org.nustaq.kontraktor.barebone

Class Promise<T>

java.lang.Object

org.nustaq.kontraktor.barebone.Callback<T>

org.nustaq.kontraktor.barebone.Promise<T>

All Implemented Interfaces:

Serializable

public class Promise<T>
extends Callback<T>

Created by ruedi on 05/06/15. A minimalistic Promise (~CompletableFuture) implementation using simple lock based synchronization

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Promise()

Method Summary

Modifier and Type	Method and Description
T	await() see await( long timeout )
T	await(long timeout) in contradiction to original kontraktor promise this is blocking as there are no "Actors" in the client :).
void	complete(T result, Object error) to be called by code returning an result or error.
void	receive(T result, Object error) to be called by code returning an result or error.
void	reject(Object error) shorthand for complete( null, error)
void	resolve(T result) shorthand for complete( result, null )
void	then(Callback<T> callback)

Methods inherited from class java.lang.Object

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

Constructor Detail

Promise

public Promise()

Method Detail

resolve

public void resolve(T result)

shorthand for complete( result, null )

Parameters:

result -

reject

public void reject(Object error)

shorthand for complete( null, error)

Parameters:

error -

complete

public void complete(T result,
                     Object error)

to be called by code returning an result or error.

Parameters:

result -

error -

then

public void then(Callback<T> callback)

receive

public void receive(T result,
                    Object error)

to be called by code returning an result or error.

Specified by:

receive in class Callback<T>

Parameters:

result -

error -

await

public T await()

see await( long timeout )

await

public T await(long timeout)

in contradiction to original kontraktor promise this is blocking as there are no "Actors" in the client :). awaits makes a synchronous method out of a async Promise-returning call. If the promise resolves to an error, an exceptions is thrown, else the result is returned.

Returns: