com.scaleoutsoftware.soss.client.util

Class TransformingFuture<T,V>

java.lang.Object

com.scaleoutsoftware.soss.client.util.TransformingFuture<T,V>

All Implemented Interfaces:

com.scaleoutsoftware.soss.client.da.ListenableFuture<T>, java.util.concurrent.Future<T>

public abstract class TransformingFuture<T,V>
extends java.lang.Object
implements com.scaleoutsoftware.soss.client.da.ListenableFuture<T>

An adapter class that delegates implementation of Future methods to an existing Future instance while providing a callback (transform(V)) to complete processing when the operation completes. The callback typically transforms the type of the delegate future into a future of a new type.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TransformingFuture(com.scaleoutsoftware.soss.client.da.ListenableFuture<V> delegateFuture)

Method Summary

Modifier and Type	Method and Description
void	addListener(com.scaleoutsoftware.soss.client.da.FutureListener<T> callback)
boolean	cancel(boolean mayInterruptIfRunning)
T	get()
T	get(long timeout, java.util.concurrent.TimeUnit unit)
boolean	isCancelled()
boolean	isDone()
void	removeListener(com.scaleoutsoftware.soss.client.da.FutureListener<T> callback)
protected abstract T	transform(V value)

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformingFuture

protected TransformingFuture(com.scaleoutsoftware.soss.client.da.ListenableFuture<V> delegateFuture)

Method Detail

transform

protected abstract T transform(V value)

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface java.util.concurrent.Future<T>

get

public T get()
      throws java.lang.InterruptedException,
             java.util.concurrent.ExecutionException

Specified by:

get in interface java.util.concurrent.Future<T>

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

get

public T get(long timeout,
             java.util.concurrent.TimeUnit unit)
      throws java.lang.InterruptedException,
             java.util.concurrent.ExecutionException,
             java.util.concurrent.TimeoutException

Specified by:

get in interface java.util.concurrent.Future<T>

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

java.util.concurrent.TimeoutException

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface java.util.concurrent.Future<T>

isDone

public boolean isDone()

Specified by:

isDone in interface java.util.concurrent.Future<T>

addListener

public void addListener(com.scaleoutsoftware.soss.client.da.FutureListener<T> callback)

Specified by:

addListener in interface com.scaleoutsoftware.soss.client.da.ListenableFuture<T>

removeListener

public void removeListener(com.scaleoutsoftware.soss.client.da.FutureListener<T> callback)

Specified by:

removeListener in interface com.scaleoutsoftware.soss.client.da.ListenableFuture<T>