Class ObservableDistinct.DistinctObserver<T,K>
- java.lang.Object
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- io.reactivex.rxjava3.internal.observers.BasicFuseableObserver<T,T>
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- io.reactivex.rxjava3.internal.operators.observable.ObservableDistinct.DistinctObserver<T,K>
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- All Implemented Interfaces:
Observer<T>
,Disposable
,QueueDisposable<T>
,QueueFuseable<T>
,SimpleQueue<T>
- Enclosing class:
- ObservableDistinct<T,K>
static final class ObservableDistinct.DistinctObserver<T,K> extends BasicFuseableObserver<T,T>
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Field Summary
Fields Modifier and Type Field Description (package private) java.util.Collection<? super K>
collection
(package private) Function<? super T,K>
keySelector
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Fields inherited from class io.reactivex.rxjava3.internal.observers.BasicFuseableObserver
done, downstream, qd, sourceMode, upstream
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Removes all enqueued items from this queue.void
onComplete()
Notifies theObserver
that theObservable
has finished sending push-based notifications.void
onError(java.lang.Throwable e)
Notifies theObserver
that theObservable
has experienced an error condition.void
onNext(T value)
Provides theObserver
with a new item to observe.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 io.reactivex.rxjava3.internal.observers.BasicFuseableObserver
afterDownstream, beforeDownstream, dispose, fail, isDisposed, isEmpty, offer, offer, onSubscribe, transitiveBoundaryFusion
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Method Detail
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onNext
public void onNext(T value)
Description copied from interface:Observer
Provides theObserver
with a new item to observe.The
Observable
may call this method 0 or more times.The
Observable
will not call this method again after it calls eitherObserver.onComplete()
orObserver.onError(java.lang.Throwable)
.- Parameters:
value
- the item emitted by the Observable
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onError
public void onError(java.lang.Throwable e)
Description copied from interface:Observer
Notifies theObserver
that theObservable
has experienced an error condition.If the
Observable
calls this method, it will not thereafter callObserver.onNext(T)
orObserver.onComplete()
.
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onComplete
public void onComplete()
Description copied from interface:Observer
Notifies theObserver
that theObservable
has finished sending push-based notifications.The
Observable
will not call this method if it callsObserver.onError(java.lang.Throwable)
.- Specified by:
onComplete
in interfaceObserver<T>
- Overrides:
onComplete
in classBasicFuseableObserver<T,T>
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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.- 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 T 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.- 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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clear
public void clear()
Description copied from interface:SimpleQueue
Removes all enqueued items from this queue.- Specified by:
clear
in interfaceSimpleQueue<T>
- Overrides:
clear
in classBasicFuseableObserver<T,T>
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