001 /**
002 *
003 * Copyright 2005 Hiram Chirino
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 *
017 **/
018 package org.activemq.broker.impl;
019
020 import java.io.File;
021 import java.io.IOException;
022
023 import org.activemq.io.util.MemoryBoundedObjectManager;
024 import org.activemq.store.PersistenceAdapter;
025 import org.activemq.store.PersistenceAdapterFactory;
026 import org.activemq.store.cache.MemoryBoundedCachePersistenceAdapter;
027 import org.activemq.store.jdbc.JDBCPersistenceAdapter;
028 import org.activemq.store.journal.JournalPersistenceAdapter;
029 import org.apache.derby.jdbc.EmbeddedDataSource;
030
031 /**
032 * Factory class that can create PersistenceAdapter objects.
033 *
034 * @version $Revision: 1.1.1.1 $
035 */
036 public class DefaultPersistenceAdapterFactory implements PersistenceAdapterFactory {
037
038 /**
039 * Creates a persistence Adapter that can use a given directory to store it's data.
040 * @throws IOException
041 */
042 public PersistenceAdapter createPersistenceAdapter(File dataDirectory, MemoryBoundedObjectManager memManager) throws IOException {
043
044 // Setup the Derby datasource.
045 System.setProperty("derby.system.home", dataDirectory.getCanonicalPath());
046 System.setProperty("derby.storage.fileSyncTransactionLog", "true");
047
048 EmbeddedDataSource ds = new EmbeddedDataSource();
049 ds.setDatabaseName("derbydb");
050 ds.setCreateDatabase("create");
051 JDBCPersistenceAdapter jdbcAdapter = new JDBCPersistenceAdapter();
052 jdbcAdapter.setDataSource(ds);
053
054 // Setup the Journal
055 File journalDir = new File(dataDirectory, "journal");
056 JournalPersistenceAdapter journalAdapter = new JournalPersistenceAdapter(journalDir, jdbcAdapter);
057 journalAdapter.setJournalType(JournalPersistenceAdapter.DEFAULT_JOURNAL_TYPE);
058
059 // Add a cache layer if the memory manager is available.
060 if( memManager==null )
061 return journalAdapter;
062
063 MemoryBoundedCachePersistenceAdapter cacheAdapter = new MemoryBoundedCachePersistenceAdapter(journalAdapter);
064 cacheAdapter.setMemoryManager(memManager);
065 return cacheAdapter;
066 }
067 }