?? simpletimebroker.java
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/* * Copyright 2004-2005 OpenSymphony * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy * of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * *//* * Previously Copyright (c) 2001-2004 James House */package org.quartz.simpl;import java.util.Date;import org.quartz.SchedulerConfigException;import org.quartz.spi.TimeBroker;/** * <p> * The interface to be implemented by classes that want to provide a mechanism * by which the <code>{@link org.quartz.core.QuartzScheduler}</code> can * reliably determine the current time. * </p> * * <p> * In general, the default implementation of this interface (<code>{@link org.quartz.simpl.SimpleTimeBroker}</code>- * which simply uses <code>System.getCurrentTimeMillis()</code> )is * sufficient. However situations may exist where this default scheme is * lacking in its robustsness - especially when Quartz is used in a clustered * configuration. For example, if one or more of the machines in the cluster * has a system time that varies by more than a few seconds from the clocks on * the other systems in the cluster, scheduling confusion will result. * </p> * * @see org.quartz.core.QuartzScheduler * * @author James House */public class SimpleTimeBroker implements TimeBroker { /* * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * Interface. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ /** * <p> * Get the current time, simply using <code>new Date()</code>. * </p> */ public Date getCurrentTime() { return new Date(); } public void initialize() throws SchedulerConfigException { // do nothing... } public void shutdown() { // do nothing... }}
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