/*
* Copyright 2007 Joachim Grueneis
*
* 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.exolab.castor.xml.util.resolvers;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.exolab.castor.mapping.MappingLoader;
import org.exolab.castor.xml.ResolverException;
import org.exolab.castor.xml.XMLClassDescriptor;
import org.exolab.castor.xml.util.ResolverStrategy;
/**
* How to sought a descriptor for a class in a specified mapping loader.
*
* @author <a href="mailto:jgrueneis AT gmail DOT com">Joachim Grueneis</a>
* @author <a href="mailto:stevendolg AT gxm DOT at">Steven Dolg</a>
* @version $Revision$ $Date$
* @since 1.2
*/
public class ByMappingLoader extends AbstractResolverClassCommand {
private static final Log LOG = LogFactory.getLog(ByMappingLoader.class);
/**
* No specific stuff needed.
*/
public ByMappingLoader() {
super();
}
/**
* If a mapping loader is set in the configuration the descriptor for the given
* class / className is taken from the mapping loader and put into the cache.
* <br>
* {@inheritDoc}
*/
protected Map internalResolve(final String className, final ClassLoader classLoader,
final Map properties) throws ResolverException {
MappingLoader mappingLoader = (MappingLoader)properties.get(ResolverStrategy.PROPERTY_MAPPING_LOADER);
HashMap results = new HashMap();
if (mappingLoader == null) {
LOG.debug("No mapping loader specified");
return results;
}
XMLClassDescriptor descriptor = (XMLClassDescriptor) mappingLoader.getDescriptor(className);
if (descriptor != null) {
if (LOG.isDebugEnabled()) {
LOG.debug("Found descriptor: " + descriptor);
}
results.put(className, descriptor);
}
return results;
}
}