com.espertech.esper.pattern.observer

Interface ObserverEventEvaluator

All Known Implementing Classes:

EvalObserverStateNode

public interface ObserverEventEvaluator

For use by EventObserver instances to place an event for processing/evaluation.

Method Summary

Modifier and Type	Method and Description
PatternAgentInstanceContext	getContext()
void	observerEvaluateFalse(boolean restartable) Indicate that the observer turned permanently false.
void	observerEvaluateTrue(MatchedEventMap matchEvent, boolean quitted) Indicate an event for evaluation (sub-expression the observer represents has turned true).

Method Detail

observerEvaluateTrue

void observerEvaluateTrue(MatchedEventMap matchEvent,
                          boolean quitted)

Indicate an event for evaluation (sub-expression the observer represents has turned true).

Parameters:

matchEvent - is the matched events so far

quitted - whether the observer quit, usually "true" for most observers

observerEvaluateFalse

void observerEvaluateFalse(boolean restartable)

Indicate that the observer turned permanently false.

Parameters:

restartable - true for whether it can restart

getContext

PatternAgentInstanceContext getContext()