001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 * 019 */ 020package org.apache.directory.server.core.partition.impl.btree.jdbm; 021 022import java.io.IOException; 023 024import org.apache.directory.server.core.api.partition.PartitionWriteTxn; 025 026import jdbm.RecordManager; 027import jdbm.recman.BaseRecordManager; 028import jdbm.recman.CacheRecordManager; 029 030/** 031 * The JDBM partition write transaction 032 * 033 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 034 */ 035public class JdbmPartitionWriteTxn extends PartitionWriteTxn 036{ 037 /** The associated record manager */ 038 private RecordManager recordManager; 039 040 /** A flag used to flush data immediately or not */ 041 private boolean syncOnWrite = false; 042 043 /** 044 * Create an instance of JdbmPartitionWriteTxn 045 * 046 * @param recordManager The RecordManager instance 047 * @param syncOnWrite If we want to data to be flushed on each write 048 */ 049 public JdbmPartitionWriteTxn( RecordManager recordManager, boolean syncOnWrite ) 050 { 051 this.recordManager = recordManager; 052 this.syncOnWrite = syncOnWrite; 053 } 054 055 056 /** 057 * {@inheritDoc} 058 */ 059 @Override 060 public void commit() throws IOException 061 { 062 recordManager.commit(); 063 064 // And flush the journal 065 BaseRecordManager baseRecordManager = null; 066 067 if ( recordManager instanceof CacheRecordManager ) 068 { 069 baseRecordManager = ( ( BaseRecordManager ) ( ( CacheRecordManager ) recordManager ).getRecordManager() ); 070 } 071 else 072 { 073 baseRecordManager = ( ( BaseRecordManager ) recordManager ); 074 } 075 076 077 if ( syncOnWrite ) 078 { 079 baseRecordManager.getTransactionManager().synchronizeLog(); 080 } 081 } 082 083 084 /** 085 * {@inheritDoc} 086 */ 087 @Override 088 public void abort() throws IOException 089 { 090 recordManager.rollback(); 091 } 092 093 094 /** 095 * {@inheritDoc} 096 */ 097 @Override 098 public boolean isClosed() 099 { 100 return false; 101 } 102 103 104 /** 105 * {@inheritDoc} 106 */ 107 @Override 108 public void close() throws IOException 109 { 110 commit(); 111 } 112}