ScheduleFactory

最新推荐文章于 2020-09-28 21:01:45 发布

原创最新推荐文章于 2020-09-28 21:01:45 发布 · 1k 阅读

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#scheduler #scheduleFactory

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本文详细介绍了如何通过ScheduleFactory类获取Scheduler对象的步骤和原理，包括实例化、初始化及使用方法。

/*
 * file name:  ScheduleFactory.java
 * copyright:  Unis Cloud Information Technology Co., Ltd. Copyright 2015,  All rights reserved
 * description:  <description>
 * mofidy staff:  zheng
 * mofidy time:  2015年8月22日
 */
package com.quartz;

import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.impl.StdSchedulerFactory;

/**
 * create Scheduler(单例)
 * 
 * @author  zheng
 * @version  [version, 2015年8月22日]
 * @see  [about class/method]
 * @since  [product/module version]
 */
public class ScheduleFactory {
    private static Scheduler scheduler;
    
    private ScheduleFactory(){}
    
    private static class SingleClassInstance{
        private static final ScheduleFactory instance = new ScheduleFactory();
    }
    
    /***
     * get single schedule factory instance
     * @return [explain parameter]
     * 
     * @return ScheduleFactory [explain return type]
     * @exception throws [exception type] [explain exception]
     * @see [class,class#method,class#member]
     */
    public static ScheduleFactory getScheduleFactory(){
        return SingleClassInstance.instance;
    }
    
    /***
     * get scheduler
     * @return
     * @throws SchedulerException [explain parameter]
     * 
     * @return Scheduler [explain return type]
     * @exception throws [exception type] [explain exception]
     * @see [class,class#method,class#member]
     */
    public static Scheduler getScheduler() throws SchedulerException{
        if(scheduler == null){
            scheduler = new StdSchedulerFactory().getScheduler();
        }
        return scheduler;
    }
}

获取Scheduler对象：Scheduler scheduler = ScheduleFactory.getScheduleFactory().getScheduler();