1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.directory.server.core.partition.impl.btree.jdbm;
21
22 import java.io.IOException;
23
24 import org.apache.directory.server.core.api.partition.PartitionWriteTxn;
25
26 import jdbm.RecordManager;
27 import jdbm.recman.BaseRecordManager;
28 import jdbm.recman.CacheRecordManager;
29
30 /**
31 * The JDBM partition write transaction
32 *
33 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
34 */
35 public class JdbmPartitionWriteTxn extends PartitionWriteTxn
36 {
37 /** The associated record manager */
38 private RecordManager recordManager;
39
40 /** A flag used to flush data immediately or not */
41 private boolean syncOnWrite = false;
42
43 /**
44 * Create an instance of JdbmPartitionWriteTxn
45 *
46 * @param recordManager The RecordManager instance
47 * @param syncOnWrite If we want to data to be flushed on each write
48 */
49 public JdbmPartitionWriteTxn( RecordManager recordManager, boolean syncOnWrite )
50 {
51 this.recordManager = recordManager;
52 this.syncOnWrite = syncOnWrite;
53 }
54
55
56 /**
57 * {@inheritDoc}
58 */
59 @Override
60 public void commit() throws IOException
61 {
62 recordManager.commit();
63
64 // And flush the journal
65 BaseRecordManager baseRecordManager = null;
66
67 if ( recordManager instanceof CacheRecordManager )
68 {
69 baseRecordManager = ( ( BaseRecordManager ) ( ( CacheRecordManager ) recordManager ).getRecordManager() );
70 }
71 else
72 {
73 baseRecordManager = ( ( BaseRecordManager ) recordManager );
74 }
75
76
77 if ( syncOnWrite )
78 {
79 baseRecordManager.getTransactionManager().synchronizeLog();
80 }
81 }
82
83
84 /**
85 * {@inheritDoc}
86 */
87 @Override
88 public void abort() throws IOException
89 {
90 recordManager.rollback();
91 }
92
93
94 /**
95 * {@inheritDoc}
96 */
97 @Override
98 public boolean isClosed()
99 {
100 return false;
101 }
102
103
104 /**
105 * {@inheritDoc}
106 */
107 @Override
108 public void close() throws IOException
109 {
110 commit();
111 }
112 }