/*
* Copyright 2007 Alin Dreghiciu.
*
* 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.ops4j.pax.swissbox.tracker;
import org.osgi.framework.ServiceReference;
public interface ServiceCollectionListener<T>
{
/**
* Notify that a service is added.
*
* @param serviceReference service reference of the added service
* @param service the service that was added
*
* @return true if the service should be retained in the collection, false otherwise
*/
boolean serviceAdded( final ServiceReference serviceReference, final T service );
/**
* Notify that a service was removed.
*
* @param serviceReference service reference of the removed service
* @param service the service that was removed
*/
void serviceRemoved( final ServiceReference serviceReference, final T service );
}