Examples of org.jboss.seam.cron.spi.asynchronous.support.FutureInvokerSupport

Package org.jboss.seam.cron.spi.asynchronous.support

Examples of org.jboss.seam.cron.spi.asynchronous.support.FutureInvokerSupport

org.jboss.seam.cron.spi.asynchronous.support.FutureInvokerSupport

Creates a # {@link Callable} whose #{@literal call} method will block until the # {@literal executeInvocationContext()} method is called. This comes inhandy when returning Futures (eg: # {@literal new FutureTask(new FutureInvokerSupport(invoker))}).
In the simplest case # {@literal executeInvocationContext()} could be called in the same thread prior to calling # {@literal call()}. This is useful when your method of executing in the background is also # {@link Runnable} or # {@link Callable} and can thus be used to return a #{@link RunnableFuture}.
In more complex cases # {@literal executeInvocationContext()} could be called by a separate thread at any time before or after the current thread calls # {@literal call()}. This is useful when your method of executing in the background is fairly arbitrary (eg a Quartz Job scheduled for the near future), and you need to be able to return a # {@literal new FutureTask(callable)} immediatelybut trigger the processing on that callable some arbitrary way (ie: inside the Quartz Job implementation).

See the Seam Cron Asynchronous Provider projects for the Threads and Quartz providers to see this in action (providers/scheduling/quartz and providers/asynchronous/threads).
@author peteroyle

public class FutureInvoker implements RunnableFuture {


    private final RunnableFuture delegate;


    public FutureInvoker(final Invoker invoker) {
        delegate = new FutureTask(new CallableFutureInvoker(new FutureInvokerSupport(invoker)));
    }

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        new Thread(asyncResult).start();
        return asyncResult;
    }


    private FutureInvokerSupport executeMethodAsScheduledJob(final Invoker invoker) throws AsynchronousMethodInvocationException {
        final FutureInvokerSupport drs = new FutureInvokerSupport(invoker);
        try {
            final String name = UUID.randomUUID().toString();
            JobDetail jobDetail = new JobDetail(name, ASYNC_JOB_GROUP, AsyncMethodInvocationJob.class);
            jobDetail.getJobDataMap().put(DELAYED_RESULT_SUPPORT, drs);
            scheduler.scheduleJob(jobDetail, TriggerUtils.makeImmediateTrigger(name, 0, 1));

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 */
public class AsyncMethodInvocationJob implements Job {


    public void execute(final JobExecutionContext context) throws JobExecutionException {
        try {
            final FutureInvokerSupport resultCallable = (FutureInvokerSupport) context.getJobDetail().getJobDataMap().get(QuartzAsynchronousProvider.DELAYED_RESULT_SUPPORT);
            resultCallable.executeInvocationContext();
        } catch (Exception ex) {
            throw new JobExecutionException("Error invoking method inside a Quartz Job", ex);
        }
    }

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            queue = (Queue)queueProvider.getQueue(queueId);
        }
        JavaProcessBuilder jpb = queue.newProcessBuilder(Locale.getDefault());
        final String jobName = UUID.randomUUID().toString();
        jpb.setProcessName(jobName);
        final FutureInvokerSupport drs = new FutureInvokerSupport(invoker);
        jpb.setProcessDetails(new AsyncMethodInvocationJob(), "execute", new Class[] { FutureInvokerSupport.class }, new Object[] { drs });
        jpb.setProcessPersistence(false);
        jpb.newProcess();
        return drs;
    }

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Related Classes of org.jboss.seam.cron.spi.asynchronous.support.FutureInvokerSupport

org.jboss.seam.cron.asynchronous.queuj.QueuJAsynchronousProvider

org.jboss.seam.cron.asynchronous.threads.AsyncMethodInvocationJob

org.jboss.seam.cron.asynchronous.threads.FutureInvoker

org.jboss.seam.cron.asynchronous.threads.QuartzAsynchronousProvider

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