Package net.toddm.comm

Class NoResponseFuture

java.lang.Object

java.util.concurrent.FutureTask<Response>

net.toddm.comm.NoResponseFuture

All Implemented Interfaces:

Runnable, Future<Response>, RunnableFuture<Response>

public class NoResponseFuture
extends FutureTask<Response>

This is a simple no-op FutureTask implementation that simply returns a null Response. We provide this wrapping so that no special case code is ever required. Client code can still be written to, for example, block on future get() wait handles. In this case no result null is simply returned immediately.

Author:

Todd S. Murchison

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	NoResponseFuture()	Constructors a FutureTask instance that always immediately returns null.

Method Summary

Modifier and Type	Method	Description
Response	get()	Immediately returns null.
Response	get(long timeout, TimeUnit unit)	Immediately returns null.
boolean	isCancelled()	Always returns FALSE.
boolean	isDone()	Always returns TRUE.
void	run()	Does nothing.

Methods inherited from class java.util.concurrent.FutureTask

cancel, done, runAndReset, set, setException, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NoResponseFuture

protected NoResponseFuture()

Constructors a FutureTask instance that always immediately returns null.

Method Detail

get

public Response get()

Immediately returns null.

Specified by:

get in interface Future<Response>

Overrides:

get in class FutureTask<Response>

get

public Response get(long timeout,
                    TimeUnit unit)

Immediately returns null.

Specified by:

get in interface Future<Response>

Overrides:

get in class FutureTask<Response>

isCancelled

public boolean isCancelled()

Always returns FALSE.

Specified by:

isCancelled in interface Future<Response>

Overrides:

isCancelled in class FutureTask<Response>

isDone

public boolean isDone()

Always returns TRUE.

Specified by:

isDone in interface Future<Response>

Overrides:

isDone in class FutureTask<Response>

run

public void run()

Does nothing.

Specified by:

run in interface Runnable

Specified by:

run in interface RunnableFuture<Response>

Overrides:

run in class FutureTask<Response>