simpletriggerexample.java

Quartz 是个开源的作业调度框架

/* 
 * Copyright 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.
 * 
 */

package org.quartz.examples.example2;

import java.util.Date;

import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SchedulerMetaData;
import org.quartz.SimpleTrigger;
import org.quartz.TriggerUtils;
import org.quartz.impl.StdSchedulerFactory;

import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;

/**
 * This Example will demonstrate all of the basics of scheduling capabilities
 * of Quartz using Simple Triggers.
 * 
 * @author Bill Kratzer
 */
public class SimpleTriggerExample {

	
	public void run() throws Exception {
		Log log = LogFactory.getLog(SimpleTriggerExample.class);

		log.info("------- Initializing -------------------");

		// First we must get a reference to a scheduler
		SchedulerFactory sf = new StdSchedulerFactory();
		Scheduler sched = sf.getScheduler();

		log.info("------- Initialization Complete --------");

		log.info("------- Scheduling Jobs ----------------");

		// jobs can be scheduled before sched.start() has been called

		// get a "nice round" time a few seconds in the future...
		long ts = TriggerUtils.getNextGivenSecondDate(null, 15).getTime();

		// job1 will only fire once at date/time "ts"
		JobDetail job = new JobDetail("job1", "group1", SimpleJob.class);
		SimpleTrigger trigger = 
			new SimpleTrigger("trigger1", "group1", new Date(ts));

		// schedule it to run!
		Date ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");

		// job2 will only fire once at date/time "ts"
		job = new JobDetail("job2", "group1", SimpleJob.class);
		trigger = new SimpleTrigger("trigger2", "group1", "job2", "group1",
				new Date(ts), null, 0, 0);
		ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");

		// job3 will run 11 times (run once and repeat 10 more times)
		// job3 will repeat every 10 seconds (10000 ms)
		job = new JobDetail("job3", "group1", SimpleJob.class);
		trigger = new SimpleTrigger("trigger3", "group1", "job3", "group1",
				new Date(ts), null, 10, 10000L);
		ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");
		
		// the same job (job3) will be scheduled by a another trigger
		// this time will only run every 70 seocnds (70000 ms)
		trigger = new SimpleTrigger("trigger3", "group2", "job3", "group1",
				new Date(ts), null, 2, 70000L);
		ft = sched.scheduleJob(trigger);
		log.info(job.getFullName() +
				" will [also] run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");

		// job4 will run 6 times (run once and repeat 5 more times)
		// job4 will repeat every 10 seconds (10000 ms)
		job = new JobDetail("job4", "group1", SimpleJob.class);
		trigger = new SimpleTrigger("trigger4", "group1", "job4", "group1",
				new Date(ts), null, 5, 10000L);
		ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");

		// job5 will run once, five minutes past "ts" (300 seconds past "ts")
		job = new JobDetail("job5", "group1", SimpleJob.class);
		trigger = new SimpleTrigger("trigger5", "group1", "job5", "group1",
				new Date(ts + 300000L), null, 0, 0);
		ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");

		// job6 will run indefinitely, every 50 seconds
		job = new JobDetail("job6", "group1", SimpleJob.class);
		trigger = new SimpleTrigger("trigger6", "group1", "job6", "group1",
				new Date(ts), null, SimpleTrigger.REPEAT_INDEFINITELY, 50000L);
		ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");

		log.info("------- Starting Scheduler ----------------");

		// All of the jobs have been added to the scheduler, but none of the jobs
		// will run until the scheduler has been started
		sched.start();

		log.info("------- Started Scheduler -----------------");

		// jobs can also be scheduled after start() has been called...
		// job7 will repeat 20 times, repeat every five minutes
		job = new JobDetail("job7", "group1", SimpleJob.class);
		trigger = new SimpleTrigger("trigger7", "group1", "job7", "group1",
				new Date(ts), null, 20, 300000L);
		ft = sched.scheduleJob(job, trigger);
		log.info(job.getFullName() +
				" will run at: " + ft +  
				" and repeat: " + trigger.getRepeatCount() + 
				" times, every " + trigger.getRepeatInterval() / 1000 + " seconds");
		
		// jobs can be fired directly... (rather than waiting for a trigger)
		job = new JobDetail("job8", "group1", SimpleJob.class);
		job.setDurability(true);
		sched.addJob(job, true);
		log.info("'Manually' triggering job8...");
		sched.triggerJob("job8", "group1");

		log.info("------- Waiting 30 seconds... --------------");

		try {
			// wait 30 seconds to show jobs
			Thread.sleep(30L * 1000L); 
			// executing...
		} catch (Exception e) {
		}

		// jobs can be re-scheduled...  
		// job 7 will run immediately and repeat 10 times for every second
		log.info("------- Rescheduling... --------------------");
		trigger = new SimpleTrigger("trigger7", "group1", "job7", "group1", 
				new Date(), null, 10, 1000L);
		ft = sched.rescheduleJob("trigger7", "group1", trigger);
		log.info("job7 rescheduled to run at: " + ft);
		
		log.info("------- Waiting five minutes... ------------");
		try {
			// wait five minutes to show jobs
			Thread.sleep(300L * 1000L); 
			// executing...
		} catch (Exception e) {
		}

		log.info("------- Shutting Down ---------------------");

		sched.shutdown(true);

		log.info("------- Shutdown Complete -----------------");

		// display some stats about the schedule that just ran
		SchedulerMetaData metaData = sched.getMetaData();
		log.info("Executed " + metaData.numJobsExecuted() + " jobs.");

	}

	public static void main(String[] args) throws Exception {

		SimpleTriggerExample example = new SimpleTriggerExample();
		example.run();

	}

}