Package com.google.common.util.concurrent

Class ClosingFuture.ValueAndCloser<V>

java.lang.Object

com.google.common.util.concurrent.ClosingFuture.ValueAndCloser<V>

Type Parameters:

V - the type of the value of a successful operation

Enclosing class:

ClosingFuture<V>

public static final class ClosingFuture.ValueAndCloser<V>
extends Object

An object that holds the final result of an asynchronous ClosingFuture operation and allows the user to close all the closeable objects that were captured during it for later closing.

The asynchronous operation will have completed before this object is created.

See Also:

ClosingFuture.finishToValueAndCloser(ValueAndCloserConsumer, Executor)

Method Summary

Modifier and Type	Method	Description
void	closeAsync()	Starts closing all closeable objects captured during the ClosingFuture's asynchronous operation on the Executors specified by calls to DeferredCloser#eventuallyClose(Closeable, Executor).
@Nullable V	get()	Returns the final value of the associated ClosingFuture, or throws an exception as Future.get() would.

Methods inherited from class java.lang.Object

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

Method Detail

get

public @Nullable V get()
                throws ExecutionException

Returns the final value of the associated ClosingFuture, or throws an exception as Future.get() would.

Because the asynchronous operation has already completed, this method is synchronous and returns immediately.

Throws:

CancellationException - if the computation was cancelled

ExecutionException - if the computation threw an exception

closeAsync

public void closeAsync()

Starts closing all closeable objects captured during the ClosingFuture's asynchronous operation on the Executors specified by calls to DeferredCloser#eventuallyClose(Closeable, Executor).

If any such calls specified MoreExecutors.directExecutor(), those objects will be closed synchronously.

Idempotent: objects will be closed at most once.