graphql.execution.reactive

Class CompletionStageMappingPublisher<D,U>

java.lang.Object

graphql.execution.reactive.CompletionStageMappingPublisher<D,U>

Type Parameters:

D - the down stream type

U - the up stream type to be mapped to

All Implemented Interfaces:

org.reactivestreams.Publisher<D>

public class CompletionStageMappingPublisher<D,U>
extends java.lang.Object
implements org.reactivestreams.Publisher<D>

A reactive Publisher that bridges over another Publisher of `D` and maps the results to type `U` via a CompletionStage, handling errors in that stage

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	CompletionStageMappingPublisher.CompletionStageSubscriber

Constructor Summary

Constructors

Constructor and Description
CompletionStageMappingPublisher(org.reactivestreams.Publisher<U> upstreamPublisher, java.util.function.Function<U,java.util.concurrent.CompletionStage<D>> mapper) You need the following :

Method Summary

Modifier and Type	Method and Description
org.reactivestreams.Publisher<U>	getUpstreamPublisher() Get instance of an upstreamPublisher
void	subscribe(org.reactivestreams.Subscriber<? super D> downstreamSubscriber)

Methods inherited from class java.lang.Object

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

Constructor Detail

CompletionStageMappingPublisher

public CompletionStageMappingPublisher(org.reactivestreams.Publisher<U> upstreamPublisher,
                                       java.util.function.Function<U,java.util.concurrent.CompletionStage<D>> mapper)

You need the following :

Parameters:

upstreamPublisher - an upstream source of data

mapper - a mapper function that turns upstream data into a promise of mapped D downstream data

Method Detail

subscribe

public void subscribe(org.reactivestreams.Subscriber<? super D> downstreamSubscriber)

Specified by:

subscribe in interface org.reactivestreams.Publisher<D>

getUpstreamPublisher

public org.reactivestreams.Publisher<U> getUpstreamPublisher()

Get instance of an upstreamPublisher

Returns:

upstream instance of Publisher