/*
* Copyright (c) OSGi Alliance (2012, 2017). All Rights Reserved.
*
* 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.osgi.service.cm;
import org.osgi.annotation.versioning.ConsumerType;
/**
* Synchronous Listener for Configuration Events. When a
* {@code ConfigurationEvent} is fired, it is synchronously delivered to all
* {@code SynchronousConfigurationListener}s.
* <p>
* {@code SynchronousConfigurationListener} objects are registered with the
* Framework service registry and are synchronously notified with a
* {@code ConfigurationEvent} object when an event is fired.
* <p>
* {@code SynchronousConfigurationListener} objects can inspect the received
* {@code ConfigurationEvent} object to determine its type, the PID of the
* {@code Configuration} object with which it is associated, and the
* Configuration Admin service that fired the event.
* <p>
* Security Considerations. Bundles wishing to synchronously monitor
* configuration events will require
* {@code ServicePermission[SynchronousConfigurationListener,REGISTER]} to
* register a {@code SynchronousConfigurationListener} service.
*
* @author $Id$
* @since 1.5
* @ThreadSafe
*/
@ConsumerType
public interface SynchronousConfigurationListener extends ConfigurationListener {
// Marker interface
}