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 */
017package org.apache.commons.configuration2.builder;
018
019import org.apache.commons.configuration2.ex.ConfigurationException;
020import org.apache.commons.configuration2.io.FileHandler;
021import org.apache.commons.configuration2.reloading.FileHandlerReloadingDetector;
022import org.apache.commons.configuration2.reloading.ReloadingDetector;
023
024/**
025 * <p>
026 * A default implementation of the {@code ReloadingDetectorFactory} interface.
027 * </p>
028 * <p>
029 * This factory creates objects of type {@link FileHandlerReloadingDetector}.
030 * Instances have no state and can be shared between multiple builders.
031 * </p>
032 *
033 * @version $Id: DefaultReloadingDetectorFactory.java 1624601 2014-09-12 18:04:36Z oheger $
034 * @since 2.0
035 */
036public class DefaultReloadingDetectorFactory implements
037        ReloadingDetectorFactory
038{
039    @Override
040    public ReloadingDetector createReloadingDetector(FileHandler handler,
041            FileBasedBuilderParametersImpl params)
042            throws ConfigurationException
043    {
044        Long refreshDelay = params.getReloadingRefreshDelay();
045        return (refreshDelay != null) ? new FileHandlerReloadingDetector(
046                handler, refreshDelay) : new FileHandlerReloadingDetector(
047                handler);
048    }
049}