Class ProducerObserverArbiter<T>
- java.lang.Object
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- rx.internal.producers.ProducerObserverArbiter<T>
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- Type Parameters:
T
- the value type
public final class ProducerObserverArbiter<T> extends java.lang.Object implements Producer, Observer<T>
Producer that serializes any event emission with requesting and producer changes.The implementation shortcuts on error and overwrites producers that got delayed, similar to ProducerArbiter.
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Field Summary
Fields Modifier and Type Field Description (package private) Subscriber<? super T>
child
(package private) Producer
currentProducer
(package private) boolean
emitting
(package private) boolean
hasError
(package private) Producer
missedProducer
(package private) long
missedRequested
(package private) java.lang.Object
missedTerminal
(package private) static Producer
NULL_PRODUCER
(package private) java.util.List<T>
queue
(package private) long
requested
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Constructor Summary
Constructors Constructor Description ProducerObserverArbiter(Subscriber<? super T> child)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) void
emitLoop()
void
onCompleted()
Notifies the Observer that theObservable
has finished sending push-based notifications.void
onError(java.lang.Throwable e)
Notifies the Observer that theObservable
has experienced an error condition.void
onNext(T t)
Provides the Observer with a new item to observe.void
request(long n)
Request a certain maximum number of items from this Producer.void
setProducer(Producer p)
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Field Detail
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child
final Subscriber<? super T> child
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emitting
boolean emitting
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queue
java.util.List<T> queue
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currentProducer
Producer currentProducer
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requested
long requested
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missedRequested
long missedRequested
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missedProducer
Producer missedProducer
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missedTerminal
java.lang.Object missedTerminal
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hasError
volatile boolean hasError
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NULL_PRODUCER
static final Producer NULL_PRODUCER
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Constructor Detail
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ProducerObserverArbiter
public ProducerObserverArbiter(Subscriber<? super T> child)
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Method Detail
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onNext
public void onNext(T t)
Description copied from interface:Observer
Provides the Observer 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.onCompleted()
orObserver.onError(java.lang.Throwable)
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onError
public void onError(java.lang.Throwable e)
Description copied from interface:Observer
Notifies the Observer that theObservable
has experienced an error condition.If the
Observable
calls this method, it will not thereafter callObserver.onNext(T)
orObserver.onCompleted()
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onCompleted
public void onCompleted()
Description copied from interface:Observer
Notifies the Observer that theObservable
has finished sending push-based notifications.The
Observable
will not call this method if it callsObserver.onError(java.lang.Throwable)
.- Specified by:
onCompleted
in interfaceObserver<T>
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request
public void request(long n)
Description copied from interface:Producer
Request a certain maximum number of items from this Producer. This is a way of requesting backpressure. To disable backpressure, passLong.MAX_VALUE
to this method.Requests are additive but if a sequence of requests totals more than
Long.MAX_VALUE
thenLong.MAX_VALUE
requests will be actioned and the extras may be ignored. Arriving atLong.MAX_VALUE
by addition of requests cannot be assumed to disable backpressure. For example, the code below may result inLong.MAX_VALUE
requests being actioned only.request(100); request(Long.MAX_VALUE-1);
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setProducer
public void setProducer(Producer p)
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emitLoop
void emitLoop()
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