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Java > Open Source Codes > com > sleepycat > je > log > entry > BINDeltaLogEntry


1 /*
2  * See the file LICENSE for redistribution information.
3  *
4  * Copyright (c) 2002,2006 Oracle. All rights reserved.
5  *
6  * $Id: BINDeltaLogEntry.java,v 1.22 2006/10/30 21:14:21 bostic Exp $
7  */
8
9 package com.sleepycat.je.log.entry;
10
11 import com.sleepycat.je.DatabaseException;
12 import com.sleepycat.je.dbi.DatabaseId;
13 import com.sleepycat.je.dbi.EnvironmentImpl;
14 import com.sleepycat.je.tree.BINDelta;
15 import com.sleepycat.je.tree.IN;
16
17 /**
18  * A BINDeltaLogEntry knows how to create a whole BIN from a delta entry.
19  */
20 public class BINDeltaLogEntry extends SingleItemLogEntry
21     implements INContainingEntry {
22
23     /**
24      * @param logClass
25      */
26     public BINDeltaLogEntry(Class JavaDoc logClass) {
27         super(logClass);
28     }
29
30     /*
31      * @see com.sleepycat.je.log.entry.INContainingEntry#getIN()
32      */
33     public IN getIN(EnvironmentImpl env)
34         throws DatabaseException {
35
36         BINDelta delta = (BINDelta) getMainItem();
37         return delta.reconstituteBIN(env);
38     }
39
40     /*
41      * @see com.sleepycat.je.log.entry.INContainingEntry#getDbId()
42      */
43     public DatabaseId getDbId() {
44
45         BINDelta delta = (BINDelta) getMainItem();
46         return delta.getDbId();
47     }
48
49     /**
50      * @return the LSN that represents this IN. For this BINDelta, it's
51      * the last full version.
52      */
53     public long getLsnOfIN(long lastReadLsn) {
54
55         BINDelta delta = (BINDelta) getMainItem();
56         return delta.getLastFullLsn();
57     }
58 }
59
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