001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.apache.commons.configuration.reloading; 019 020 import org.apache.commons.configuration.FileConfiguration; 021 022 /** 023 * A strategy to decide if a configuration should be reloaded. 024 * 025 * @author Emmanuel Bourg 026 * @author Olivier Heger 027 * @version $Revision: 439648 $, $Date: 2006-09-02 22:42:10 +0200 (Sa, 02. Sep 2006) $ 028 * @since 1.1 029 */ 030 public interface ReloadingStrategy 031 { 032 /** 033 * Set the configuration managed by this strategy. 034 * 035 * @param configuration the configuration to monitor 036 */ 037 void setConfiguration(FileConfiguration configuration); 038 039 /** 040 * Initialize the strategy. 041 */ 042 void init(); 043 044 /** 045 * Tell if the evaluation of the strategy requires to reload the configuration. 046 * 047 * @return a flag whether a reload should be performed 048 */ 049 boolean reloadingRequired(); 050 051 /** 052 * Notify the strategy that the file has been reloaded. 053 */ 054 void reloadingPerformed(); 055 056 }