Java tutorial
/* * Copyright 2005 - 2009 Terracotta, Inc. * * 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.getNumberOfJobsExecuted() + " jobs."); } public static void main(String[] args) throws Exception { SimpleTriggerExample example = new SimpleTriggerExample(); example.run(); } }