listenerexample.java

Quartz is a full-featured, open source job scheduling system that can be integrated with, or used al

/* 
 * 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.example9;

import java.util.Date;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.JobDetail;
import org.quartz.JobListener;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SchedulerMetaData;
import org.quartz.SimpleTrigger;
import org.quartz.examples.example2.SimpleJob;
import org.quartz.impl.StdSchedulerFactory;

/**
 * Demonstrates the behavior of <code>JobListener</code>s.  In particular, 
 * this example will use a job listener to trigger another job after one
 * job succesfully executes.
 * 
 */
public class ListenerExample {

    public void run() throws Exception {
        Log log = LogFactory.getLog(ListenerExample.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 -------------------");

        // schedule a job to run immediately
        JobDetail job = new JobDetail("job1", "group1", SimpleJob.class);
        SimpleTrigger trigger = new SimpleTrigger("trigger1", "group1", 
                new Date(), 
                null, 
                0, 
                0);
        // Set up the listener
        JobListener listener = new Job1Listener();
        sched.addJobListener(listener);

        // make sure the listener is associated with the job
        job.addJobListener(listener.getName());        
        
        // schedule the job to run
        sched.scheduleJob(job, trigger);
        
        // All of the jobs have been added to the scheduler, but none of the jobs
        // will run until the scheduler has been started
        log.info("------- Starting Scheduler ----------------");
        sched.start();

        // wait 30 seconds:
        // note:  nothing will run
        log.info("------- Waiting 30 seconds... --------------");
        try {
            // wait 30 seconds to show jobs
            Thread.sleep(30L * 1000L); 
            // executing...
        } catch (Exception e) {
        }
        
        
        // shut down the scheduler
        log.info("------- Shutting Down ---------------------");
        sched.shutdown(true);
        log.info("------- Shutdown Complete -----------------");

        SchedulerMetaData metaData = sched.getMetaData();
        log.info("Executed " + metaData.numJobsExecuted() + " jobs.");

    }

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

        ListenerExample example = new ListenerExample();
        example.run();
    }

}