com.github.mizool.core.concurrent

Class Futures

java.lang.Object

com.github.mizool.core.concurrent.Futures

public class Futures
extends Object

Constructor Summary

Constructors

Constructor and Description
Futures()

Method Summary

Modifier and Type	Method and Description
<V> V	get(Future<V> future) Waits if necessary for the computation to complete, and then retrieves its result.
CompletableFuture<Void>	toVoidResult(CompletableFuture<?> future) Transforms any CompletableFuture into a CompletableFuture without result.
com.google.common.util.concurrent.ListenableFuture<Void>	toVoidResult(com.google.common.util.concurrent.ListenableFuture<?> future) Transforms any ListenableFuture into a ListenableFuture without result.

Methods inherited from class java.lang.Object

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

Constructor Detail

Futures

public Futures()

Method Detail

get

public <V> V get(Future<V> future)

Waits if necessary for the computation to complete, and then retrieves its result.

Returns:

the computed result

Throws:

CancellationException - if the computation was cancelled

com.google.common.util.concurrent.UncheckedExecutionException - if the computation threw an exception

UncheckedInterruptedException - if the current thread was interrupted while waiting. The interrupted status of the current thread is still set correctly.

toVoidResult

public com.google.common.util.concurrent.ListenableFuture<Void> toVoidResult(com.google.common.util.concurrent.ListenableFuture<?> future)

Transforms any ListenableFuture into a ListenableFuture without result. Exceptions that are thrown by the original future are handled transparently.

The returned future does not contain a reference to the original future. That allows to reduce the overall memory footprint when working with multiple futures at once without caring for the results.

Parameters:

future - the future to wrap

Returns:

a void future

toVoidResult

public CompletableFuture<Void> toVoidResult(CompletableFuture<?> future)

Transforms any CompletableFuture into a CompletableFuture without result. Exceptions that are thrown by the original future are handled transparently.

The returned future does not contain a reference to the original future. That allows to reduce the overall memory footprint when working with multiple futures at once without caring for the results.

Parameters:

future - the future to wrap

Returns:

a void future