Of course, I could call WorkingMemory.getObjects() in my consequence and process the list looking for absence of the object in question. But this seems inelegant in that I am actually performing what should be a conditional in my consequence.
-Mitch -----Original Message----- From: Mitch Christensen [mailto:[EMAIL PROTECTED] Sent: Friday, February 10, 2006 7:49 AM To: [email protected] Subject: [drools-user] Firing rules when something DOESN'T exist Hey, I've used rules engines in the past the support the notion of a NOT pattern/conditional element for firing rules when a particular item doesn't exist in working memory. Does Drools support such a feature? I can't find it in the docs. I want to apply the following logic: IF there is an event object available AND there is no existing event history object THEN. -Mitch
