io.vlingo.xoom.actors

Class CompletionTranslator<O,R>

java.lang.Object

io.vlingo.xoom.actors.CompletionTranslator<O,R>

Type Parameters:

O - the outcome value type of the internal Function<P,R>.

R - the return value type of the internal Function<P,R>.

public class CompletionTranslator<O,R>
extends Object

Supports providing a latent Completes<T> outcome by way of CompletesEventually. Used by StateObjectQueryActor to provide answers from queries that complete asynchronously to the original message delivery.

Method Summary

Modifier and Type	Method and Description
void	complete(O outcome) Completes the outcome by executing the Function<O,R> translator to produce the answer.
static <O,R> CompletionTranslator<O,R>	translatorOrNull(Function<O,R> translator, CompletesEventually completes) Answer a new instance of CompletionSupplier<R> if the supplier is not null; otherwise answer null.

Methods inherited from class java.lang.Object

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

Method Detail

translatorOrNull

public static <O,R> CompletionTranslator<O,R> translatorOrNull(Function<O,R> translator,
                                                               CompletesEventually completes)

Answer a new instance of CompletionSupplier<R> if the supplier is not null; otherwise answer null.

Type Parameters:

O - the outcome value type of the internal Function<P,R>.

R - the return value type of the internal Function<P,R>.

Parameters:

translator - the Function<P,R> of the eventual outcome, or null if none is provided

completes - the CompletesEventually through which the eventual outcome is sent

Returns:

CompletionBiSupplier<O,R>

complete

public void complete(O outcome)

Completes the outcome by executing the Function<O,R> translator to produce the answer.

Parameters:

outcome - the O outcome to be translated into a completion value