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/*
* Copyright (c) OSGi Alliance (2004, 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;
/**
* Listener for Configuration Events. When a {@code ConfigurationEvent} is
* fired, it is asynchronously delivered to all {@code ConfigurationListener}s.
* <p>
* {@code ConfigurationListener} objects are registered with the Framework
* service registry and are notified with a {@code ConfigurationEvent} object
* when an event is fired.
* <p>
* {@code ConfigurationListener} 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 monitor configuration events will
* require {@code ServicePermission[ConfigurationListener,REGISTER]} to register
* a {@code ConfigurationListener} service.
*
* @author $Id$
* @since 1.2
* @ThreadSafe
*/
@ConsumerType
public interface ConfigurationListener {
/**
* Receives notification of a Configuration that has changed.
*
* @param event The {@code ConfigurationEvent}.
*/
public void configurationEvent(ConfigurationEvent event);
}
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