[rules-users] Questions about logically justified objects

Let's say I have 2 rooms: - Room A with penalty 10 - Room B with penalty 5 Both are inserted into the WM and never change. Let's say I have 1 exam: - Exam X which starts out assigned to Room A. It's inserted into the WM, but it will change when rules are fired. Let's say I have this rule: rule "roomPenalty" when $exam : Exam(); then Object cause = $exam; int weight = $exam.getRoom().getPenalty(); insertLogical(new Penalty(cause, weight); end After my first fireAllRules, there is 1 logical asserted Penalty(10). Next, I switch Exam X to Room B (instead of Room A) and I fire all Rules. The _same_ rule applies on the _same_ fact and a logical asserted Penalty(5) is inserted. How do I enable the following different use cases? 1) Keep Penalty(10), discard Penalty(5) 2) Remove Penalty(10), add Penalty(5) 3) Keep Penalty(10), add Penalty(5) What happens if: 1) Penalty's equals/hashcode only uses "cause"? 2) Penalty's equals/hashcode uses both "cause" and "weight"? -- With kind regards, Geoffrey De Smet