org.opendaylight.vtn.manager.internal.util.concurrent

Class CanceledFuture<T>

java.lang.Object

org.opendaylight.vtn.manager.internal.util.concurrent.AbstractVTNFuture<T>

org.opendaylight.vtn.manager.internal.util.concurrent.CanceledFuture<T>

Type Parameters:

T - The type of the object to be returned.

All Implemented Interfaces:

com.google.common.util.concurrent.CheckedFuture<T,VTNException>, com.google.common.util.concurrent.ListenableFuture<T>, Future<T>, VTNFuture<T>

public final class CanceledFuture<T>
extends AbstractVTNFuture<T>

An implementation of VTNFuture that cancels the task immediately.

Constructor Summary

Constructors

Constructor and Description
CanceledFuture()

Method Summary

Modifier and Type	Method and Description
boolean	cancel(boolean intr) Attempt to cancel execution of the task.
T	get() A CancellationException is always thrown.
T	get(long timeout, TimeUnit unit) A CancellationException is always thrown.
boolean	isCancelled() Determine whether the task was canceled before it completed normally.
boolean	isDone() Determine whether the task completed or not.

Methods inherited from class org.opendaylight.vtn.manager.internal.util.concurrent.AbstractVTNFuture

addListener, done, getCause, getException

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opendaylight.vtn.manager.internal.util.concurrent.VTNFuture

checkedGet, checkedGet

Constructor Detail

CanceledFuture

public CanceledFuture()

Method Detail

cancel

public boolean cancel(boolean intr)

Attempt to cancel execution of the task.

Parameters:

intr - Unused.

Returns:

true.

isCancelled

public boolean isCancelled()

Determine whether the task was canceled before it completed normally.

Returns:

true.

isDone

public boolean isDone()

Determine whether the task completed or not.

Returns:

true.

get

public T get()

A CancellationException is always thrown.

Returns:

Never returns.

Throws:

CancellationException - Always thrown.

get

public T get(long timeout,
             TimeUnit unit)

A CancellationException is always thrown.

Parameters:

timeout - Unused.

unit - Unused.

Returns:

Never returns.

Throws:

CancellationException - Always thrown.