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Java > Open Source Codes > com > caucho > transaction > xalog > AbstractXALogManager


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.transaction.xalog;
30
31 import com.caucho.transaction.XidImpl;
32
33 import java.io.IOException JavaDoc;
34
35 /**
36  * Implements a single log stream. Each log stream has two associated
37  * files in order to switch at the end of the file.
38  */
39 abstract public class AbstractXALogManager {
40   /**
41    * Starts the log manager.
42    */
43   abstract public void start()
44     throws IOException JavaDoc;
45
46   /**
47    * True if the xid is an already-committed xid
48    */
49   abstract public boolean hasCommittedXid(XidImpl xid);
50
51   /**
52    * Returns a stream for a new transaction.
53    */
54   abstract public AbstractXALogStream getStream();
55
56   /**
57    * Returns a stream for a new transaction.
58    */
59   abstract public void flush();
60
61   /**
62    * Closes the log manager.
63    */
64   abstract public void close();
65 }
66
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