Class FutureMultiObserver<T>

java.lang.Object

java.util.concurrent.CountDownLatch

io.reactivex.rxjava3.internal.observers.FutureMultiObserver<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

CompletableObserver, MaybeObserver<T>, SingleObserver<T>, Disposable, Future<T>

public final class FutureMultiObserver<T>
extends CountDownLatch
implements MaybeObserver<T>, SingleObserver<T>, CompletableObserver, Future<T>, Disposable

An Observer + 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<Disposable>	upstream
(package private) T	value

Constructor Summary

Constructors

Constructor	Description
FutureMultiObserver()

Method Summary

Modifier and Type	Method	Description
boolean	cancel(boolean mayInterruptIfRunning)
void	dispose()	Dispose the resource, the operation should be idempotent.
T	get()
T	get(long timeout, @NonNull TimeUnit unit)
boolean	isCancelled()
boolean	isDisposed()	Returns true if this resource has been disposed.
boolean	isDone()
void	onComplete()	Called once the deferred computation completes normally.
void	onError(Throwable t)	Notifies the MaybeObserver that the Maybe has experienced an error condition.
void	onSubscribe(Disposable d)	Provides the MaybeObserver with the means of cancelling (disposing) the connection (channel) with the Maybe in both synchronous (from within onSubscribe(Disposable) itself) and asynchronous manner.
void	onSuccess(T t)	Notifies the MaybeObserver with one item and that the Maybe has finished sending push-based notifications.

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<Disposable> upstream

Constructor Details

FutureMultiObserver

public FutureMultiObserver()

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(Disposable d)

Description copied from interface: MaybeObserver

Provides the MaybeObserver with the means of cancelling (disposing) the connection (channel) with the Maybe in both synchronous (from within onSubscribe(Disposable) itself) and asynchronous manner.

Specified by:

onSubscribe in interface CompletableObserver

Specified by:

onSubscribe in interface MaybeObserver<T>

Specified by:

onSubscribe in interface SingleObserver<T>

Parameters:

d - the Disposable instance whose Disposable.dispose() can be called anytime to cancel the connection

onSuccess

public void onSuccess(T t)

Description copied from interface: MaybeObserver

Notifies the MaybeObserver with one item and that the Maybe has finished sending push-based notifications.

The Maybe will not call this method if it calls MaybeObserver.onError(Throwable).

Specified by:

onSuccess in interface MaybeObserver<T>

Specified by:

onSuccess in interface SingleObserver<T>

Parameters:

t - the item emitted by the Maybe

onError

public void onError(Throwable t)

Description copied from interface: MaybeObserver

Notifies the MaybeObserver that the Maybe has experienced an error condition.

If the Maybe calls this method, it will not thereafter call MaybeObserver.onSuccess(T).

Specified by:

onError in interface CompletableObserver

Specified by:

onError in interface MaybeObserver<T>

Specified by:

onError in interface SingleObserver<T>

Parameters:

t - the exception encountered by the Maybe

onComplete

public void onComplete()

Description copied from interface: MaybeObserver

Called once the deferred computation completes normally.

Specified by:

onComplete in interface CompletableObserver

Specified by:

onComplete in interface MaybeObserver<T>

dispose

public void dispose()

Description copied from interface: Disposable

Dispose the resource, the operation should be idempotent.

Specified by:

dispose in interface Disposable

isDisposed

public boolean isDisposed()

Description copied from interface: Disposable

Returns true if this resource has been disposed.

Specified by:

isDisposed in interface Disposable

Returns:

true if this resource has been disposed