/*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is the Kowari Metadata Store.
*
* The Initial Developer of the Original Code is Plugged In Software Pty
* Ltd (http://www.pisoftware.com, mailto:info@pisoftware.com). Portions
* created by Plugged In Software Pty Ltd are Copyright (C) 2001,2002
* Plugged In Software Pty Ltd. All Rights Reserved.
*
* Contributor(s): N/A.
*
* [NOTE: The text of this Exhibit A may differ slightly from the text
* of the notices in the Source Code files of the Original Code. You
* should use the text of this Exhibit A rather than the text found in the
* Original Code Source Code for Your Modifications.]
*
*/
package org.mulgara.store.nodepool.xa;
// Java 2 standard packages
import java.io.File;
import java.io.IOException;
// Third-party packages
import org.apache.log4j.*;
// Local packages
import org.mulgara.resolver.spi.FactoryInitializer;
import org.mulgara.resolver.spi.InitializerException;
import org.mulgara.store.nodepool.NodePool;
import org.mulgara.store.nodepool.NodePoolException;
import org.mulgara.store.nodepool.NodePoolFactory;
/**
* A {@link NodePoolFactory} that constructs {@link XANodePoolImpl}
* instances.
*
* @created 2004-06-01
*
* @author <a href="http://staff.pisoftware.com/raboczi/">Simon Raboczi</a>
*
* @version $Revision: 1.1 $
*
* @modified $Date: 2005/02/22 08:16:45 $
*
* @maintenanceAuthor $Author: newmana $
*
* @company <A href="mailto:info@PIsoftware.com">Plugged In Software</A>
*
* @copyright © 2004 <A href="http://www.PIsoftware.com/">Plugged In
* Software Pty Ltd</A>
*
* @licence <a href="{@docRoot}/../../LICENCE">Mozilla Public License v1.1</a>
*/
public class XANodePoolFactory implements NodePoolFactory
{
/**
* Logger.
*/
private static final Logger logger =
Logger.getLogger(XANodePoolFactory.class.getName());
/**
* The singleton instance of this class.
*/
private static NodePoolFactory nodePoolFactory = null;
/**
* The base file name.
*/
private final String baseName;
/**
* This constructor is only for internal use.
*
* Use the {@link #newInstance} method to obtain instances.
*/
private XANodePoolFactory(String baseName) {
this.baseName = baseName;
}
/**
* Obtain the singleton instance of this factory.
*
* @param factoryInitializer not used
*/
static public NodePoolFactory newInstance(FactoryInitializer factoryInitializer)
throws InitializerException {
//!!FIXME: getDirectory has the side effect of creating the directory if
// required. this needs to be fixed! Down with side effects!
File directory = factoryInitializer.getDirectory();
if (nodePoolFactory == null) {
// Lazily initialize the singleton instance
nodePoolFactory = new XANodePoolFactory(
directory.toString() + File.separatorChar + "xa"
);
}
return nodePoolFactory;
}
//
// Methods implementing NodePoolFactory
//
/**
* {@inheritDoc NodePoolFactory}
*/
public NodePool newNodePool() throws NodePoolException
{
try {
XANodePoolImpl xaNodePoolImpl = new XANodePoolImpl(baseName);
return xaNodePoolImpl;
} catch (IOException e) {
logger.error("Couldn't construct node pool", e);
throw new NodePoolException("Couldn't construct node pool", e);
}
}
}