trait
Observer[-T] extends AnyRef
Abstract Value Members
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abstract
def
onComplete(): Unit
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abstract
def
onError(ex: Throwable): Unit
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abstract
def
onNext(elem: T): Future[Ack]
Concrete Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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-
-
def
finalize(): Unit
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
The Observer from the Rx pattern is the trio of callbacks that get subscribed to an Observable for receiving events.
The events received must follow the Rx grammar, which is: onNext * (onComplete | onError)?
That means an Observer can receive zero or multiple events, the stream ending either in one or zero
onCompleteoronError(just one, not both), and after onComplete or onError, a well behaved Observable implementation shouldn't send any more onNext events.