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 }