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

        if (jobPaused.get()) {
            return;
        }
        jobPaused.set(true);


        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler != null && !scheduler.isShutdown()) {
            LOG.info("Pausing trigger {}", triggerKey);
            scheduler.pauseTrigger(triggerKey);
        }
    }

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        if (!jobPaused.get()) {
            return;
        }
        jobPaused.set(false);


        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler != null) {
            LOG.info("Resuming trigger {}", triggerKey);
            scheduler.resumeTrigger(triggerKey);
        }
    }

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        }
        return answer;
    }


    protected Scheduler createScheduler() throws SchedulerException {
        Scheduler scheduler = getFactory().getScheduler();


        if (LOG.isDebugEnabled()) {
            LOG.debug("Using SchedulerFactory {} to get/create Scheduler {}({})",
                    new Object[]{getFactory(), scheduler, ObjectHelper.getIdentityHashCode(scheduler)});
        }


        // register current camel context to scheduler so we can look it up when jobs is being triggered
        // must use management name as it should be unique in the same JVM
        scheduler.getContext().put(QuartzConstants.QUARTZ_CAMEL_CONTEXT + "-" + getCamelContext().getManagementName(), getCamelContext());


        // store Camel job counter
        AtomicInteger number = (AtomicInteger) scheduler.getContext().get("CamelJobs");
        if (number == null) {
            number = new AtomicInteger(0);
            scheduler.getContext().put("CamelJobs", number);
        }


        return scheduler;
    }

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   * @throws SchedulerException
   **************************************************************************/
  @SuppressWarnings("deprecation")
  private static void startTimedJobs() throws SchedulerException {
    SchedulerFactory schedFact = new org.quartz.impl.StdSchedulerFactory();
    Scheduler sched = schedFact.getScheduler();
    sched.start();
    
    initializeJob(new HistoryAnalyserJob(), "dailyHistoryAnalyser", sched);
    initializeJobNonConfigured(new HotfolderJob(), 5, sched);
  }

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            return new StdSchedulerFactory();
        }
    }


    protected Scheduler createScheduler() throws SchedulerException {
        Scheduler scheduler = getFactory().getScheduler();
        scheduler.getContext().put(QuartzConstants.QUARTZ_CAMEL_CONTEXT, getCamelContext());
        return scheduler;
    }

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            defaultProperties.put(THREAD_NAME, name) ;
            if (!defaultProperties.containsKey(THREAD_COUNT))
            {
                defaultProperties.put(THREAD_COUNT, "1") ;
            }
            final Scheduler scheduler ;
            try
            {
                scheduler = new StdSchedulerFactory(defaultProperties).getScheduler();
                scheduler.start() ;
            }
            catch (final SchedulerException se)
            {
                throw new SchedulingException("Failed to initialise the scheduler", se) ;
            }

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        properties.put(THREAD_NAME, name) ;
        if (!properties.containsKey(THREAD_COUNT))
        {
            properties.put(THREAD_COUNT, "1") ;
        }
        final Scheduler scheduler ;
        try
        {
            scheduler = new StdSchedulerFactory(properties).getScheduler();
            scheduler.start() ;
        }
        catch (final SchedulerException se)
        {
            throw new JbpmException("Failed to initialise the scheduler", se) ;
        }

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    @Override
    public Date createJob() throws Exception {


        final QuartzResourceAdapter ra = (QuartzResourceAdapter) new InitialContext().lookup("java:openejb/Resource/QuartzResourceAdapter");
        final Scheduler s = ra.getScheduler();


        //Add a job type
        final JobDetail jd = new JobDetail("job1", "group1", JobBean.MyTestJob.class);
        jd.getJobDataMap().put("MyJobKey", "MyJobValue");


        //Schedule my 'test' job to run now
        final SimpleTrigger trigger = new SimpleTrigger("trigger1", "group1", new Date());
        return s.scheduleJob(jd, trigger);
    }

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        this.transacted = transactionType == TransactionType.Required || transactionType == TransactionType.RequiresNew;
        this.retryAttempts = retryAttempts;
    }


    public static synchronized Scheduler getDefaultScheduler() {
        Scheduler scheduler = SystemInstance.get().getComponent(Scheduler.class);
        if (scheduler == null) {
            Properties properties = new Properties();
            properties.put(StdSchedulerFactory.PROP_THREAD_POOL_CLASS, SystemInstance.get().hasProperty(QUARTZ_THREAD_POOL_ADAPTER) ? SystemInstance.get().getProperty(QUARTZ_THREAD_POOL_ADAPTER)
                    : DefaultTimerThreadPoolAdapter.class.getName());
            properties.put(StdSchedulerFactory.PROP_SCHED_INSTANCE_NAME, "OpenEJB-TimerService-Scheduler");
            try {
                scheduler = new StdSchedulerFactory(properties).getScheduler();
                scheduler.start();
                //durability is configured with true, which means that the job will be kept in the store even if no trigger is attached to it.
                //Currently, all the EJB beans share with the same job instance
                scheduler.addJob(new JobDetail(OPENEJB_TIMEOUT_JOB_NAME, OPENEJB_TIMEOUT_JOB_GROUP_NAME, EjbTimeoutJob.class, false, true, false), true);
            } catch (SchedulerException e) {
                throw new RuntimeException("Fail to initialize the default scheduler", e);
            }
            SystemInstance.get().setComponent(Scheduler.class, scheduler);
        }

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        return scheduler;
    }


    public static void shutdown() {


        Scheduler scheduler = SystemInstance.get().getComponent(Scheduler.class);
        if (scheduler != null) try {
            scheduler.shutdown();
        } catch (SchedulerException e) {
            throw new RuntimeException("Unable to shutdown scheduler", e);
        }


    }

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