[rules-users] Difficulty determining why I have score corruption

Hi, I have been at this a couple of days now but I am getting score corruption from a rule that does the following: rule "to bigger gap" when $res: ResourceInstance() $resList : ArrayList(size > 1) from collect( TripAtTimeWithResource(resource == $res) ) then -- Sort the list using custom comparator. -- Measure a series of deltas between elements in the list. -- If the delta is larger than a threshold add a soft constraint. insertLogical(new IntConstraintOccurrence("to bigger gap", ConstraintType.NEGATIVE_SOFT,delta * 10, ttrL)); end The TripAtTimeWithResource is the planning entity. I have checked the cloning and been through and checked that all equals and hashcode methods and they are correct. If I take this rule out the implementation functions as correctly. Interestingly though I first prototyped this using a simple score and with the same 'when' and 'then' clause (inserting a different fact) and no score corruption was observed. If anyone has any suggestions I would really like to hear from you. Cheers Megan Woods Extract from exception: The workingMemory has 3 ConstraintOccurrence(s) in excess: to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@43b, resource=All(17), startTime=TimeUnit [minute=285]]]=750 to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@46c, resource=All(17), startTime=TimeUnit [minute=75]]]=1700 to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@421, resource=All(17), startTime=TimeUnit [minute=75]]]=960 The workingMemory has 4 ConstraintOccurrence(s) lacking: overlapping trips with same resource/NEGATIVE_HARD:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@43b, resource=All(17), startTime=TimeUnit [minute=285]]]=100 to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@421, resource=All(17), startTime=TimeUnit [minute=75]]]=1710 to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@43b, resource=All(17), startTime=TimeUnit [minute=285]]]=1650 to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource [trip=a.c.t.p.p.m.TripInstance@46c, resource=All(17), startTime=TimeUnit [minute=75]]]=950 -- View this message in context: http://drools.46999.n3.nabble.com/Difficulty-determining-why-I-have-score... Sent from the Drools: User forum mailing list archive at Nabble.com.