Re: [rules-users] firing rules twice in single session on single object

A rule like when sales : Sales (salesAmount >=200) then sales.setSalesMessage("goodsales"); end will not trigger any new evaluation because the engine can't detect the change. You'll need to make the engine aware of the change : when sales : Sales (salesAmount >=200) then modify (sales) { setSalesMessage("goodsales"); } end Notice that "modify" does NOT simply cause rules to re-fire. It causes a reevaluation of the object which has been modified. Any rule with a pattern that matches the new version of the object will become active gain. In your case, since you do not have any constraints on the salesMessage, any precondition that was holding before the set will be still holding and your rule will LOOP. You will have to add a "salesMessage == null" condition in the LHS, or mark the Sales class as @propertyReactive. I would also like to understand your requirement of "firing rules TWICE".. do you need to evaluate your fact both before and after setting the message? (the salesamount would be unchanged) Davide -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-firing-rules-twice-in-singl... Sent from the Drools: User forum mailing list archive at Nabble.com.