com.amazonaws.services.simpleworkflow.flow.core

Class Functor<T>

java.lang.Object

com.amazonaws.services.simpleworkflow.flow.core.Promise<T>

com.amazonaws.services.simpleworkflow.flow.core.Functor<T>

public abstract class Functor<T>
extends Promise<T>

Constructor Summary

Constructors

Constructor and Description
Functor(Promise<?>... waitFor)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addCallback(Runnable callback) Compliant implementation should notify callbacks after promise is set to ready state.
protected abstract Promise<T>	doExecute()
T	get()
boolean	isReady()
protected void	removeCallback(Runnable callback)

Methods inherited from class com.amazonaws.services.simpleworkflow.flow.core.Promise

asPromise, getDescription, Void

Methods inherited from class java.lang.Object

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

Constructor Detail

Functor

public Functor(Promise<?>... waitFor)

Method Detail

doExecute

protected abstract Promise<T> doExecute()
                                 throws Throwable

Throws:

Throwable

get

public T get()

Specified by:

get in class Promise<T>

Returns:

result of your asynchronous computation

isReady

public boolean isReady()

Specified by:

isReady in class Promise<T>

Returns:

true if the result of your asynchronous computation is available

addCallback

protected void addCallback(Runnable callback)

Description copied from class: Promise

Compliant implementation should notify callbacks after promise is set to ready state.

Specified by:

addCallback in class Promise<T>

Parameters:

callback - callback to notify

removeCallback

protected void removeCallback(Runnable callback)

Specified by:

removeCallback in class Promise<T>