Module io.helidon.common.reactive

Package io.helidon.common.reactive

Class MultiDistinctProcessor<T>

java.lang.Object

io.helidon.common.reactive.BufferedProcessor<T,T>

io.helidon.common.reactive.MultiDistinctProcessor<T>

Type Parameters:

T - item type

All Implemented Interfaces:

Multi<T>, Subscribable<T>, Flow.Processor<T,T>, Flow.Publisher<T>, Flow.Subscriber<T>, Flow.Subscription

public class MultiDistinctProcessor<T>
extends BufferedProcessor<T,T>
implements Multi<T>

Filter out all duplicate items.

Method Summary

Modifier and Type	Method	Description
void	cancel()
static <T> MultiDistinctProcessor<T>	create()	Create new MultiDistinctProcessor.
protected void	doSubscribe(Flow.Publisher<U> delegate)	Subscribe the subscriber after the given delegate publisher.
protected void	fail(Throwable ex)	OnError downstream.
protected void	failAndCancel(Throwable ex)	OnError downstream and cancel upstream.
protected RequestedCounter	getRequestedCounter()	Returns RequestedCounter with information about requested vs.
protected SingleSubscriberHolder<U>	getSubscriber()	Processor's SingleSubscriberHolder.
protected Optional<Flow.Subscription>	getSubscription()	Processor's Flow.Subscription registered by Flow.Subscriber.onSubscribe(Flow.Subscription).
protected void	hookOnCancel(Flow.Subscription subscription)	Hook for SingleSubscriberHolder.cancel().
protected void	hookOnComplete()	Hook for Flow.Subscriber.onComplete().
protected void	hookOnError(Throwable error)	Hook for Flow.Subscriber.onError(java.lang.Throwable).
protected void	hookOnNext(T item)	Hook for Flow.Subscriber.onNext(java.lang.Object).
void	onError(Throwable ex)
void	onNext(T item)
void	onSubscribe(Flow.Subscription s)
void	request(long n)
protected void	submit(U item)	Submit an item to the subscriber.
void	subscribe(Flow.Subscriber<? super U> s)
protected void	tryComplete()	Try close processor's subscriber.

Methods inherited from class io.helidon.common.reactive.BufferedProcessor

notEnoughRequest, onComplete, tryRequest

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.Flow.Publisher

subscribe

Methods inherited from interface io.helidon.common.reactive.Multi

collect, collectList, distinct, dropWhile, filter, first, flatMap, flatMapIterable, forEach, limit, map, peek, skip, takeWhile

Methods inherited from interface io.helidon.common.reactive.Subscribable

onComplete, onError, onErrorResume, onErrorResumeWith, onTerminate, subscribe, subscribe, subscribe, subscribe

Method Detail

create

public static <T> MultiDistinctProcessor<T> create()

Create new MultiDistinctProcessor.

Type Parameters:

T - item type

Returns:

MultiDistinctProcessor

hookOnCancel

protected void hookOnCancel(Flow.Subscription subscription)

Hook for SingleSubscriberHolder.cancel().

Parameters:

subscription - of the processor for optional passing cancel event

hookOnNext

protected void hookOnNext(T item)

Hook for Flow.Subscriber.onNext(java.lang.Object).

Parameters:

item - next item

request

public void request(long n)

Specified by:

request in interface Flow.Subscription

cancel

public void cancel()

Specified by:

cancel in interface Flow.Subscription

onSubscribe

public void onSubscribe(Flow.Subscription s)

Specified by:

onSubscribe in interface Flow.Subscriber<T>

onNext

public void onNext(T item)

Specified by:

onNext in interface Flow.Subscriber<T>

fail

protected void fail(Throwable ex)

OnError downstream.

Parameters:

ex - Exception to be reported downstream

failAndCancel

protected void failAndCancel(Throwable ex)

OnError downstream and cancel upstream.

Parameters:

ex - Exception to be reported downstream

onError

public void onError(Throwable ex)

Specified by:

onError in interface Flow.Subscriber<T>

subscribe

public void subscribe(Flow.Subscriber<? super U> s)

Specified by:

subscribe in interface Flow.Publisher<T>

getSubscription

protected Optional<Flow.Subscription> getSubscription()

Processor's Flow.Subscription registered by Flow.Subscriber.onSubscribe(Flow.Subscription).

Returns:

Flow.Subscription

getSubscriber

protected SingleSubscriberHolder<U> getSubscriber()

Processor's SingleSubscriberHolder.

Returns:

SingleSubscriberHolder

getRequestedCounter

protected RequestedCounter getRequestedCounter()

Returns RequestedCounter with information about requested vs. submitted items.

Returns:

RequestedCounter

submit

protected void submit(U item)

Submit an item to the subscriber.

Parameters:

item - item to be submitted

hookOnError

protected void hookOnError(Throwable error)

Hook for Flow.Subscriber.onError(java.lang.Throwable).

Parameters:

error - error received

hookOnComplete

protected void hookOnComplete()

Hook for Flow.Subscriber.onComplete().

doSubscribe

protected final void doSubscribe(Flow.Publisher<U> delegate)

Subscribe the subscriber after the given delegate publisher.

Parameters:

delegate - delegate publisher

tryComplete

protected void tryComplete()

Try close processor's subscriber.