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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   * &quot;raw&quot; 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://jakarta.apache.org/commons/configuration/team-list.html">Commons
32   * Configuration team</a>
33   * @version $Id: ConfigurationListener.java 439648 2006-09-02 20:42:10Z oheger $
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  }