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 018package org.apache.commons.configuration.reloading; 019 020import org.apache.commons.configuration.FileConfiguration; 021 022/** 023 * A strategy to decide if a configuration should be reloaded. 024 * 025 * @author Emmanuel Bourg 026 * @version $Id: ReloadingStrategy.java 1210646 2011-12-05 21:25:01Z oheger $ 027 * @since 1.1 028 */ 029public interface ReloadingStrategy 030{ 031 /** 032 * Set the configuration managed by this strategy. 033 * 034 * @param configuration the configuration to monitor 035 */ 036 void setConfiguration(FileConfiguration configuration); 037 038 /** 039 * Initialize the strategy. 040 */ 041 void init(); 042 043 /** 044 * Tell if the evaluation of the strategy requires to reload the configuration. 045 * 046 * @return a flag whether a reload should be performed 047 */ 048 boolean reloadingRequired(); 049 050 /** 051 * Notify the strategy that the file has been reloaded. 052 */ 053 void reloadingPerformed(); 054 055}