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Java > Open Source Codes > com > caucho > server > cluster > DistributedObject


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 JavaDoc;
32 import java.io.ObjectInputStream JavaDoc;
33 import java.io.ObjectOutputStream JavaDoc;
34
35 /**
36  * Base class for the session stores.
37  */
38 public interface DistributedObject {
39   /**
40    * Returns the object's id.
41    */
42   public String JavaDoc getId();
43
44   /**
45    * Returns the object's saved CRC value.
46    */
47   public long getCRC();
48   
49   /**
50    * Sets the object's saved CRC value.
51    */
52   public void setCRC(long crc);
53
54   /**
55    * Returns the object's update count
56    */
57   public int getUpdateCount();
58   
59   /**
60    * Sets the object's saved update count
61    */
62   public void setUpdateCount(int count);
63
64   /**
65    * Deserializes the object from the input stream.
66    *
67    * @param is the input stream to deserialize from.
68    */
69   public void load(ObjectInputStream JavaDoc is)
70     throws IOException JavaDoc;
71   
72   /**
73    * Serializes the object to from the output stream.
74    *
75    * @param os the output stream to deserialize to.
76    */
77   public void store(ObjectOutputStream JavaDoc os)
78     throws IOException JavaDoc;
79
80   public ObjectBacking getBacking();
81
82   public ClusterServer getOwningServer();
83   public ClusterServer getBackupServer();
84 }
85
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