Examples of javax.enterprise.concurrent.Trigger

javax.enterprise.concurrent.Trigger

Triggers allow application developers to plug in rules for when and how often a task should run. The trigger can be as simple as a single, absolute date-time or can include Java™ EE business calendar logic. A Trigger implementation is created by the application developer (or may be supplied to the application externally) and is registered with a task when it is submitted to a {@link ManagedScheduledExecutorService} using any of the schedule methods. Each method will run with unspecified context unless {@link ManagedTask#CONTEXTUAL_CALLBACK_HINT} is specified to control whetheror not these callback methods run under the same context in which the task runs.

Each Trigger instance will be invoked within the same process in which it was registered.

Trigger should be Serializable if it is to be used on a distributed {@code ManagedScheduledExecutorService}.

Example:

 / * A trigger that only returns a single date. */ public class SingleDateTrigger implements Trigger { private Date fireTime; public TriggerSingleDate(Date newDate) { fireTime = newDate; } public Date getNextRunTime( LastExecution lastExecutionInfo, Date taskScheduledTime) { if(taskScheduledTime.after(fireTime)) { return null; } return fireTime; } public boolean skipRun(LastExecution lastExecutionInfo, Date scheduledRunTime) { return scheduledRunTime.after(fireTime); } } / * A fixed-rate trigger that will skip any runs if * the latencyAllowance threshold is exceeded (the task * ran too late). */ public class TriggerFixedRateLatencySensitive implements Trigger { private Date startTime; private long delta; private long latencyAllowance; public TriggerFixedRateLatencySensitive(Date startTime, long delta, long latencyAllowance) { this.startTime = startTime; this.delta = delta; this.latencyAllowance = latencyAllowance; } public Date getNextRunTime(LastExecution lastExecutionInfo,  Date taskScheduledTime) { if(lastExecutionInfo==null) { return startTime; } return new Date(lastExecutionInfo.getScheduledStart().getTime() + delta); } public boolean skipRun(LastExecution lastExecutionInfo, Date scheduledRunTime) { return System.currentTimeMillis() - scheduledRunTime.getTime() > latencyAllowance; } }

@since 1.0

        final ManagedScheduledExecutorService es = new ManagedScheduledExecutorServiceImplFactory().create();
        final CountDownLatch counter = new CountDownLatch(5);
        final FutureAwareCallable callable = new FutureAwareCallable(counter);


        final ScheduledFuture<?> future = es.schedule(Runnable.class.cast(callable),
            new Trigger() {
                @Override
                public Date getNextRunTime(final LastExecution lastExecutionInfo, final Date taskScheduledTime) {
                    if (lastExecutionInfo == null) {
                        return new Date();
                    }

View Full Code Here

        final ManagedScheduledExecutorService es = new ManagedScheduledExecutorServiceImplFactory().create();
        final CountDownLatch counter = new CountDownLatch(5);
        final FutureAwareCallable callable = new FutureAwareCallable(counter);


        final Future<Long> future = es.schedule((Callable<Long>) callable,
            new Trigger() {
                @Override
                public Date getNextRunTime(final LastExecution lastExecutionInfo, final Date taskScheduledTime) {
                    if (lastExecutionInfo == null) {
                        return new Date();
                    }

View Full Code Here

        final ManagedScheduledExecutorService es = new ManagedScheduledExecutorServiceImplFactory().create();
        final CountDownLatch counter = new CountDownLatch(5);
        final FutureAwareCallable callable = new FutureAwareCallable(counter);


        final ScheduledFuture<?> future = es.schedule(Runnable.class.cast(callable),
            new Trigger() {
                @Override
                public Date getNextRunTime(final LastExecution lastExecutionInfo, final Date taskScheduledTime) {
                    if (lastExecutionInfo == null) {
                        return new Date();
                    }

View Full Code Here

        final ManagedScheduledExecutorService es = new ManagedScheduledExecutorServiceImplFactory().create();
        final AtomicInteger counter = new AtomicInteger(0);
        final FutureAwareCallable callable = new FutureAwareCallable(counter);


        final Future<Integer> future = es.schedule((Callable<Integer>) callable,
                new Trigger() {
                    @Override
                    public Date getNextRunTime(LastExecution lastExecutionInfo, Date taskScheduledTime) {
                        if (lastExecutionInfo == null) {
                            return new Date();
                        }

View Full Code Here

        final ManagedScheduledExecutorService es = new ManagedScheduledExecutorServiceImplFactory().create();
        final AtomicInteger counter = new AtomicInteger(0);
        final FutureAwareCallable callable = new FutureAwareCallable(counter);


        final ScheduledFuture<?> future = es.schedule(Runnable.class.cast(callable),
                new Trigger() {
                    @Override
                    public Date getNextRunTime(LastExecution lastExecutionInfo, Date taskScheduledTime) {
                        if (lastExecutionInfo == null) {
                            return new Date();
                        }

View Full Code Here

    @Resource
    private ManagedScheduledExecutorService executor;


    @Override
    public void runJob() {
        executor.schedule(createJob(), new Trigger() {


            @Override
            public Date getNextRunTime(LastExecution lastExecutionInfo, Date taskScheduledTime) {
                if (MyJob.executedBatchs.size() >= 3) {
                    return null;

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Related Classes of javax.enterprise.concurrent.Trigger

org.apache.openejb.concurrencyutilities.test.ManagedScheduledExecutorServiceTest

org.apache.openejb.threads.ManagedScheduledExecutorServiceTest

org.javaee7.batch.samples.scheduling.MyManagedScheduledBatchBean

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