[rules-users] Matching consecutive events

Dear contributors, this rule is expected to match a sequence of 2 consecutive events: rule "test" when // a) $ev1 : LocalizationEvent( type == TYPE.HINT, $target : target ) from entry-point "events/localization" $ev2 : LocalizationEvent( type == TYPE.HINT, target == $target, this after $ev1 ) from entry-point "events/localization" // b) // Ev1 directly followed by ev2: no other HINT in between not( LocalizationEvent( type == TYPE.HINT, target == $target, this after $ev1, this before $ev2 ) from entry-point "events/localization" ) then do() end The second event is interpreted as a "confirmation" of the first event (a). No other (deviating) event is allowed between them (b). With this restriction in place, the rule requires a sequence of 3 input events for activation, otherwise 2 events are sufficient (as expected). The events are ordered correctly and it is not obvious, why a third event is needed since the interval between ev1 and ev2 is closed ? This leads to an unnecessary delay in rule activation.. How could this be avoided and are there other approaches to match a concrete event sequence pattern ? Many thanks Jaro -- View this message in context: http://drools.46999.n3.nabble.com/Matching-consecutive-events-tp4018980.html Sent from the Drools: User forum mailing list archive at Nabble.com.