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/*
* Copyright (c) OSGi Alliance (2005, 2008). 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</code> listener that does not filter based upon
* package wiring. <code>AllServiceListener</code> is a listener interface
* that may be implemented by a bundle developer. When a
* <code>ServiceEvent</code> is fired, it is synchronously delivered to an
* <code>AllServiceListener</code>. The Framework may deliver
* <code>ServiceEvent</code> objects to an <code>AllServiceListener</code>
* out of order and may concurrently call and/or reenter an
* <code>AllServiceListener</code>.
* <p>
* An <code>AllServiceListener</code> object is registered with the Framework
* using the <code>BundleContext.addServiceListener</code> method.
* <code>AllServiceListener</code> objects are called with a
* <code>ServiceEvent</code> object when a service is registered, modified, or
* is in the process of unregistering.
*
* <p>
* <code>ServiceEvent</code> object delivery to
* <code>AllServiceListener</code> 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</code>
* objects are only delivered to the listener if the bundle which defines the
* listener object's class has the appropriate <code>ServicePermission</code>
* to get the service using at least one of the named classes under which the
* service was registered.
*
* <p>
* Unlike normal <code>ServiceListener</code> objects,
* <code>AllServiceListener</code> objects receive all
* <code>ServiceEvent</code> 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 $Revision: 5673 $
*/
public interface AllServiceListener extends ServiceListener {
// This is a marker interface
}