/**
*
* Copyright 2004 Hiram Chirino
*
* Licensed 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.activemq.store.cache;
import java.io.IOException;
import java.util.Map;
import javax.jms.JMSException;
import org.activemq.store.MessageStore;
import org.activemq.store.PersistenceAdapter;
import org.activemq.store.TopicMessageStore;
import org.activemq.store.TransactionStore;
/**
* Implements a {@link PersistenceAdapter} designed to
* to speed up access to recently added messages by using
* a MessageCache .
*
* @version $Revision: 1.1.1.1 $
*/
public abstract class CachePersistenceAdapter implements PersistenceAdapter {
private PersistenceAdapter longTermPersistence;
public CachePersistenceAdapter() {
}
public CachePersistenceAdapter(PersistenceAdapter longTermPersistence) throws IOException {
this.longTermPersistence = longTermPersistence;
}
public Map getInitialDestinations() {
return longTermPersistence.getInitialDestinations();
}
public MessageStore createQueueMessageStore(String destinationName) throws JMSException {
MessageStore longtermStore = longTermPersistence.createQueueMessageStore(destinationName);
CacheMessageStore store = new CacheMessageStore(this, longtermStore, createMessageCache(destinationName));
return store;
}
public TopicMessageStore createTopicMessageStore(String destinationName) throws JMSException {
TopicMessageStore longtermStore = longTermPersistence.createTopicMessageStore(destinationName);
CacheTopicMessageStore store = new CacheTopicMessageStore(this, longtermStore, new SimpleMessageCache());
return store;
}
public TransactionStore createTransactionStore() throws JMSException {
return longTermPersistence.createTransactionStore();
}
public void beginTransaction() throws JMSException {
longTermPersistence.beginTransaction();
}
public void commitTransaction() throws JMSException {
longTermPersistence.commitTransaction();
}
public void rollbackTransaction() {
longTermPersistence.rollbackTransaction();
}
public void start() throws JMSException {
longTermPersistence.start();
}
public void stop() throws JMSException {
longTermPersistence.stop();
}
// Properties
//-------------------------------------------------------------------------
public PersistenceAdapter getLongTermPersistence() {
return longTermPersistence;
}
public void setLongTermPersistence(PersistenceAdapter longTermPersistence) {
this.longTermPersistence = longTermPersistence;
}
/**
* Subclasses should override this method to change the type
* of MessageCache that is used to cache messages.
*
* @param destinationName
* @return
*/
abstract protected MessageCache createMessageCache(String destinationName);
}