Class MaybeFlattenStreamAsFlowable.FlattenStreamMultiObserver<T,R>
- java.lang.Object
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- java.lang.Number
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- java.util.concurrent.atomic.AtomicInteger
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- io.reactivex.rxjava3.internal.subscriptions.BasicIntQueueSubscription<R>
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- io.reactivex.rxjava3.internal.jdk8.MaybeFlattenStreamAsFlowable.FlattenStreamMultiObserver<T,R>
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- All Implemented Interfaces:
MaybeObserver<T>
,SingleObserver<T>
,QueueFuseable<R>
,QueueSubscription<R>
,SimpleQueue<R>
,java.io.Serializable
,org.reactivestreams.Subscription
- Enclosing class:
- MaybeFlattenStreamAsFlowable<T,R>
static final class MaybeFlattenStreamAsFlowable.FlattenStreamMultiObserver<T,R> extends BasicIntQueueSubscription<R> implements MaybeObserver<T>, SingleObserver<T>
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Field Summary
Fields Modifier and Type Field Description (package private) boolean
cancelled
(package private) java.lang.AutoCloseable
close
(package private) org.reactivestreams.Subscriber<? super R>
downstream
(package private) long
emitted
(package private) java.util.Iterator<? extends R>
iterator
(package private) Function<? super T,? extends java.util.stream.Stream<? extends R>>
mapper
(package private) boolean
once
(package private) boolean
outputFused
(package private) java.util.concurrent.atomic.AtomicLong
requested
private static long
serialVersionUID
(package private) Disposable
upstream
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Constructor Summary
Constructors Constructor Description FlattenStreamMultiObserver(org.reactivestreams.Subscriber<? super R> downstream, Function<? super T,? extends java.util.stream.Stream<? extends R>> mapper)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
cancel()
void
clear()
Removes all enqueued items from this queue.(package private) void
close(java.lang.AutoCloseable c)
(package private) void
drain()
boolean
isEmpty()
Returns true if the queue is empty.void
onComplete()
Called once the deferred computation completes normally.void
onError(@NonNull java.lang.Throwable e)
Notifies theMaybeObserver
that theMaybe
has experienced an error condition.void
onSubscribe(@NonNull Disposable d)
Provides theMaybeObserver
with the means of cancelling (disposing) the connection (channel) with theMaybe
in both synchronous (from withinonSubscribe(Disposable)
itself) and asynchronous manner.void
onSuccess(T t)
Notifies theMaybeObserver
with one item and that theMaybe
has finished sending push-based notifications.R
poll()
Tries to dequeue a value (non-null) or returns null if the queue is empty.void
request(long n)
int
requestFusion(int mode)
Request a fusion mode from the upstream.-
Methods inherited from class io.reactivex.rxjava3.internal.subscriptions.BasicIntQueueSubscription
offer, offer
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Methods inherited from class java.util.concurrent.atomic.AtomicInteger
accumulateAndGet, addAndGet, compareAndExchange, compareAndExchangeAcquire, compareAndExchangeRelease, compareAndSet, decrementAndGet, doubleValue, floatValue, get, getAcquire, getAndAccumulate, getAndAdd, getAndDecrement, getAndIncrement, getAndSet, getAndUpdate, getOpaque, getPlain, incrementAndGet, intValue, lazySet, longValue, set, setOpaque, setPlain, setRelease, toString, updateAndGet, weakCompareAndSet, weakCompareAndSetAcquire, weakCompareAndSetPlain, weakCompareAndSetRelease, weakCompareAndSetVolatile
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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downstream
final org.reactivestreams.Subscriber<? super R> downstream
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requested
final java.util.concurrent.atomic.AtomicLong requested
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upstream
Disposable upstream
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iterator
volatile java.util.Iterator<? extends R> iterator
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close
java.lang.AutoCloseable close
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once
boolean once
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cancelled
volatile boolean cancelled
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outputFused
boolean outputFused
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emitted
long emitted
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Method Detail
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onSubscribe
public void onSubscribe(@NonNull @NonNull Disposable d)
Description copied from interface:MaybeObserver
Provides theMaybeObserver
with the means of cancelling (disposing) the connection (channel) with theMaybe
in both synchronous (from withinonSubscribe(Disposable)
itself) and asynchronous manner.- Specified by:
onSubscribe
in interfaceMaybeObserver<T>
- Specified by:
onSubscribe
in interfaceSingleObserver<T>
- Parameters:
d
- theDisposable
instance whoseDisposable.dispose()
can be called anytime to cancel the connection
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onSuccess
public void onSuccess(@NonNull T t)
Description copied from interface:MaybeObserver
Notifies theMaybeObserver
with one item and that theMaybe
has finished sending push-based notifications.The
Maybe
will not call this method if it callsMaybeObserver.onError(java.lang.Throwable)
.- Specified by:
onSuccess
in interfaceMaybeObserver<T>
- Specified by:
onSuccess
in interfaceSingleObserver<T>
- Parameters:
t
- the item emitted by theMaybe
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onError
public void onError(@NonNull @NonNull java.lang.Throwable e)
Description copied from interface:MaybeObserver
Notifies theMaybeObserver
that theMaybe
has experienced an error condition.If the
Maybe
calls this method, it will not thereafter callMaybeObserver.onSuccess(T)
.- Specified by:
onError
in interfaceMaybeObserver<T>
- Specified by:
onError
in interfaceSingleObserver<T>
- Parameters:
e
- the exception encountered by theMaybe
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onComplete
public void onComplete()
Description copied from interface:MaybeObserver
Called once the deferred computation completes normally.- Specified by:
onComplete
in interfaceMaybeObserver<T>
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request
public void request(long n)
- Specified by:
request
in interfaceorg.reactivestreams.Subscription
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cancel
public void cancel()
- Specified by:
cancel
in interfaceorg.reactivestreams.Subscription
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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.- Specified by:
requestFusion
in interfaceQueueFuseable<T>
- Parameters:
mode
- the requested fusion mode, allowed values areQueueFuseable.SYNC
,QueueFuseable.ASYNC
,QueueFuseable.ANY
combined withQueueFuseable.BOUNDARY
(e.g.,requestFusion(SYNC | BOUNDARY)
).- Returns:
- the established fusion mode:
QueueFuseable.NONE
,QueueFuseable.SYNC
,QueueFuseable.ASYNC
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poll
@Nullable public R poll() throws java.lang.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.- Specified by:
poll
in interfaceSimpleQueue<T>
- Returns:
- the item or null to indicate an empty queue
- Throws:
java.lang.Throwable
- if some pre-processing of the dequeued item (usually through fused functions) throws.
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isEmpty
public boolean isEmpty()
Description copied from interface:SimpleQueue
Returns true if the queue is empty.Note however that due to potential fused functions in
SimpleQueue.poll()
it is possible this method returns false but then poll() returns null because the fused function swallowed the available item(s).- Specified by:
isEmpty
in interfaceSimpleQueue<T>
- Returns:
- true if the queue is empty
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clear
public void clear()
Description copied from interface:SimpleQueue
Removes all enqueued items from this queue.- Specified by:
clear
in interfaceSimpleQueue<T>
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close
void close(java.lang.AutoCloseable c)
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drain
void drain()
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