graphql.execution.reactive

Class SubscriptionPublisher

java.lang.Object

graphql.execution.reactive.SubscriptionPublisher

All Implemented Interfaces:

org.reactivestreams.Publisher<ExecutionResult>

@PublicApi
public class SubscriptionPublisher
extends java.lang.Object
implements org.reactivestreams.Publisher<ExecutionResult>

Subscription queries return an instance of this class in the ExecutionResult data element for the subscribed field.

      ExecutionResult er = graphQL.execute("subscription s { onEntityChanged(id : "1") { selection1, selection2 }}")
      SubscriptionPublisher eventPublisher = er.getData("onEntityChanged")
 
 

Constructor Summary

Constructors

Constructor and Description
SubscriptionPublisher(org.reactivestreams.Publisher<java.lang.Object> upstreamPublisher, java.util.function.Function<java.lang.Object,java.util.concurrent.CompletionStage<ExecutionResult>> mapper) Subscription consuming code is not expected to create instances of this class

Method Summary

Modifier and Type	Method and Description
org.reactivestreams.Publisher<java.lang.Object>	getUpstreamPublisher()
void	subscribe(org.reactivestreams.Subscriber<? super ExecutionResult> subscriber)

Methods inherited from class java.lang.Object

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

Constructor Detail

SubscriptionPublisher

public SubscriptionPublisher(org.reactivestreams.Publisher<java.lang.Object> upstreamPublisher,
                             java.util.function.Function<java.lang.Object,java.util.concurrent.CompletionStage<ExecutionResult>> mapper)

Subscription consuming code is not expected to create instances of this class

Parameters:

upstreamPublisher - the original publisher of objects that then have a graphql selection set applied to them

mapper - a mapper that turns object into promises to execution results which are then published on this stream

Method Detail

getUpstreamPublisher

public org.reactivestreams.Publisher<java.lang.Object> getUpstreamPublisher()

Returns:

the underlying Publisher that was providing raw objects to the subscription field, whose published values are then mapped to execution results

subscribe

public void subscribe(org.reactivestreams.Subscriber<? super ExecutionResult> subscriber)

Specified by:

subscribe in interface org.reactivestreams.Publisher<ExecutionResult>