Package com.google.common.util.concurrent

Class ForwardingFuture<V>

java.lang.Object

com.google.common.collect.ForwardingObject

com.google.common.util.concurrent.ForwardingFuture<V>

All Implemented Interfaces:

Future<V>

Direct Known Subclasses:

ForwardingFuture.SimpleForwardingFuture, ForwardingListenableFuture

public abstract class ForwardingFuture<V>
extends ForwardingObject
implements Future<V>

A Future which forwards all its method calls to another future. Subclasses should override one or more methods to modify the behavior of the backing future as desired per the decorator pattern.

Most subclasses can just use ForwardingFuture.SimpleForwardingFuture.

Since:

1.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ForwardingFuture.SimpleForwardingFuture<V>	A simplified version of ForwardingFuture where subclasses can pass in an already constructed Future as the delegate.

Method Summary

Modifier and Type	Method	Description
boolean	cancel(boolean mayInterruptIfRunning)
V	get()
V	get(long timeout, TimeUnit unit)
boolean	isCancelled()
boolean	isDone()

Methods inherited from class com.google.common.collect.ForwardingObject

toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface Future<V>

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface Future<V>

isDone

public boolean isDone()

Specified by:

isDone in interface Future<V>

get

public V get()
      throws InterruptedException,
             ExecutionException

Specified by:

get in interface Future<V>

Throws:

InterruptedException

ExecutionException

get

public V get(long timeout,
             TimeUnit unit)
      throws InterruptedException,
             ExecutionException,
             TimeoutException

Specified by:

get in interface Future<V>

Throws:

InterruptedException

ExecutionException

TimeoutException