edu.emory.mathcs.rmix.spi
Class CompletedRmixFuture

java.lang.Object
  edu.emory.mathcs.rmix.spi.CompletedRmixFuture

All Implemented Interfaces:

Future, Future, Rmix.Future

public class CompletedRmixFuture

extends java.lang.Object

implements Rmix.Future

Method Summary

boolean	cancel(boolean mayInterruptIfRunning) Always returns false.
static Rmix.Future	completed(java.lang.Object result) Creates a successfully completed future with specified result.
static Rmix.Future	completed(java.lang.Object result, Callback cb) Creates a successfully completed future with specified result and completion callback.
static Rmix.Future	failed(java.lang.Throwable cause) Creates a failed future with specified failure cause.
static Rmix.Future	failed(java.lang.Throwable cause, Callback cb) Creates a failed future with specified failure cause and completion callback.
java.lang.Object	get() Waits if necessary for the computation to complete, and then retrieves its result.
java.lang.Object	get(long timeout, TimeUnit granularity) Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.
boolean	isCancelled() Always returns false.
boolean	isDone() Always returns true.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

get

public java.lang.Object get()
                     throws ExecutionException

Description copied from interface: Future

Waits if necessary for the computation to complete, and then retrieves its result.

Specified by:

get in interface Future

Returns:

the computed result

Throws:

ExecutionException - if the computation threw an exception

get

public java.lang.Object get(long timeout,
                            TimeUnit granularity)
                     throws ExecutionException

Description copied from interface: Future

Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.

Specified by:

get in interface Future

Parameters:

timeout - the maximum time to wait

granularity - the time unit of the timeout argument

Returns:

the computed result

Throws:

ExecutionException - if the computation threw an exception

isDone

public boolean isDone()

Always returns true.

Specified by:

isDone in interface Future

Returns:

true

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Always returns false.

Specified by:

cancel in interface Future

Parameters:

mayInterruptIfRunning - true if the thread executing this task should be interrupted; otherwise, in-progress tasks are allowed to complete

Returns:

false

isCancelled

public boolean isCancelled()

Always returns false.

Specified by:

isCancelled in interface Future

Returns:

false

completed

public static Rmix.Future completed(java.lang.Object result)

Creates a successfully completed future with specified result.

Parameters:

result - the result of the future

Returns:

the completed future

completed

public static Rmix.Future completed(java.lang.Object result,
                                    Callback cb)

Creates a successfully completed future with specified result and completion callback. If not null, the callback is immediately notified about the completion.

Parameters:

result - the result of the future

cb - the callback to be notified about successful completion

Returns:

the completed future

failed

public static Rmix.Future failed(java.lang.Throwable cause)

Creates a failed future with specified failure cause.

Parameters:

cause - the cause of failure

Returns:

the completed future

failed

public static Rmix.Future failed(java.lang.Throwable cause,
                                 Callback cb)

Creates a failed future with specified failure cause and completion callback. If not null, the callback is immediately notified about the completion.

Parameters:

cause - the cause of failure

cb - the callback to be notified about failure

Returns:

the completed future