/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.geronimo.specs.jpa;
import org.osgi.framework.ServiceReference;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
/**
* Used to track JPA service providers in an OSGi environment.
*
* @version $Rev$ $Date$
*/
public class PersistenceTracker implements ServiceTrackerCustomizer {
private PersistenceActivator activator;
public PersistenceTracker(PersistenceActivator activator) {
this.activator = activator;
}
/* (non-Javadoc)
* @see org.osgi.util.tracker.ServiceTrackerCustomizer#addingService(org.osgi.framework.ServiceReference)
*/
public Object addingService(ServiceReference arg0) {
return activator.addProvider(arg0);
}
/* (non-Javadoc)
* @see org.osgi.util.tracker.ServiceTrackerCustomizer#modifiedService(org.osgi.framework.ServiceReference, java.lang.Object)
*/
public void modifiedService(ServiceReference arg0, Object arg1) {
// handle as a remove - modify is unsupported
removedService(arg0, arg1);
}
/* (non-Javadoc)
* @see org.osgi.util.tracker.ServiceTrackerCustomizer#removedService(org.osgi.framework.ServiceReference, java.lang.Object)
*/
public void removedService(ServiceReference arg0, Object arg1) {
activator.removeProvider(arg0);
}
}