01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * 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 session stores.
37: */
38: public interface DistributedObject {
39: /**
40: * Returns the object's id.
41: */
42: public String 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 is) throws IOException;
70:
71: /**
72: * Serializes the object to from the output stream.
73: *
74: * @param os the output stream to deserialize to.
75: */
76: public void store(ObjectOutputStream os) throws IOException;
77:
78: public ObjectBacking getBacking();
79:
80: public ClusterServer getOwningServer();
81:
82: public ClusterServer getBackupServer();
83: }
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