Re: [rules-users] Turning a non-statefull accumulate into a statefull insertLogical

Hi, In my statefull working memory on which I fireAllRules over a 1000 timse per second, I have rule which hurts performance because it gets backwards chained (which is bad in my use case): // More seating required during a period in a room than available // in that room. rule "roomCapacityTooSmall" // TODO improve performance, as it takes 50% of the performance when $period : Period(); $room : Room($capacity : capacity); $totalStudentListSize : Number(intValue > $capacity) from accumulate( Exam(period == $period, room == $room, $studentListSize : topicStudentListSize), sum($studentListSize) ); then insertLogical(new IntConstraintOccurrence( "roomCapacityTooSmall", ConstraintType.NEGATIVE_HARD, $period, $room)); end In an effort to turn this into a statefull insertLogical, I 've tried this: // More seating required during a period in a room than available // in that room. rule "existExamSeating" when $period : Period(); $room : Room(); exists Exam(period == $period, room == $room); not ExamSeating(period == $period, room == $room); then insertLogical(new ExamSeating($period, $room)); end rule "addExamToExamSeating" when $exam : Exam($period : period, $room : room); $examSeating : ExamSeating(period == $period, room == $room, examSet not contains $exam); then $examSeating.getExamSet().add($exam); update($examSeating); end rule "removeExamFromExamSeatingPeriod" when $exam : Exam($period : period, $room : room); $examSeating : ExamSeating(examSet contains $exam, period != $period); then $examSeating.getExamSet().remove($exam); update($examSeating); end rule "removeExamFromExamSeatingRoom" when $exam : Exam($period : period, $room : room); $examSeating : ExamSeating(examSet contains $exam, room != room); then $examSeating.getExamSet().remove($exam); update($examSeating); end rule "roomCapacityTooSmall" when $examSeating : ExamSeating(studentSize > roomCapacity, $period : period, $room : room); then insertLogical(new IntConstraintOccurrence( "roomCapacityTooSmall", ConstraintType.NEGATIVE_HARD, $period, $room)); end However, this turns out to be so slow it's at least 100 times slower (and probably a lot more as I had no time to let the benchmark finish). What could explain this? Is "exists" or "contains" backwards chained? Am I missing something? Thanks for any and all help. -- With kind regards, Geoffrey De Smet _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users