CallbackService


1   /**
2    * Redistribution and use of this software and associated documentation
3    * ("Software"), with or without modification, are permitted provided
4    * that the following conditions are met:
5    *
6    * 1. Redistributions of source code must retain copyright
7    *    statements and notices.  Redistributions must also contain a
8    *    copy of this document.
9    *
10   * 2. Redistributions in binary form must reproduce the
11   *    above copyright notice, this list of conditions and the
12   *    following disclaimer in the documentation and/or other
13   *    materials provided with the distribution.
14   *
15   * 3. The name "Exolab" must not be used to endorse or promote
16   *    products derived from this Software without prior written
17   *    permission of Exoffice Technologies.  For written permission,
18   *    please contact info@exolab.org.
19   *
20   * 4. Products derived from this Software may not be called "Exolab"
21   *    nor may "Exolab" appear in their names without prior written
22   *    permission of Exoffice Technologies. Exolab is a registered
23   *    trademark of Exoffice Technologies.
24   *
25   * 5. Due credit should be given to the Exolab Project
26   *    (http://www.exolab.org/).
27   *
28   * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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33   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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37   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39   * OF THE POSSIBILITY OF SUCH DAMAGE.
40   *
41   * Copyright 2004-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
42   *
43   * $Id: CallbackService.java,v 1.2 2005/04/02 13:52:35 tanderson Exp $
44   */
45  package org.exolab.jms.net;
46  
47  import java.util.List  ;
48  
49  
50  /**
51   * Service which allows clients to register a callback.
52   *
53   * @version     $Revision: 1.2 $ $Date: 2005/04/02 13:52:35 $
54   * @author      <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
55   */
56  public interface CallbackService {
57  
58      /**
59       * Register a callback.
60       *
61       * @param callback the callback to register
62       */
63      void addCallback(Callback callback);
64  
65      /**
66       * De-register a callback.
67       *
68       * @param callback the callback to remove
69       */
70      void removeCallback(Callback callback);
71  
72      /**
73       * Returns a list of the registered callbacks.
74       *
75       * @return a list of the registered callbacks
76       */
77      List   getCallbacks();
78  
79      /**
80       * Invokes each callback.
81       *
82       * @param object the object to pass to the callback
83       */
84      void invoke(Object   object);
85  
86  }
87
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