Class FutureSubscriber<T>

java.lang.Object

java.util.concurrent.CountDownLatch

io.reactivex.rxjava3.internal.subscribers.FutureSubscriber<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

FlowableSubscriber<T>, Future<T>, org.reactivestreams.Subscriber<T>, org.reactivestreams.Subscription

public final class FutureSubscriber<T>
extends CountDownLatch
implements FlowableSubscriber<T>, Future<T>, org.reactivestreams.Subscription

A Subscriber + Future that expects exactly one upstream value and provides it via the (blocking) Future API.

Nested Class Summary

Nested classes/interfaces inherited from interface Future

Future.State

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Throwable	error
(package private) final AtomicReference<org.reactivestreams.Subscription>	upstream
(package private) T	value

Constructor Summary

Constructors

Constructor	Description
FutureSubscriber()

Method Summary

Modifier and Type	Method	Description
void	cancel()
boolean	cancel(boolean mayInterruptIfRunning)
T	get()
T	get(long timeout, @NonNull TimeUnit unit)
boolean	isCancelled()
boolean	isDone()
void	onComplete()
void	onError(Throwable t)
void	onNext(T t)
void	onSubscribe(org.reactivestreams.Subscription s)	Implementors of this method should make sure everything that needs to be visible in Subscriber.onNext(Object) is established before calling Subscription.request(long).
void	request(long n)

Methods inherited from class CountDownLatch

await, await, countDown, getCount, toString

Methods inherited from class Object

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

Methods inherited from interface Future

exceptionNow, resultNow, state

Field Details

value

T value

error

Throwable error

upstream

final AtomicReference<org.reactivestreams.Subscription> upstream

Constructor Details

FutureSubscriber

public FutureSubscriber()

Method Details

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface Future<T>

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface Future<T>

isDone

public boolean isDone()

Specified by:

isDone in interface Future<T>

get

public T get()
      throws InterruptedException,
ExecutionException

Specified by:

get in interface Future<T>

Throws:

InterruptedException

ExecutionException

get

public T get(long timeout,
 @NonNull
 @NonNull TimeUnit unit)
      throws InterruptedException,
ExecutionException,
TimeoutException

Specified by:

get in interface Future<T>

Throws:

InterruptedException

ExecutionException

TimeoutException

onSubscribe

public void onSubscribe(org.reactivestreams.Subscription s)

Description copied from interface: FlowableSubscriber

Implementors of this method should make sure everything that needs to be visible in Subscriber.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.

Specified by:

onSubscribe in interface FlowableSubscriber<T>

Specified by:

onSubscribe in interface org.reactivestreams.Subscriber<T>

onNext

public void onNext(T t)

Specified by:

onNext in interface org.reactivestreams.Subscriber<T>

onError

public void onError(Throwable t)

Specified by:

onError in interface org.reactivestreams.Subscriber<T>

onComplete

public void onComplete()

Specified by:

onComplete in interface org.reactivestreams.Subscriber<T>

cancel

public void cancel()

Specified by:

cancel in interface org.reactivestreams.Subscription

request

public void request(long n)

Specified by:

request in interface org.reactivestreams.Subscription