Class FlowableDistinct.DistinctSubscriber<T,K>

java.lang.Object

io.reactivex.rxjava3.internal.subscribers.BasicFuseableSubscriber<T,T>

io.reactivex.rxjava3.internal.operators.flowable.FlowableDistinct.DistinctSubscriber<T,K>

All Implemented Interfaces:

FlowableSubscriber<T>, QueueFuseable<T>, QueueSubscription<T>, SimpleQueue<T>, org.reactivestreams.Subscriber<T>, org.reactivestreams.Subscription

Enclosing class:

FlowableDistinct<T,K>

static final class FlowableDistinct.DistinctSubscriber<T,K>
extends BasicFuseableSubscriber<T,T>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final Collection<? super K>	collection
(package private) final Function<? super T, K>	keySelector

Fields inherited from class BasicFuseableSubscriber

done, downstream, qs, sourceMode, upstream

Fields inherited from interface QueueFuseable

ANY, ASYNC, BOUNDARY, NONE, SYNC

Constructor Summary

Constructors

Constructor	Description
DistinctSubscriber(org.reactivestreams.Subscriber<? super T> actual, Function<? super T, K> keySelector, Collection<? super K> collection)

Method Summary

Modifier and Type	Method	Description
void	clear()	Removes all enqueued items from this queue.
void	onComplete()
void	onError(Throwable e)
void	onNext(T value)
T	poll()	Tries to dequeue a value (non-null) or returns null if the queue is empty.
int	requestFusion(int mode)	Request a fusion mode from the upstream.

Methods inherited from class BasicFuseableSubscriber

afterDownstream, beforeDownstream, cancel, fail, isEmpty, offer, offer, onSubscribe, request, transitiveBoundaryFusion

Methods inherited from class Object

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

Field Details

collection

final Collection<? super K> collection

keySelector

final Function<? super T, K> keySelector

Constructor Details

DistinctSubscriber

DistinctSubscriber(org.reactivestreams.Subscriber<? super T> actual,
 Function<? super T, K> keySelector,
 Collection<? super K> collection)

Method Details

onNext

public void onNext(T value)

onError

public void onError(Throwable e)

Specified by:

onError in interface org.reactivestreams.Subscriber<T>

Overrides:

onError in class BasicFuseableSubscriber<T,T>

onComplete

public void onComplete()

Specified by:

onComplete in interface org.reactivestreams.Subscriber<T>

Overrides:

onComplete in class BasicFuseableSubscriber<T,T>

requestFusion

public int requestFusion(int mode)

Description copied from interface: QueueFuseable

Request a fusion mode from the upstream.

This should be called before onSubscribe returns.

Calling this method multiple times or after onSubscribe finished is not allowed and may result in undefined behavior.

Parameters:

mode - the requested fusion mode, allowed values are QueueFuseable.SYNC, QueueFuseable.ASYNC, QueueFuseable.ANY combined with QueueFuseable.BOUNDARY (e.g., requestFusion(SYNC | BOUNDARY)).

Returns:

the established fusion mode: QueueFuseable.NONE, QueueFuseable.SYNC, QueueFuseable.ASYNC.

poll

@Nullable
public T poll()
       throws Throwable

Description copied from interface: SimpleQueue

Tries to dequeue a value (non-null) or returns null if the queue is empty.

If the producer uses SimpleQueue.offer(Object, Object) and when polling in pairs, if the first poll() returns a non-null item, the second poll() is guaranteed to return a non-null item as well.

Returns:

the item or null to indicate an empty queue

Throws:

Throwable - if some pre-processing of the dequeued item (usually through fused functions) throws.

clear

public void clear()

Description copied from interface: SimpleQueue

Removes all enqueued items from this queue.

Specified by:

clear in interface SimpleQueue<T>

Overrides:

clear in class BasicFuseableSubscriber<T,T>