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Java > Open Source Codes > org > osgi > service > log > LogListener


1 /*
2  * $Header: /cvshome/build/org.osgi.service.log/src/org/osgi/service/log/LogListener.java,v 1.9 2006/06/16 16:31:49 hargrave Exp $
3  *
4  * Copyright (c) OSGi Alliance (2000, 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.log;
19
20 import java.util.EventListener JavaDoc;
21
22 /**
23  * Subscribes to <code>LogEntry</code> objects from the <code>LogReaderService</code>.
24  *
25  * <p>
26  * A <code>LogListener</code> object may be registered with the Log Reader Service
27  * using the <code>LogReaderService.addLogListener</code> method. After the
28  * listener is registered, the <code>logged</code> method will be called for each
29  * <code>LogEntry</code> object created. The <code>LogListener</code> object may be
30  * unregistered by calling the <code>LogReaderService.removeLogListener</code>
31  * method.
32  *
33  * @version $Revision: 1.9 $
34  * @see LogReaderService
35  * @see LogEntry
36  * @see LogReaderService#addLogListener(LogListener)
37  * @see LogReaderService#removeLogListener(LogListener)
38  */
39 public interface LogListener extends EventListener JavaDoc {
40     /**
41      * Listener method called for each LogEntry object created.
42      *
43      * <p>
44      * As with all event listeners, this method should return to its caller as
45      * soon as possible.
46      *
47      * @param entry A <code>LogEntry</code> object containing log information.
48      * @see LogEntry
49      */
50     public void logged(LogEntry entry);
51 }
52
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