org.apache.beam.runners.samza.util

Class FutureUtils

java.lang.Object

org.apache.beam.runners.samza.util.FutureUtils

public final class FutureUtils
extends java.lang.Object

A util class to handle java 8 CompletableFuture and CompletionStage.

Constructor Summary

Constructors

Constructor and Description
FutureUtils()

Method Summary

Modifier and Type	Method and Description
static <T> java.util.concurrent.CompletionStage<java.util.Collection<T>>	combineFutures(java.util.concurrent.CompletionStage<java.util.Collection<T>> future1, java.util.concurrent.CompletionStage<java.util.Collection<T>> future2)
static <T> java.util.concurrent.CompletionStage<java.util.Collection<T>>	flattenFutures(java.util.Collection<java.util.concurrent.CompletionStage<T>> inputFutures) Flattens the input future collection and returns a single future comprising the results of all the futures.

Methods inherited from class java.lang.Object

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

Constructor Detail

FutureUtils

public FutureUtils()

Method Detail

flattenFutures

public static <T> java.util.concurrent.CompletionStage<java.util.Collection<T>> flattenFutures(java.util.Collection<java.util.concurrent.CompletionStage<T>> inputFutures)

Flattens the input future collection and returns a single future comprising the results of all the futures.

Type Parameters:

T - result type of the input future

Parameters:

inputFutures - input future collection

Returns:

a single CompletionStage that contains the results of all the input futures.

combineFutures

public static <T> java.util.concurrent.CompletionStage<java.util.Collection<T>> combineFutures(java.util.concurrent.CompletionStage<java.util.Collection<T>> future1,
                                                                                               java.util.concurrent.CompletionStage<java.util.Collection<T>> future2)