/**
* 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.activemq.kaha.impl.async;
import java.io.IOException;
import org.apache.activeio.journal.InvalidRecordLocationException;
import org.apache.activeio.journal.Journal;
import org.apache.activeio.journal.JournalEventListener;
import org.apache.activeio.journal.RecordLocation;
import org.apache.activeio.packet.ByteArrayPacket;
import org.apache.activeio.packet.Packet;
import org.apache.activemq.util.ByteSequence;
/**
* Provides a Journal Facade to the DataManager.
*
* @version $Revision: 1.1.1.1 $
*/
public final class JournalFacade implements Journal {
private final AsyncDataManager dataManager;
public static class RecordLocationFacade implements RecordLocation {
private final Location location;
public RecordLocationFacade(Location location) {
this.location = location;
}
public Location getLocation() {
return location;
}
public int compareTo(Object o) {
RecordLocationFacade rlf = (RecordLocationFacade)o;
int rc = location.compareTo(rlf.location);
return rc;
}
}
public JournalFacade(AsyncDataManager dataManager) {
this.dataManager = dataManager;
}
private static RecordLocation convertToRecordLocation(Location location) {
if (location == null) {
return null;
}
return new RecordLocationFacade(location);
}
private static Location convertFromRecordLocation(RecordLocation location) {
if (location == null) {
return null;
}
return ((RecordLocationFacade)location).getLocation();
}
public void close() throws IOException {
dataManager.close();
}
public RecordLocation getMark() throws IllegalStateException {
return convertToRecordLocation(dataManager.getMark());
}
public RecordLocation getNextRecordLocation(RecordLocation location) throws InvalidRecordLocationException, IOException, IllegalStateException {
return convertToRecordLocation(dataManager.getNextLocation(convertFromRecordLocation(location)));
}
public Packet read(RecordLocation location) throws InvalidRecordLocationException, IOException, IllegalStateException {
ByteSequence rc = dataManager.read(convertFromRecordLocation(location));
if (rc == null) {
return null;
}
return new ByteArrayPacket(rc.getData(), rc.getOffset(), rc.getLength());
}
public void setJournalEventListener(JournalEventListener listener) throws IllegalStateException {
}
public void setMark(RecordLocation location, boolean sync) throws InvalidRecordLocationException, IOException, IllegalStateException {
dataManager.setMark(convertFromRecordLocation(location), sync);
}
public RecordLocation write(Packet packet, boolean sync) throws IOException, IllegalStateException {
org.apache.activeio.packet.ByteSequence data = packet.asByteSequence();
ByteSequence sequence = new ByteSequence(data.getData(), data.getOffset(), data.getLength());
return convertToRecordLocation(dataManager.write(sequence, sync));
}
}