TxnalDeletedEntry


1   /*-
2    * See the file LICENSE for redistribution information.
3    *
4    * Copyright (c) 2002,2006 Oracle.  All rights reserved.
5    *
6    * $Id: TxnalDeletedEntry.java,v 1.4 2006/10/30 21:14:49 bostic Exp $
7    */
8   
9   package com.sleepycat.je.recovery.stepwise;
10  
11  import java.util.HashSet  ;
12  import java.util.Map  ;
13  import java.util.Set  ;
14  
15  import com.sleepycat.bind.tuple.IntegerBinding;
16  import com.sleepycat.je.DatabaseEntry;
17  
18  /*
19   * A Transactional log entry should add put itself
20   * into the not-yet-committed set.
21   */
22  
23  public class TxnalDeletedEntry extends LogEntryInfo {
24      private long txnId;
25  
26      TxnalDeletedEntry(long lsn,
27                        int key,
28                        int data,
29                        long txnId) {
30          super(lsn, key, data);
31          this.txnId = txnId;
32      }
33  
34      /* Implement this accordingly. For example, a LogEntryInfo which
35       * represents a non-txnal LN record would add that key/data to the
36       * expected set. A txnal delete LN record would delete the record
37       * from the expecte set at commit time.
38       */
39      public void updateExpectedSet(Set   useExpected,
40                                    Map   newUncommittedRecords,
41                                    Map   deletedUncommittedRecords) {
42          DatabaseEntry keyEntry = new DatabaseEntry();
43          DatabaseEntry dataEntry = new DatabaseEntry();
44  
45          IntegerBinding.intToEntry(key, keyEntry);
46          IntegerBinding.intToEntry(data, dataEntry);
47  
48          Long   mapKey = new Long  (txnId);
49          Set   records = (Set  ) deletedUncommittedRecords.get(mapKey);
50          if (records == null) {
51              records = new HashSet  ();
52             deletedUncommittedRecords.put(mapKey, records);
53          } 
54          records.add(new TestData(keyEntry, dataEntry));
55      }
56  }
57
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