Class BufferUntilSubscriber<T>
- Type Parameters:
T
- the type of the items to be buffered
- All Implemented Interfaces:
Observer<T>
groupBy
and pivot
.
This currently has temporary unbounded buffers. It needs to become bounded and then do one of two things:
- blow up and make the user do something about it
- work with the backpressure solution ... still to be implemented (such as co-routines)
Generally the buffer should be very short lived (milliseconds) and then stops being involved. It can become a
memory leak though if a GroupedObservable
backed by this class is emitted but never subscribed to
(such as filtered out). In that case, either a time-bomb to throw away the buffer, or just blowing up and
making the user do something about it is needed.
For example, to filter out GroupedObservable
s, perhaps they need a silent subscribe()
on them
to just blackhole the data.
This is an initial start at solving this problem and solves the immediate problem of groupBy
and
pivot
and trades off the possibility of memory leak for deterministic functionality.
- See Also:
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Nested Class Summary
Nested ClassesModifier and TypeClassDescription(package private) static final class
(package private) static final class
The common state.Nested classes/interfaces inherited from class rx.Observable
Observable.OnSubscribe<T>, Observable.Operator<R,
T>, Observable.Transformer<T, R> -
Field Summary
FieldsModifier and TypeFieldDescription(package private) static final Observer
private boolean
(package private) final BufferUntilSubscriber.State
<T> -
Constructor Summary
ConstructorsModifierConstructorDescriptionprivate
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Method Summary
Modifier and TypeMethodDescriptionstatic <T> BufferUntilSubscriber
<T> create()
Creates a default, unbounded buffering Subject instance.private void
boolean
void
Notifies the Observer that theObservable
has finished sending push-based notifications.void
Notifies the Observer that theObservable
has experienced an error condition.void
Provides the Observer with a new item to observe.Methods inherited from class rx.subjects.Subject
toSerialized
Methods inherited from class rx.Observable
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Field Details
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state
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forward
private boolean forward -
EMPTY_OBSERVER
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Constructor Details
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BufferUntilSubscriber
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Method Details
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create
Creates a default, unbounded buffering Subject instance.- Type Parameters:
T
- the value type- Returns:
- the instance
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emit
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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)
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onError
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()
.- Parameters:
e
- the exception encountered by the Observable
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onNext
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)
.- Parameters:
t
- the item emitted by the Observable
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hasObservers
public boolean hasObservers()Description copied from class:Subject
- Specified by:
hasObservers
in classSubject<T,
T> - Returns:
- true if there is at least one Observer subscribed to this Subject, false otherwise
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