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/*
* Copyright (c) OSGi Alliance (2005, 2010). 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.framework;
/**
* A {@code ServiceEvent} listener that does not filter based upon
* package wiring. {@code AllServiceListener} is a listener interface
* that may be implemented by a bundle developer. When a
* {@code ServiceEvent} is fired, it is synchronously delivered to an
* {@code AllServiceListener}. The Framework may deliver
* {@code ServiceEvent} objects to an {@code AllServiceListener}
* out of order and may concurrently call and/or reenter an
* {@code AllServiceListener}.
* <p>
* An {@code AllServiceListener} object is registered with the Framework
* using the {@code BundleContext.addServiceListener} method.
* {@code AllServiceListener} objects are called with a
* {@code ServiceEvent} object when a service is registered, modified, or
* is in the process of unregistering.
*
* <p>
* {@code ServiceEvent} object delivery to
* {@code AllServiceListener} objects is filtered by the filter specified
* when the listener was registered. If the Java Runtime Environment supports
* permissions, then additional filtering is done. {@code ServiceEvent}
* objects are only delivered to the listener if the bundle which defines the
* listener object's class has the appropriate {@code ServicePermission}
* to get the service using at least one of the named classes under which the
* service was registered.
*
* <p>
* Unlike normal {@code ServiceListener} objects,
* {@code AllServiceListener} objects receive all
* {@code ServiceEvent} objects regardless of whether the package source
* of the listening bundle is equal to the package source of the bundle that
* registered the service. This means that the listener may not be able to cast
* the service object to any of its corresponding service interfaces if the
* service object is retrieved.
*
* @see ServiceEvent
* @see ServicePermission
* @ThreadSafe
* @since 1.3
* @version $Id: 35cee8a49e89b7b222aa3f85e1af0b4a4b550ce6 $
*/
public interface AllServiceListener extends ServiceListener {
// This is a marker interface
}