LogEntry


1   /*-
2    * See the file LICENSE for redistribution information.
3    *
4    * Copyright (c) 2002,2006 Oracle.  All rights reserved.
5    *
6    * $Id: LogEntry.java,v 1.17 2006/10/30 21:14:22 bostic Exp $
7    */
8   
9   package com.sleepycat.je.log.entry;
10  
11  import java.nio.ByteBuffer  ;
12  
13  import com.sleepycat.je.DatabaseException;
14  
15  /**
16   * A Log entry allows you to read, write and dump a database log entry.  Each
17   * entry may be made up of one or more loggable items.
18   */
19  public interface LogEntry extends Cloneable   {
20  
21      /**
22       * Read in an log entry.
23       */
24      void readEntry(ByteBuffer   entryBuffer, int entrySize,
25                     byte entryTypeVersion, boolean readFullItem)
26          throws DatabaseException;
27  
28      /**
29       * Print out the contents of an entry.
30       */
31      StringBuffer   dumpEntry(StringBuffer   sb, boolean verbose);
32  
33      /**
34       * @return the first item of the log entry
35       */
36      Object   getMainItem();
37  
38      /**
39       * @return a shallow clone.
40       */
41      public Object   clone() throws CloneNotSupportedException  ;
42  
43      /**
44       * @return true if the LogEntry is a transactional log entry type.
45       */
46      public boolean isTransactional();
47  
48      /**
49       * @return return the transaction id if this log entry is transactional,
50       * 0 otherwise.
51       */
52      public long getTransactionId();
53  }
54

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