Examples of org.quartz.Scheduler

org.quartz.Scheduler

This is the main interface of a Quartz Scheduler.

A Scheduler maintains a registry of {@link org.quartz.JobDetail} s and {@link Trigger}s. Once registered, the Scheduler is responsible for executing Job s when their associated Trigger s fire (when their scheduled time arrives).

Scheduler instances are produced by a {@link SchedulerFactory}. A scheduler that has already been created/initialized can be found and used through the same factory that produced it. After a Scheduler has been created, it is in "stand-by" mode, and must have its start() method called before it will fire any Jobs.

Job s are to be created by the 'client program', by defining a class that implements the {@link org.quartz.Job} interface. {@link JobDetail} objects are then created (also by the client) to define a individual instances of the Job. JobDetail instances can then be registered with the Scheduler via the scheduleJob(JobDetail, Trigger) or addJob(JobDetail, boolean) method.

Trigger s can then be defined to fire individual Job instances based on given schedules. SimpleTrigger s are most useful for one-time firings, or firing at an exact moment in time, with N repeats with a given delay between them. CronTrigger s allow scheduling based on time of day, day of week, day of month, and month of year.

Job s and Trigger s have a name and group associated with them, which should uniquely identify them within a single {@link Scheduler}. The 'group' feature may be useful for creating logical groupings or categorizations of Jobs s and Triggerss. If you don't have need for assigning a group to a given Jobs of Triggers, then you can use the DEFAULT_GROUP constant defined on this interface.

Stored Job s can also be 'manually' triggered through the use of the triggerJob(String jobName, String jobGroup) function.

Client programs may also be interested in the 'listener' interfaces that are available from Quartz. The {@link JobListener} interface provides notifications of Job executions. The {@link TriggerListener} interface provides notifications of Trigger firings. The {@link SchedulerListener} interface provides notifications of Scheduler events and errors.

The setup/configuration of a Scheduler instance is very customizable. Please consult the documentation distributed with Quartz.
@see Job @see JobDetail @see Trigger @see JobListener @see TriggerListener @see SchedulerListener @author James House @author Sharada Jambula

    trigger1.setStartDelay(0);
    trigger1.setRepeatInterval(20);
    trigger1.afterPropertiesSet();


    MockControl schedulerControl = MockControl.createControl(Scheduler.class);
    final Scheduler scheduler = (Scheduler) schedulerControl.getMock();
    scheduler.getContext();
    schedulerControl.setReturnValue(new SchedulerContext());
    scheduler.getTrigger("myTrigger0", Scheduler.DEFAULT_GROUP);
    schedulerControl.setReturnValue(null);
    scheduler.getTrigger("myTrigger1", Scheduler.DEFAULT_GROUP);
    schedulerControl.setReturnValue(new SimpleTrigger());
    if (overwrite) {
      scheduler.addJob(jobDetail1, true);
      schedulerControl.setVoidCallable();
      scheduler.rescheduleJob("myTrigger1", Scheduler.DEFAULT_GROUP, trigger1);
      schedulerControl.setReturnValue(new Date());
    }
    else {
      scheduler.getJobDetail("myJob0", Scheduler.DEFAULT_GROUP);
      schedulerControl.setReturnValue(null);
    }
    scheduler.addJob(jobDetail0, true);
    schedulerControl.setVoidCallable();
    scheduler.scheduleJob(trigger0);
    schedulerControl.setThrowable(new ObjectAlreadyExistsException(""));
    if (overwrite) {
      scheduler.rescheduleJob("myTrigger0", Scheduler.DEFAULT_GROUP, trigger0);
      schedulerControl.setReturnValue(new Date());
    }
    scheduler.start();
    schedulerControl.setVoidCallable();
    scheduler.shutdown(false);
    schedulerControl.setVoidCallable();
    schedulerControl.replay();


    SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean() {
      protected Scheduler createScheduler(SchedulerFactory schedulerFactory, String schedulerName) {

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  public void testSchedulerFactoryBeanWithListeners() throws Exception {
    JobFactory jobFactory = new AdaptableJobFactory();


    MockControl schedulerControl = MockControl.createControl(Scheduler.class);
    final Scheduler scheduler = (Scheduler) schedulerControl.getMock();


    SchedulerListener schedulerListener = new TestSchedulerListener();
    JobListener globalJobListener = new TestJobListener();
    JobListener jobListener = new TestJobListener();
    TriggerListener globalTriggerListener = new TestTriggerListener();
    TriggerListener triggerListener = new TestTriggerListener();


    scheduler.setJobFactory(jobFactory);
    schedulerControl.setVoidCallable();
    scheduler.addSchedulerListener(schedulerListener);
    schedulerControl.setVoidCallable();
    scheduler.addGlobalJobListener(globalJobListener);
    schedulerControl.setVoidCallable();
    scheduler.addJobListener(jobListener);
    schedulerControl.setVoidCallable();
    scheduler.addGlobalTriggerListener(globalTriggerListener);
    schedulerControl.setVoidCallable();
    scheduler.addTriggerListener(triggerListener);
    schedulerControl.setVoidCallable();
    scheduler.start();
    schedulerControl.setVoidCallable();
    scheduler.shutdown(false);
    schedulerControl.setVoidCallable();
    schedulerControl.replay();


    SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean() {
      protected Scheduler createScheduler(SchedulerFactory schedulerFactory, String schedulerName) {

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    trigger1.setStartTime(new Date());
    trigger1.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
    trigger1.setRepeatInterval(20);


    MockControl schedulerControl = MockControl.createControl(Scheduler.class);
    final Scheduler scheduler = (Scheduler) schedulerControl.getMock();
    scheduler.setJobFactory(jobFactory);
    schedulerControl.setVoidCallable();
    scheduler.getJobDetail("myJob0", Scheduler.DEFAULT_GROUP);
    schedulerControl.setReturnValue(null);
    scheduler.getJobDetail("myJob1", Scheduler.DEFAULT_GROUP);
    schedulerControl.setReturnValue(null);
    scheduler.getTrigger("myTrigger0", Scheduler.DEFAULT_GROUP);
    schedulerControl.setReturnValue(null);
    scheduler.getTrigger("myTrigger1", Scheduler.DEFAULT_GROUP);
    schedulerControl.setReturnValue(null);
    scheduler.addJob(jobDetail0, true);
    schedulerControl.setVoidCallable();
    scheduler.addJob(jobDetail1, true);
    schedulerControl.setVoidCallable();
    scheduler.scheduleJob(trigger0);
    schedulerControl.setReturnValue(new Date());
    scheduler.scheduleJob(trigger1);
    schedulerControl.setReturnValue(new Date());
    scheduler.start();
    schedulerControl.setVoidCallable();
    scheduler.shutdown(false);
    schedulerControl.setVoidCallable();
    schedulerControl.replay();


    SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean() {
      protected Scheduler createScheduler(SchedulerFactory schedulerFactory, String schedulerName) {

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  public void testSchedulerFactoryBeanWithApplicationContext() throws Exception {
    TestBean tb = new TestBean("tb", 99);
    StaticApplicationContext ac = new StaticApplicationContext();


    MockControl schedulerControl = MockControl.createControl(Scheduler.class);
    final Scheduler scheduler = (Scheduler) schedulerControl.getMock();
    SchedulerContext schedulerContext = new SchedulerContext();
    scheduler.getContext();
    schedulerControl.setReturnValue(schedulerContext, 4);
    scheduler.start();
    schedulerControl.setVoidCallable();
    scheduler.shutdown(false);
    schedulerControl.setVoidCallable();
    schedulerControl.replay();


    SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean() {
      protected Scheduler createScheduler(SchedulerFactory schedulerFactory, String schedulerName) {
        return scheduler;
      }
    };
    schedulerFactoryBean.setJobFactory(null);
    Map schedulerContextMap = new HashMap();
    schedulerContextMap.put("testBean", tb);
    schedulerFactoryBean.setSchedulerContextAsMap(schedulerContextMap);
    schedulerFactoryBean.setApplicationContext(ac);
    schedulerFactoryBean.setApplicationContextSchedulerContextKey("appCtx");
    try {
      schedulerFactoryBean.afterPropertiesSet();
      Scheduler returnedScheduler = (Scheduler) schedulerFactoryBean.getObject();
      assertEquals(tb, returnedScheduler.getContext().get("testBean"));
      assertEquals(ac, returnedScheduler.getContext().get("appCtx"));
    }
    finally {
      schedulerFactoryBean.destroy();
    }

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   */
  public void testMultipleSchedulers() throws Exception {
    ClassPathXmlApplicationContext ctx =
        new ClassPathXmlApplicationContext("/org/springframework/scheduling/quartz/multipleSchedulers.xml");
    try {
      Scheduler scheduler1 = (Scheduler) ctx.getBean("scheduler1");
      Scheduler scheduler2 = (Scheduler) ctx.getBean("scheduler2");
      assertNotSame(scheduler1, scheduler2);
      assertEquals("quartz1", scheduler1.getSchedulerName());
      assertEquals("quartz2", scheduler2.getSchedulerName());


      ClassPathXmlApplicationContext ctx2 =
          new ClassPathXmlApplicationContext("/org/springframework/scheduling/quartz/multipleSchedulers.xml");
      try {
        Scheduler scheduler1a = (Scheduler) ctx2.getBean("scheduler1");
        Scheduler scheduler2a = (Scheduler) ctx2.getBean("scheduler2");
        assertNotSame(scheduler1a, scheduler2a);
        assertNotSame(scheduler1a, scheduler1);
        assertNotSame(scheduler2a, scheduler2);
        assertEquals("quartz1", scheduler1a.getSchedulerName());
        assertEquals("quartz2", scheduler2a.getSchedulerName());
      }
      finally {
        ctx2.close();
      }
    }

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 * @author robh
 */
public class CronTriggerExample {


    public static void main(String[] args) throws Exception {
        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.start();


        JobDetail jobDetail = new JobDetail("messageJob",
                Scheduler.DEFAULT_GROUP, MessageJob.class);


        Map map = jobDetail.getJobDataMap();
        map.put("message", "This is a message from Quartz");


        String cronExpression = "3/5 * 14,15,16,17 * * ?";


        Trigger trigger = new CronTrigger("cronTrigger",
                Scheduler.DEFAULT_GROUP, cronExpression);


        scheduler.scheduleJob(jobDetail, trigger);
    }

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 * @author robh
 */
public class CronWithCalendarExample {


    public static void main(String[] args) throws Exception {
        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.start();
        
        // create a calendar to exclude a particular date
        Calendar cal = Calendar.getInstance();
        cal.set(2004, Calendar.DECEMBER, 25);
        
        HolidayCalendar calendar = new HolidayCalendar();
        calendar.addExcludedDate(cal.getTime());
        
        // add to scheduler
        scheduler.addCalendar("xmasCalendar", calendar, true, false);
        
        JobDetail jobDetail = new JobDetail("messageJob",
                Scheduler.DEFAULT_GROUP, MessageJob.class);


        Map map = jobDetail.getJobDataMap();
        map.put("message", "This is a message from Quartz");


        String cronExpression = "3/5 * 14,15,16,17 * * ?";


        Trigger trigger = new CronTrigger("cronTrigger",
                Scheduler.DEFAULT_GROUP, cronExpression);
        
        trigger.setCalendarName("xmasCalendar");


        scheduler.scheduleJob(jobDetail, trigger);
    }

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 * @author robh
 */
public class MessageScheduling {


    public static void main(String[] args) throws Exception{
        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.start();


        JobDetail jobDetail = new JobDetail("messageJob",
                Scheduler.DEFAULT_GROUP, MessageJob.class);
        
        Map map = jobDetail.getJobDataMap();
        map.put("message", "This is a message from Quartz");


        Trigger trigger = new SimpleTrigger("simpleTrigger",
                Scheduler.DEFAULT_GROUP, new Date(), null,
                SimpleTrigger.REPEAT_INDEFINITELY, 3000);
        
        scheduler.scheduleJob(jobDetail, trigger);
    }

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 */
public class HelloWorldScheduling {


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


        Scheduler scheduler = new StdSchedulerFactory().getScheduler();
        scheduler.start();


        JobDetail jobDetail = new JobDetail("helloWorldJob",
                Scheduler.DEFAULT_GROUP, HelloWorldJob.class);


        Trigger trigger = new SimpleTrigger("simpleTrigger",
                Scheduler.DEFAULT_GROUP, new Date(), null,
                SimpleTrigger.REPEAT_INDEFINITELY, 3000);
        
        scheduler.scheduleJob(jobDetail, trigger);
    }

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        }
        return answer;
    }


    protected Scheduler createScheduler() throws SchedulerException {
        Scheduler scheduler = getFactory().getScheduler();
        // register current camel context to scheduler so we can look it up when jobs is being triggered
        scheduler.getContext().put(QuartzConstants.QUARTZ_CAMEL_CONTEXT + "-" + getCamelContext().getName(), getCamelContext());
        return scheduler;
    }

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