ObjectManager


1   /*
2    * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3    *
4    * This file is part of Resin(R) Open Source
5    *
6    * Each copy or derived work must preserve the copyright notice and this
7    * notice unmodified.
8    *
9    * Resin Open Source is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * Resin Open Source is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17   * of NON-INFRINGEMENT.  See the GNU General Public License for more
18   * details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with Resin Open Source; if not, write to the
22   *   Free SoftwareFoundation, Inc.
23   *   59 Temple Place, Suite 330
24   *   Boston, MA 02111-1307  USA
25   *
26   * @author Scott Ferguson
27   */
28  
29  package com.caucho.server.cluster;
30  
31  import java.io.IOException  ;
32  import java.io.ObjectInputStream  ;
33  import java.io.ObjectOutputStream  ;
34  
35  /**
36   * Base class for the distributed objects
37   */
38  public interface ObjectManager {
39    /**
40     * Returns the maximum idle time.
41     */
42    public long getMaxIdleTime();
43    
44    /**
45     * Loads the object from the input stream.
46     */
47    public void load(ObjectInputStream   out, Object   object)
48      throws IOException  ;
49    
50    /**
51     * Returns true if the object is empty.
52     */
53    public boolean isEmpty(Object   object)
54      throws IOException  ;
55    
56    /**
57     * Stores the object in the output stream.
58     */
59    public void store(ObjectOutputStream   out, Object   object)
60      throws IOException  ;
61  
62    /**
63     * Notifies that an object is updated.
64     */
65    public void notifyUpdate(String   objectId)
66      throws IOException  ;
67  
68    /**
69     * Notifies an object has been removed.
70     */
71    public void notifyRemove(String   objectId)
72      throws IOException  ;
73  }
74
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