yeah thats a really powerful feature, and is definately going to be part of Drools 3.
It will work something like: not Person(name == "michael") which says, there is NO person called michael. Of course, you can work around this now, either by baking some of the logic into your model, or looking through working memory (which is possibly slower). Regards, Michael. On 2/11/06, Mitch Christensen <[EMAIL PROTECTED]> wrote: > > 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 > > >
