[rules-users] [planner] Hard constraints in drl, MoveFactory or isMoveDoable

Hi General question on the drools planner. If I'm not mistaken, I see three ways to impose hard constraints: 1. Generate violations in the scoring DRL. 2. Check them in isMoveDoable 3. Do not create moves in the MoveFactory which cause hard constraints to be broken. For safety I would always add a check in the DRL (1) in combination with 2 or 3 if possible. I assume that checks in isMoveDoable are more expensive in terms of performance and should only be put there if they can vary with each solution. Does this make sense? Evert -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/planner-Hard-constrai... Sent from the Drools - User mailing list archive at Nabble.com.