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Java > Open Source Codes > org > osgi > service > cm > ConfigurationListener


1 /*
2  * $Header: /cvshome/build/org.osgi.service.cm/src/org/osgi/service/cm/ConfigurationListener.java,v 1.10 2006/06/16 16:31:28 hargrave Exp $
3  *
4  * Copyright (c) OSGi Alliance (2004, 2006). All Rights Reserved.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 package org.osgi.service.cm;
19
20 /**
21  * Listener for Configuration Events. When a <code>ConfigurationEvent</code>
22  * is fired, it is asynchronously delivered to a
23  * <code>ConfigurationListener</code>.
24  *
25  * <p>
26  * <code>ConfigurationListener</code> objects are registered with the
27  * Framework service registry and are notified with a
28  * <code>ConfigurationEvent</code> object when an event is fired.
29  * <p>
30  * <code>ConfigurationListener</code> objects can inspect the received
31  * <code>ConfigurationEvent</code> object to determine its type, the pid of
32  * the <code>Configuration</code> object with which it is associated, and the
33  * Configuration Admin service that fired the event.
34  *
35  * <p>
36  * Security Considerations. Bundles wishing to monitor configuration events will
37  * require <code>ServicePermission[ConfigurationListener,REGISTER]</code> to
38  * register a <code>ConfigurationListener</code> service.
39  *
40  * @version $Revision: 1.10 $
41  * @since 1.2
42  */
43 public interface ConfigurationListener {
44     /**
45      * Receives notification of a Configuration that has changed.
46      *
47      * @param event The <code>ConfigurationEvent</code>.
48      */
49     public void configurationEvent(ConfigurationEvent event);
50 }
51
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