RxJava 2 2.2.21 · io.reactivex.internal.subscribers.BasicFuseableSubscriber

Modifier and Type	Field and Description
protected boolean	done Flag indicating no further onXXX event should be accepted.
protected final Subscriber<? super R>	downstream The downstream subscriber.
protected QueueSubscription<T>	qs The upstream's QueueSubscription if not null.
protected int	sourceMode Holds the established fusion mode of the upstream.
protected Subscription	upstream The upstream subscription.

Access	Constructor and Description
public	BasicFuseableSubscriber(Subscriber<? super R> the subscriber, not null (not verified) downstream) Construct a BasicFuseableSubscriber by wrapping the given subscriber.

Method Summary

Modifier and Type	Method and Description
protected void	afterDownstream() Override this to perform actions after the call to `actual.onSubscribe(this)` happened.
protected boolean	Returns: true if onSubscribe should continue with the call beforeDownstream() Override this to perform actions before the call `actual.onSubscribe(this)` happens.
public void	cancel() Implements org.reactivestreams.Subscription.cancel. Request the `Publisher` to stop sending data and clean up resources.
public void	clear() Implements io.reactivex.internal.fuseable.SimpleQueue.clear. Removes all enqueued items from this queue.
protected final void	fail(Throwable the throwable to rethrow or signal to the actual subscriber t) Rethrows the throwable if it is a fatal exception or calls `onError(Throwable)`.
public boolean	isEmpty() Implements io.reactivex.internal.fuseable.SimpleQueue.isEmpty. Returns true if the queue is empty.
public final boolean	offer(R the value to enqueue, not null e) Implements io.reactivex.internal.fuseable.SimpleQueue.offer. Atomically enqueue a single.
public final boolean	offer(R the first value to enqueue, not null v1, R the second value to enqueue, not null v2) Implements io.reactivex.internal.fuseable.SimpleQueue.offer. Atomically enqueue two values.
public void	onComplete() Implements org.reactivestreams.Subscriber.onComplete. Successful terminal state.
public void	onError(Throwable the throwable signaled t) Implements org.reactivestreams.Subscriber.onError. Failed terminal state.
public final void	onSubscribe(Subscription the `Subscription` that allows requesting data via `Subscription#request(long)` s) Implements io.reactivex.FlowableSubscriber.onSubscribe. Implementors of this method should make sure everything that needs to be visible in `onNext(Object)` is established before calling `Subscription#request(long)`.
public void	request(long the strictly positive number of elements to requests to the upstream `Publisher` n) Implements org.reactivestreams.Subscription.request. No events will be sent by a `Publisher` until demand is signaled via this method.
protected final int	Returns: the established fusion mode transitiveBoundaryFusion(int the fusion mode requested mode) Calls the upstream's QueueSubscription.requestFusion with the mode and saves the established mode in `sourceMode` if that mode doesn't have the `QueueSubscription#BOUNDARY` flag set.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

done	back to summary
protected boolean done Flag indicating no further onXXX event should be accepted.

downstream	back to summary
protected final Subscriber<? super R> downstream The downstream subscriber.

qs	back to summary
protected QueueSubscription<T> qs The upstream's QueueSubscription if not null.

sourceMode	back to summary
protected int sourceMode Holds the established fusion mode of the upstream.

upstream	back to summary
protected Subscription upstream The upstream subscription.

BasicFuseableSubscriber	back to summary
public BasicFuseableSubscriber(Subscriber<? super R> downstream) Construct a BasicFuseableSubscriber by wrapping the given subscriber. Parameters downstream:Subscriber<? super R> the subscriber, not null (not verified)

Method Detail

afterDownstream	back to summary
protected void afterDownstream() Override this to perform actions after the call to `actual.onSubscribe(this)` happened.

beforeDownstream back to summary

beforeDownstream	back to summary
protected boolean beforeDownstream() Override this to perform actions before the call `actual.onSubscribe(this)` happens. Returns:boolean true if onSubscribe should continue with the call

protected boolean beforeDownstream()

Override this to perform actions before the call actual.onSubscribe(this) happens.

Returns:boolean: true if onSubscribe should continue with the call

cancel back to summary

cancel	back to summary
public void cancel() Implements org.reactivestreams.Subscription.cancel. Doc from org.reactivestreams.Subscription.cancel. Request the `Publisher` to stop sending data and clean up resources. Data may still be sent to meet previously signalled demand after calling cancel. Annotations @Override

public void cancel()

Implements org.reactivestreams.Subscription.cancel.

Doc from org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.

Data may still be sent to meet previously signalled demand after calling cancel.

Annotations

@Override

clear	back to summary
public void clear() Implements io.reactivex.internal.fuseable.SimpleQueue.clear. Doc from io.reactivex.internal.fuseable.SimpleQueue.clear. Removes all enqueued items from this queue. Annotations @Override

clear

back to summary

public void clear()

Implements io.reactivex.internal.fuseable.SimpleQueue.clear.

Doc from io.reactivex.internal.fuseable.SimpleQueue.clear.

Removes all enqueued items from this queue.

Annotations

@Override

fail back to summary

fail	back to summary
protected final void fail(Throwable t) Rethrows the throwable if it is a fatal exception or calls `onError(Throwable)`. Parameters t:Throwable the throwable to rethrow or signal to the actual subscriber

protected final void fail(Throwable t)

Rethrows the throwable if it is a fatal exception or calls onError(Throwable).

Parameters

t:Throwable: the throwable to rethrow or signal to the actual subscriber

isEmpty back to summary

isEmpty	back to summary
public boolean isEmpty() Implements io.reactivex.internal.fuseable.SimpleQueue.isEmpty. Doc from io.reactivex.internal.fuseable.SimpleQueue.isEmpty. Returns true if the queue is empty. Note however that due to potential fused functions in `poll()` it is possible this method returns false but then poll() returns null because the fused function swallowed the available item(s). Returns:boolean true if the queue is empty Annotations @Override

public boolean isEmpty()

Implements io.reactivex.internal.fuseable.SimpleQueue.isEmpty.

Doc from io.reactivex.internal.fuseable.SimpleQueue.isEmpty.

Returns true if the queue is empty.

Note however that due to potential fused functions in poll() it is possible this method returns false but then poll() returns null because the fused function swallowed the available item(s).

Returns:boolean

true if the queue is empty

Annotations

@Override

offer	back to summary
public final boolean offer(R e) Implements io.reactivex.internal.fuseable.SimpleQueue.offer. Doc from io.reactivex.internal.fuseable.SimpleQueue.offer. Atomically enqueue a single. Parameters e:R the value to enqueue, not null Returns:boolean true if successful, false if the value was not enqueued likely due to reaching the queue capacity) Annotations @Override

offer

back to summary

public final boolean offer(R e)

Implements io.reactivex.internal.fuseable.SimpleQueue.offer.

Doc from io.reactivex.internal.fuseable.SimpleQueue.offer.

Atomically enqueue a single.

Parameters

e:R: the value to enqueue, not null

Returns:boolean

true if successful, false if the value was not enqueued likely due to reaching the queue capacity)

Annotations

@Override

offer	back to summary
public final boolean offer(R v1, R v2) Implements io.reactivex.internal.fuseable.SimpleQueue.offer. Doc from io.reactivex.internal.fuseable.SimpleQueue.offer. Atomically enqueue two values. Parameters v1:R the first value to enqueue, not null v2:R the second value to enqueue, not null Returns:boolean true if successful, false if the value was not enqueued likely due to reaching the queue capacity) Annotations @Override

offer

back to summary

public final boolean offer(R v1, R v2)

Implements io.reactivex.internal.fuseable.SimpleQueue.offer.

Doc from io.reactivex.internal.fuseable.SimpleQueue.offer.

Atomically enqueue two values.

Parameters

v1:R: the first value to enqueue, not null
v2:R: the second value to enqueue, not null

Returns:boolean

true if successful, false if the value was not enqueued likely due to reaching the queue capacity)

Annotations

@Override

onComplete back to summary

onComplete	back to summary
public void onComplete() Implements org.reactivestreams.Subscriber.onComplete. Doc from org.reactivestreams.Subscriber.onComplete. Successful terminal state. No further events will be sent even if `Subscription#request(long)` is invoked again. Annotations @Override

public void onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Doc from org.reactivestreams.Subscriber.onComplete.

Successful terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Annotations

@Override

onError back to summary

onError	back to summary
public void onError(Throwable t) Implements org.reactivestreams.Subscriber.onError. Doc from org.reactivestreams.Subscriber.onError. Failed terminal state. No further events will be sent even if `Subscription#request(long)` is invoked again. Parameters t:Throwable the throwable signaled Annotations @Override

public void onError(Throwable t)

Implements org.reactivestreams.Subscriber.onError.

Doc from org.reactivestreams.Subscriber.onError.

Failed terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Parameters

t:Throwable: the throwable signaled

Annotations

@Override

onSubscribe back to summary

onSubscribe	back to summary
public final void onSubscribe(Subscription s) Implements io.reactivex.FlowableSubscriber.onSubscribe. Doc from io.reactivex.FlowableSubscriber.onSubscribe. Implementors of this method should make sure everything that needs to be visible in `onNext(Object)` is established before calling `Subscription#request(long)`. In practice this means no initialization should happen after the `request()` call and additional behavior is thread safe in respect to `onNext`. Invoked after calling `Publisher#subscribe(Subscriber)`. No data will start flowing until `Subscription#request(long)` is invoked. It is the responsibility of this `Subscriber` instance to call `Subscription#request(long)` whenever more data is wanted. The `Publisher` will send notifications only in response to `Subscription#request(long)`. Parameters s:Subscription Doc from org.reactivestreams.Subscriber.onSubscribe. the `Subscription` that allows requesting data via `Subscription#request(long)` Annotations @SuppressWarnings:unchecked @Override

public final void onSubscribe(Subscription s)

Implements io.reactivex.FlowableSubscriber.onSubscribe.

Doc from io.reactivex.FlowableSubscriber.onSubscribe.

Implementors of this method should make sure everything that needs to be visible in onNext(Object) is established before calling Subscription#request(long). In practice this means no initialization should happen after the request() call and additional behavior is thread safe in respect to onNext. Invoked after calling Publisher#subscribe(Subscriber).

No data will start flowing until Subscription#request(long) is invoked.

It is the responsibility of this Subscriber instance to call Subscription#request(long) whenever more data is wanted.

The Publisher will send notifications only in response to Subscription#request(long).

Parameters

s:Subscription

Doc from org.reactivestreams.Subscriber.onSubscribe.

the Subscription that allows requesting data via Subscription#request(long)

Annotations

@SuppressWarnings:unchecked
@Override

request back to summary

request	back to summary
public void request(long n) Implements org.reactivestreams.Subscription.request. Doc from org.reactivestreams.Subscription.request. No events will be sent by a `Publisher` until demand is signaled via this method. It can be called however often and whenever needed—but if the outstanding cumulative demand ever becomes Long.MAX_VALUE or more, it may be treated by the `Publisher` as "effectively unbounded". Whatever has been requested can be sent by the `Publisher` so only signal demand for what can be safely handled. A `Publisher` can send less than is requested if the stream ends but then must emit either `Subscriber#onError(Throwable)` or `Subscriber#onComplete()`. Parameters n:long the strictly positive number of elements to requests to the upstream `Publisher` Annotations @Override

public void request(long n)

Implements org.reactivestreams.Subscription.request.

Doc from org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.

It can be called however often and whenever needed—but if the outstanding cumulative demand ever becomes Long.MAX_VALUE or more, it may be treated by the Publisher as "effectively unbounded".

Whatever has been requested can be sent by the Publisher so only signal demand for what can be safely handled.

A Publisher can send less than is requested if the stream ends but then must emit either Subscriber#onError(Throwable) or Subscriber#onComplete().

Parameters

n:long: the strictly positive number of elements to requests to the upstream Publisher

Annotations

@Override

transitiveBoundaryFusion back to summary

transitiveBoundaryFusion	back to summary
protected final int transitiveBoundaryFusion(int mode) Calls the upstream's QueueSubscription.requestFusion with the mode and saves the established mode in `sourceMode` if that mode doesn't have the `QueueSubscription#BOUNDARY` flag set. If the upstream doesn't support fusion (`qs` is null), the method returns `QueueSubscription#NONE`. Parameters mode:int the fusion mode requested Returns:int the established fusion mode

protected final int transitiveBoundaryFusion(int mode)

Calls the upstream's QueueSubscription.requestFusion with the mode and saves the established mode in sourceMode if that mode doesn't have the QueueSubscription#BOUNDARY flag set.

If the upstream doesn't support fusion (qs is null), the method returns QueueSubscription#NONE.

Parameters

mode:int: the fusion mode requested

Returns:int

the established fusion mode

public abstract Class BasicFuseableSubscriber<T, R>

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