Package com.yahoo.jdisc.handler

Class FutureCompletion

java.lang.Object

com.google.common.util.concurrent.AbstractFuture<Boolean>

com.yahoo.jdisc.handler.FutureCompletion

All Implemented Interfaces:

com.google.common.util.concurrent.ListenableFuture<Boolean>, CompletionHandler, Future<Boolean>

public final class FutureCompletion
extends com.google.common.util.concurrent.AbstractFuture<Boolean>
implements CompletionHandler

This class provides an implementation of CompletionHandler that allows you to wait for either completed() or failed(Throwable) to be called. If failed() was called, the corresponding Throwable will be rethrown when calling either of the get() methods. Unless an exception is thrown, the get() methods will always return Boolean.TRUE.

Notice that calling cancel(boolean) throws an UnsupportedOperationException.

Author:

Simon Thoresen Hult

Constructor Summary

Constructors

Constructor	Description
FutureCompletion()

Method Summary

Modifier and Type	Method	Description
boolean	cancel(boolean mayInterruptIfRunning)
void	completed()	Invoked when an operation has completed.
void	failed(Throwable t)	Invoked when an operation fails.
boolean	isCancelled()

Methods inherited from class com.google.common.util.concurrent.AbstractFuture

addListener, afterDone, get, get, interruptTask, isDone, set, setException, setFuture, wasInterrupted

Methods inherited from class java.lang.Object

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

Constructor Detail

FutureCompletion

public FutureCompletion()

Method Detail

completed

public void completed()

Description copied from interface: CompletionHandler

Invoked when an operation has completed. Notice that you MUST call either this or CompletionHandler.failed(Throwable) to release the internal Container reference. Failure to do so will prevent the Container from ever shutting down.

Specified by:

completed in interface CompletionHandler

failed

public void failed(Throwable t)

Description copied from interface: CompletionHandler

Invoked when an operation fails. Notice that you MUST call either this or CompletionHandler.completed() to release the internal Container reference. Failure to do so will prevent the Container from ever shutting down.

Specified by:

failed in interface CompletionHandler

Parameters:

t - The exception to indicate why the I/O operation failed.

cancel

public final boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface Future<Boolean>

Overrides:

cancel in class com.google.common.util.concurrent.AbstractFuture<Boolean>

isCancelled

public final boolean isCancelled()

Specified by:

isCancelled in interface Future<Boolean>

Overrides:

isCancelled in class com.google.common.util.concurrent.AbstractFuture<Boolean>