1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.configuration.event;
18
19 /**
20 * <p>
21 * A simple event listener interface for configuration observers.
22 * </p>
23 * <p>
24 * This interface can be implemented by classes that are interested in
25 * "raw" events caused by configuration objects. Each manipulation on
26 * a configuration object will generate such an event. There is only a single
27 * method that is invoked when an event occurs.
28 * </p>
29 *
30 * @author <a
31 * href="http://commons.apache.org/configuration/team-list.html">Commons
32 * Configuration team</a>
33 * @version $Id: ConfigurationListener.java 561230 2007-07-31 04:17:09Z rahul $
34 * @since 1.3
35 */
36 public interface ConfigurationListener
37 {
38 /**
39 * Notifies this listener about a manipulation on a monitored configuration
40 * object.
41 *
42 * @param event the event describing the manipulation
43 */
44 void configurationChanged(ConfigurationEvent event);
45 }