Package org.forgerock.openig.tools

Class FutureUtils

java.lang.Object

org.forgerock.openig.tools.FutureUtils

public final class FutureUtils
extends Object

Utility class for Futures and Promises.

Method Summary

Modifier and Type	Method	Description
static <T, E extends Exception> Promise<T,E>	futureToPromise(CompletionStage<T> completionStage, Class<E> exceptionType)	Converts a CompletionStage to a Promise.
static <T, E extends Exception> CompletableFuture<T>	promiseToFuture(Promise<T,E> promise)	Converts a Promise to a CompletableFuture.

Methods inherited from class java.lang.Object

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

Method Details

promiseToFuture

public static <T,
E extends Exception>
CompletableFuture<T> promiseToFuture(Promise<T,E> promise)

Converts a Promise to a CompletableFuture.

Type Parameters:

T - The type's result of the promise.

E - The type of the exception thrown by the promise.

Parameters:

promise - The promise to convert.

Returns:

The equivalent CompletableFuture.

futureToPromise

public static <T,
E extends Exception> Promise<T,E> futureToPromise(CompletionStage<T> completionStage,
 Class<E> exceptionType)

Converts a CompletionStage to a Promise.

Type Parameters:

T - The type's result expected by the promise.

E - The type of the exception expected by the promise.

Parameters:

completionStage - The completion stage to convert.

exceptionType - The expected exception type, not null.

Returns:

The equivalent as a Promise.

Throws:

NullPointerException - if the exceptionType is null.