapter implements SingleSessionIoHandler {
35  
36      /**
37       * The session to which the handler is assigned.
38       */
39      private final IoSession session;
40  
41      /**
42       * Creates a new instance that is assigned to the passed in session.
43       *
44       * @param session the session to which the handler is assigned
45       */
46      public SingleSessionIoHandlerAdapter(IoSession session) {
47          if (session == null) {
48              throw new NullPointerException("session");
49          }
50          this.session = session;
51      }
52  
53      /**
54       * Retrieves the session to which this handler is assigned.
55       *
56       * @return the session
57       */
58      protected IoSession getSession() {
59          return session;
60      }
61  
62      public void exceptionCaught(Throwable th) throws Exception {
63      }
64  
65      public void messageReceived(Object message) throws Exception {
66      }
67  
68      public void messageSent(Object message) throws Exception {
69      }
70  
71      public void sessionClosed() throws Exception {
72      }
73  
74      public void sessionCreated() throws Exception {
75          SessionUtil.initialize(getSession());
76      }
77  
78      public void sessionIdle(IdleStatus status) throws Exception {
79      }
80  
81      public void sessionOpened() throws Exception {
82      }
83  }