/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.core.journal;
/**
* Produces new records that can be appended to the journal.
*/
public class DefaultRecordProducer implements RecordProducer {
/**
* Journal.
*/
private final AbstractJournal journal;
/**
* Producer identifier.
*/
private String id;
/**
* Create a new instance of this class.
*
* @param journal journal
* @param id producer id
*/
public DefaultRecordProducer(AbstractJournal journal, String id) {
this.journal = journal;
this.id = id;
}
/**
* {@inheritDoc}
*/
public Record append() throws JournalException {
AppendRecord record = null;
journal.lockAndSync();
try {
record = createRecord();
journal.appending(record);
return record;
} finally {
if (record == null) {
journal.unlock(false);
}
}
}
/**
* Create a new record. May be overridden by subclasses.
*
* @throws JournalException if an error occurs
*/
protected AppendRecord createRecord() throws JournalException {
return new AppendRecord(journal, id);
}
}