[rules-users] 'not exist' and decision tables

Hi all, We are trying to express the following business logic: "IF there is no LabEvent of type <T> in the last <N> days THEN raise an alert". Where <T> and <N> are: "INR", 7 "CBC", 14 "AST", 30 etc. writing this in DRL will be something like: when not exist ( LabEvent(type==T && eval(inLastNDays(date,N)))) On first look, this looks as a classical decision table. Each column in a DT is a field constraint. But, where can we write the 'not exist' expression? In addition, is there an easy way to see the rules (in DRL) generated from a DT? Thanks for the help, Yoni -- View this message in context: http://www.nabble.com/%27not-exist%27-and-decision-tables-tp18728156p1872... Sent from the drools - user mailing list archive at Nabble.com.