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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  }