io.vlingo.xoom.actors

Class CompletionSupplier<R>

java.lang.Object

io.vlingo.xoom.actors.CompletionSupplier<R>

Type Parameters:

R - the return value type of the internal Supplier<R>.

public class CompletionSupplier<R>
extends Object

Supports providing a latent Completes<T> outcome by way of CompletesEventually. Used by Sourced, ObjectEntity, and StateEntity to provide answers from methods that complete asynchronously to the original message delivery.

Method Summary

Modifier and Type	Method and Description
void	complete() Completes the outcome by executing the Supplier<T> for its answer.
static <RO> CompletionSupplier<RO>	supplierOrNull(Supplier<RO> supplier, 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

supplierOrNull

public static <RO> CompletionSupplier<RO> supplierOrNull(Supplier<RO> supplier,
                                                         CompletesEventually completes)

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

Type Parameters:

RO - the return type of the given supplier, if any

Parameters:

supplier - the Supplier<RO> of the eventual outcome, or null if none is provided

completes - the CompletesEventually through which the eventual outcome is sent

Returns:

CompletionSupplier<RO>

complete

public void complete()

Completes the outcome by executing the Supplier<T> for its answer.