Examples of java.util.concurrent.Future

java.util.concurrent.Future
ther things while searching try { displayText(future.get()); // use future } catch (ExecutionException ex) { cleanup(); return; } } }} The {@link FutureTask} class is an implementation of {@code Future} thatimplements {@code Runnable}, and so may be executed by an {@code Executor}. For example, the above construction with {@code submit} could be replaced by:
```
  {@code FutureTask future =}new FutureTask(new Callable()  public String call() { return searcher.search(target); }}); executor.execute(future);}
```
Memory consistency effects: Actions taken by the asynchronous computation happen-before actions following the corresponding {@code Future.get()} in another thread. @see FutureTask @see Executor @since 1.5 @author Doug Lea @param < V> The result type returned by this Future's {@code get} method

    public void finished(PendingFile remoteFile, PendingFile localFile) throws IOException
    {
        if (logger.isDebugEnabled())
            logger.debug("Finished {}. Sending ack to {}", remoteFile, this);


        Future future = CompactionManager.instance.submitSSTableBuild(localFile.desc);
        buildFutures.add(future);


        files.remove(remoteFile);
        if (remoteFile.equals(current))
            current = null;

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        List<Future> updates = new ArrayList<Future>();
        Collection<IColumn> migrations = Migration.getLocalMigrations(from, to);
        for (IColumn col : migrations)
        {
            final Migration migration = Migration.deserialize(col.value());
            Future update = StageManager.getStage(Stage.MIGRATION).submit(new Runnable()
            {
                public void run()
                {
                    try
                    {

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    // helper method to apply migration on the migration stage. typical migration failures will throw an 
    // InvalidRequestException. atypical failures will throw a RuntimeException.
    private static void applyMigrationOnStage(final Migration m)
    {
        Future f = StageManager.getStage(Stage.MIGRATION).submit(new WrappedRunnable()
        {
            public void runMayThrow() throws Exception
            {
                m.apply();
                m.announce();

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    // helper method to apply migration on the migration stage. typical migration failures will throw an 
    // InvalidRequestException. atypical failures will throw a RuntimeException.
    private static void applyMigrationOnStage(final Migration m)
    {
        Future f = StageManager.getStage(Stage.MIGRATION).submit(new Callable()
        {
            public Object call() throws Exception
            {
                m.apply();
                m.announce();
                return null;
            }
        });
        try
        {
            f.get();
        }
        catch (InterruptedException e)
        {
            throw new AssertionError(e);
        }

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      cache.put(id, new NotIndexedType("name1"));


      Map<Object, Object> map = new HashMap<Object, Object>();
      map.put(id, new TestEntity("name2", "surname2", id, "note"));
      Future futureTask = cache.putAllAsync(map);
      futureTask.get();
      assertTrue(futureTask.isDone());
      CacheQuery q1 = queryByNameField("name2", AnotherTestEntity.class);
      assertEquals(1, q1.getResultSize());
      assertEquals(TestEntity.class, q1.list().get(0).getClass());
   }

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      assertEquals(1, q1.getResultSize());
      assertEquals(TestEntity.class, q1.list().get(0).getClass());


      Map<Object, Object> map = new HashMap<Object, Object>();
      map.put(id, new NotIndexedType("name2"));
      Future futureTask = cache.putAllAsync(map);
      futureTask.get();
      assertTrue(futureTask.isDone());
      CacheQuery q2 = queryByNameField("name1", TestEntity.class);
      assertEquals(0, q2.getResultSize());


      CacheQuery q3 = queryByNameField("name2", TestEntity.class);
      assertEquals(0, q3.getResultSize());

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      allWrites.put(key1, person1);
      allWrites.put(key2, person2);
      allWrites.put(key3, person3);
      allWrites.put("newGoat", person4);


      Future futureTask = cache2.putAllAsync(allWrites);
      futureTask.get();
      assert futureTask.isDone();
      List found = searchManager.getQuery(allQuery, Person.class).list();
      AssertJUnit.assertEquals(4, found.size());
      assert found.contains(person4);


      futureTask = cache1.putAllAsync(allWrites);
      futureTask.get();
      assert futureTask.isDone();
      found = searchManager.getQuery(allQuery, Person.class).list();
      AssertJUnit.assertEquals(4, found.size());
      assert found.contains(person4);
   }

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      person4 = new Person();
      person4.setName("New Goat");
      person4.setBlurb("Also eats grass");


      Future futureTask = cache2.putIfAbsentAsync("newGoat", person4);
      futureTask.get();
      assert futureTask.isDone();
      List found = searchManager.getQuery(allQuery, Person.class).list();
      AssertJUnit.assertEquals(4, found.size());
      assert found.contains(person4);


      Person person5 = new Person();
      person5.setName("Abnormal Goat");
      person5.setBlurb("Plays with grass.");
      futureTask = cache2.putIfAbsentAsync("newGoat", person5);
      futureTask.get();
      assert futureTask.isDone();
      found = searchManager.getQuery(allQuery, Person.class).list();
      AssertJUnit.assertEquals(4, found.size());
      assert !found.contains(person5);
      assert found.contains(person4);
   }

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      person4 = new Person();
      person4.setName("New Goat");
      person4.setBlurb("Also eats grass");


      Future f = cache2.putAsync("newGoat", person4);
      f.get();
      assert f.isDone();
      List found = searchManager.getQuery(allQuery, Person.class).list();
      AssertJUnit.assertEquals(4, found.size());
      assert found.contains(person4);


      Person person5 = new Person();
      person5.setName("Abnormal Goat");
      person5.setBlurb("Plays with grass.");
      f = cache2.putAsync("newGoat", person5);
      f.get();
      assert f.isDone();
      found = searchManager.getQuery(allQuery, Person.class).list();
      AssertJUnit.assertEquals(4, found.size());
      assert !found.contains(person4);
      assert found.contains(person5);
   }

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        if(! (operation.getInterface() instanceof WSDLInterface)) {
            throw new InvocationTargetException(null,"Unsupported service contract");
        }
        
        org.apache.ode.bpel.iapi.MyRoleMessageExchange mex = null;
        Future onhold = null;
        
        //Process the BPEL process invocation
        try {
            txMgr.begin();
            mex = odeServer.getBpelServer().getEngine().createMessageExchange(new GUID().toString(),
                                                                              bpelServiceName,
                                                                              bpelOperationName);
            onhold = mex.invoke(createInvocationMessage(mex, args));
            
            txMgr.commit();
        } catch (Exception e) {
            try {
                txMgr.rollback();
            } catch (SystemException se) {


            }
            throw new InvocationTargetException(e, "Error invoking BPEL process : " + e.getMessage());
        } 




        // Waiting until the reply is ready in case the engine needs to continue in a different thread
        if (onhold != null) {
            try {
                onhold.get();
            } catch (Exception e) {
                throw new InvocationTargetException(e,"Error invoking BPEL process : " + e.getMessage());
            }
        }

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