CodecInputOutput


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.message.codec;
26  
27  import java.io.IOException  ;
28  
29  /**
30   * Gathers an input and an output used by {@link MessageCodec}.
31   */
32  public interface CodecInputOutput
33  {
34    /**
35     * Returns an input that can be used to read data to decode.
36     * 
37     * @return an input.
38     * @throws IOException if the input can't be created.
39     */
40    Object   getInput() throws IOException  ;
41  
42    /**
43     * Set the input. This is usefull for {@link MessageCodec }that use
44     * specialized input. If this object is used to decode another message, the
45     * codec can reuse its specialized input.
46     * 
47     * @param input the new input.
48     */
49    void setInput(Object   input);
50  
51    /**
52     * Returns an output that can be used to write encoded data.
53     * 
54     * @return an output.
55     * @throws IOException if the output can't be created.
56     */
57    Object   getOutput() throws IOException  ;
58  
59    /**
60     * Set the output. This is usefull for {@link MessageCodec }that use
61     * specialized output. If this object is used to decode another message, the
62     * codec can reuse its specialized output.
63     * 
64     * @param output the new output.
65     */
66    void setOutput(Object   output);
67  
68  }
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