Examples of java.util.concurrent.ExecutorService.submit()

Class java.util.concurrent.ExecutorService

Examples of java.util.concurrent.ExecutorService.submit()

java.util.concurrent.ExecutorService.submit()
Submits a value-returning task for execution and returns a Future representing the pending results of the task. The Future's {@code get} method will return the task's result uponsuccessful completion.
If you would like to immediately block waiting for a task, you can use constructions of the form {@code result = exec.submit(aCallable).get();}
Note: The {@link Executors} class includes a set of methodsthat can convert some other common closure-like objects, for example, {@link java.security.PrivilegedAction} to{@link Callable} form so they can be submitted. @param task the task to submit @param < T> the type of the task's result @return a Future representing pending completion of the task @throws RejectedExecutionException if the task cannot bescheduled for execution @throws NullPointerException if the task is null

        future.get((connectTimeoutMillis + readTimeoutMillis), TimeUnit.MILLISECONDS);
    }
  
  public void connectToServer() throws Exception {    
    ExecutorService executor = Executors.newSingleThreadExecutor();    
        Future<Boolean> future = executor.submit(new Callable<Boolean>() {
            public Boolean call() throws Exception {
              _services = ClientFactory.createCoreServiceClient(_url.toString());
        _session = _services.adminLogin(_user, _password);
        return Boolean.TRUE;
            }

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                        tables.put(shippedId, joinTable);
                    }
                    return joinTable;
                }
            };
            final Future<JoinTable> future = ex.submit(call);
            final Sequence<? extends Item> mapped;
            try {
                mapped = map(contextSeq, dynEnv, future);
            } catch (InterruptedException e) {
                ex.shutdownNow();

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        if (!executors.containsKey(repo))
            executors.put(repo, Executors.newSingleThreadExecutor());


        final ExecutorService service = executors.get(repo);
        LOG.trace("Submitting fetch task for repo executor " + repo.getRootURI());
        return service.submit(new ChildFetcher(pPathElement));
    }


    private class ChildFetcher implements Callable<RepoPathElement[]> {
        private final RepoPathElement pathElement;

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            ExecutorService service = Executors.newFixedThreadPool(threads + 1);
            convertConsumer[] consumers = new convertConsumer[threads];
            Future<?>[] consumerResults = new Future[threads];
            for (int i = 0; i < threads; i++) {
                consumers[i] = new convertConsumer(in, out, poison);
                consumerResults[i] = service.submit(consumers[i]);
            }
            convertWriter   writer = new convertWriter(out, poison, targetdir, targetstub);
            Future<Integer> writerResult = service.submit(writer);
            
            wikiparserrecord record;

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            for (int i = 0; i < threads; i++) {
                consumers[i] = new convertConsumer(in, out, poison);
                consumerResults[i] = service.submit(consumers[i]);
            }
            convertWriter   writer = new convertWriter(out, poison, targetdir, targetstub);
            Future<Integer> writerResult = service.submit(writer);
            
            wikiparserrecord record;
            int q;
            while ((t = r.readLine()) != null) {
                if ((p = t.indexOf("<base>")) >= 0 && (q = t.indexOf("</base>", p)) > 0) {

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        // init reader, producer and consumer
        PositionAwareReader in = new PositionAwareReader(dumpFile);
        indexProducer producer = new indexProducer(100, idxFromWikimediaXML(dumpFile));
        wikiConsumer consumer = new wikiConsumer(100, producer);
        ExecutorService service = Executors.newFixedThreadPool(2);
        Future<Integer> producerResult = service.submit(consumer);
        Future<Integer> consumerResult = service.submit(producer);
        service.shutdown();
        
        // read the wiki dump
        long start, stop;

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        PositionAwareReader in = new PositionAwareReader(dumpFile);
        indexProducer producer = new indexProducer(100, idxFromWikimediaXML(dumpFile));
        wikiConsumer consumer = new wikiConsumer(100, producer);
        ExecutorService service = Executors.newFixedThreadPool(2);
        Future<Integer> producerResult = service.submit(consumer);
        Future<Integer> consumerResult = service.submit(producer);
        service.shutdown();
        
        // read the wiki dump
        long start, stop;
        while (in.seek(pagestartb)) {

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     * @return
     */
    public final static initDataConsumer asynchronusInitializer(final String name, final int keylength, final ByteOrder objectOrder, final int idxbytes, final int expectedspace) {
        final initDataConsumer initializer = new initDataConsumer(new HandleMap(keylength, objectOrder, idxbytes, expectedspace, name));
        final ExecutorService service = Executors.newSingleThreadExecutor();
        initializer.setResult(service.submit(initializer));
        service.shutdown();
        return initializer;
    }


    private final static class entry {

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        // create a concurrent thread that consumes data as it is read
        // and computes the md5 while doing IO
        final md5FilechunkConsumer md5consumer = new md5FilechunkConsumer(1024 * 64, 8);
        final ExecutorService service = Executors.newSingleThreadExecutor();
        final Future<MessageDigest> md5result = service.submit(md5consumer);
        service.shutdown();


        filechunk c;
        try {
            while (true) {

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     * @throws ExecutionException
     */
    public E call(final long timeout) throws ExecutionException {
        final ExecutorService service = Executors.newSingleThreadExecutor();
        try {
            final Future<E> taskFuture = service.submit(this.call);
            final Runnable t = new Runnable() {
                public void run() { taskFuture.cancel(true); }
            };
            service.execute(t);
            service.shutdown();

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