CausalityChunk


1   /**
2    * Dream
3    * Copyright (C) 2003-2004 INRIA Rhone-Alpes
4    *
5    * This library is free software; you can redistribute it and/or
6    * modify it under the terms of the GNU Lesser General Public
7    * License as published by the Free Software Foundation; either
8    * version 2 of the License, or (at your option) any later version.
9    *
10   * This library is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   * Lesser General Public License for more details.
14   *
15   * You should have received a copy of the GNU Lesser General Public
16   * License along with this library; if not, write to the Free Software
17   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18   *
19   * Contact : dream@objectweb.org
20   *
21   * Initial developer(s): Matthieu Leclercq
22   * Contributor(s):
23   */
24  
25  package org.objectweb.dream.protocol.causality;
26  
27  import org.objectweb.dream.message.ChunkType;
28  import org.objectweb.dream.message.ChunkTypeImpl;
29  
30  /**
31   * Chunk interface for causality sorted messages. The causality process requires
32   * an identifier of the sending process, of the receiver process, and a stamp
33   * 
34   * @see org.objectweb.dream.protocol.causality.MatrixClock
35   */
36  public interface CausalityChunk
37  {
38  
39    /** The default name for chunks of this type */
40    String      DEFAULT_NAME = "causalityChunk";
41  
42    /** The Chunk type of chunks that implements this interface. */
43    ChunkType TYPE         = new ChunkTypeImpl(CausalityChunk.class,
44                               CausalityChunkImpl.class);
45  
46    /**
47     * Returns the causality stamp of this chunk
48     * 
49     * @return the causality stamp of this chunk
50     */
51    Object   getCausalityStamp();
52  
53    /**
54     * Set the causality stamp of this chunk
55     * 
56     * @param stamp the stamp
57     */
58    void setCausalityStamp(Object   stamp);
59  }
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