/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* 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.apache.cocoon.webapps.session.selection;
import java.util.Map;
import org.apache.avalon.framework.parameters.Parameters;
import org.apache.avalon.framework.service.ServiceException;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.service.Serviceable;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.selection.Selector;
import org.apache.cocoon.webapps.session.MediaManager;
/**
* This selector uses the media management.
*
* @author <a href="mailto:cziegeler@apache.org">Carsten Ziegeler</a>
* @version CVS $Id: MediaSelector.java,v 1.3 2004/03/05 13:02:22 bdelacretaz Exp $
*/
public final class MediaSelector
implements Serviceable, Selector, ThreadSafe {
private ServiceManager manager;
/**
* Selector
*/
public boolean select (String expression, Map objectModel, Parameters parameters) {
MediaManager mediaManager = null;
boolean result;
try {
mediaManager = (MediaManager) this.manager.lookup( MediaManager.ROLE );
result = mediaManager.testMedia(expression);
} catch (Exception local) {
// ignore me
result = false;
} finally {
this.manager.release(mediaManager );
}
return result;
}
/* (non-Javadoc)
* @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager)
*/
public void service(ServiceManager manager) throws ServiceException {
this.manager = manager;
}
}