/*
* 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.resolver.jar;
// local packages
import org.apache.log4j.Logger;
import org.mulgara.content.ContentHandlerManager;
import org.mulgara.resolver.spi.InitializerException;
import org.mulgara.resolver.spi.Resolver;
import org.mulgara.resolver.spi.ResolverFactory;
import org.mulgara.resolver.spi.ResolverFactoryException;
import org.mulgara.resolver.spi.ResolverFactoryInitializer;
import org.mulgara.resolver.spi.ResolverSession;
/**
* Resolves constraints in models defined by static RDF documents.
*
* @created 2004-11-09
* @author <a href="http://staff.pisoftware.com/raboczi">Tate Jones</a>
* @version $Revision: 1.8 $
* @modified $Date: 2005/01/05 04:58:46 $ @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 JarResolverFactory implements ResolverFactory
{
/**
* Logger.
*/
@SuppressWarnings("unused")
private static final Logger logger =
Logger.getLogger(JarResolverFactory.class.getName());
private final ContentHandlerManager contentHandlers;
//
// Constructors
//
/**
* Instantiate a {@link JarResolverFactory}.
*/
private JarResolverFactory(
ResolverFactoryInitializer resolverFactoryInitializer
)
throws InitializerException
{
// Validate "resolverFactoryInitializer" parameter
if (resolverFactoryInitializer == null) {
throw new IllegalArgumentException(
"Null \"resolverFactoryInitializer\" parameter"
);
}
// Obtain the content handler list
contentHandlers = resolverFactoryInitializer.getContentHandlers();
// Claim the protocols supported by java.net.URL
resolverFactoryInitializer.addProtocol("jar", this);
// Indicate that content caching is required
resolverFactoryInitializer.cacheModelAccess(this);
}
//
// Methods implementing ResolverFactory
//
/**
* {@inheritDoc ResolverFactory}
*
* This is actually a non-operation, because the only persistent resources
* are outside the database.
*/
public void close()
{
// null implementation
}
/**
* {@inheritDoc ResolverFactory}
*
* This is actually a non-operation, because the only persistent resources
* are outside the database.
*/
public void delete()
{
// null implementation
}
/**
* {@inheritDoc}
* @return <code>null</code> - no default graphs for this resolver
*/
public Graph[] getDefaultGraphs() { return null; }
/**
* {@inheritDoc}
* @return <code>true</code> - this graph supports exports.
*/
public boolean supportsExport() {
return true;
}
/**
* Register this resolver upon database startup.
*
* @param resolverFactoryInitializer the database within which to find or
* create the various XML Schema resources
* @throws InitializerException if the XML Schema resources can't be found or
* created
*/
public static ResolverFactory newInstance(
ResolverFactoryInitializer resolverFactoryInitializer
)
throws InitializerException
{
return new JarResolverFactory(resolverFactoryInitializer);
}
/**
* Obtain a Jar resolver.
*
* @param resolverSession the session which this query is local to
* @param canWrite {@inheritDoc}; ignored in this implementation
* @throws IllegalArgumentException if <var>resolverSession</var> is
* <code>null</code>
* @throws ResolverFactoryException {@inheritDoc}
*/
public Resolver newResolver(boolean canWrite,
ResolverSession resolverSession, Resolver systemResolver) throws ResolverFactoryException
{
return new JarResolver(resolverSession, systemResolver, contentHandlers);
}
}