[rules-users] count with nested condition

Hi all, Our object deals with the clinical domain. We have a class LabEvent that represents a visit in the laboratory. Each event is associated (using the laboratoryResult association) with one or more LabResult objects (children), each represents the results of a particular test. in the rule LHS we want to express the following condition: "At least two LabEvents in the last month, with a LabResult with value greater than 1.8" of note, the application asserts the LabEvent objects to the workingMemory. in DRL we tried to write it as: ArrayList(size>1) from collect( LabEvent(eval( dateWithinLastMonths(effectiveTime,1)), results:laboratoryResult) LabResult( value >1.8) from results) Of course, the problem is that collect expects a single pattern... Does anyone has a simple idea how to express this business logic? Thanks, Yoni -- View this message in context: http://www.nabble.com/count-with-nested-condition-tp18710506p18710506.html Sent from the drools - user mailing list archive at Nabble.com.