org.jperipheral

Class TransformingFuture<I,O>

java.lang.Object

org.jperipheral.TransformingFuture<I,O>

Type Parameters:

I - the return value of the delegate

O - the return value of this Future

All Implemented Interfaces:

Future<O>

public abstract class TransformingFuture<I,O>
extends Object
implements Future<O>

Forwards calls to another Future. Thread safety: The class is thread-safe if delegate is only modified by the constructor or if the subclass synchronizes the get(long, TimeUnit) method.

Author:

Gili Tzabari

Field Summary

Fields

Modifier and Type	Field and Description
protected Future<I>	delegate

Constructor Summary

Constructors

Constructor and Description
TransformingFuture(Future<I> delegate) Creates a new ForwardingFuture.

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Field Detail

delegate

protected Future<I> delegate

Constructor Detail

TransformingFuture

public TransformingFuture(Future<I> delegate)

Creates a new ForwardingFuture.

Parameters:

delegate - the Future to forward calls to

Throws:

NullPointerException - if input is null

Method Detail

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface Future<O>

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface Future<O>

isDone

public boolean isDone()

Specified by:

isDone in interface Future<O>

get

public O get()
      throws InterruptedException,
             ExecutionException

Specified by:

get in interface Future<O>

Throws:

InterruptedException

ExecutionException

get

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

Specified by:

get in interface Future<O>

Throws:

InterruptedException

ExecutionException

TimeoutException