Op 07-02-13 15:15, André Fróes schreef: Hello! I'm still not getting good with drools rules, i'm trying several examples and basic ones. Some i did without any problem and understood plenty well, but when I try to make an approach to what i'm aiming, I'm not able to. Right now I'm trying to compose this: When there's an workorder with skill and there's and engineer with the skill and capable of doing that workorder then the engineer should do it So i tried something like this: rule "assignSkillWOToSkilledEngineer" when $wo : WorkOrder( $requiredSkill : requiredSkill ) $engineer : Engineer(skill == $requiredSkill) there's no restriction that the WorkerOrder is assigned to that engineer, so it matches with every engineer of that skill? then insertLogical(new IntConstraintOccurrence("assignSkillWOToSkilledEngineer", ConstraintType.NEGATIVE_HARD, 1, $engineer)); the cause $engineer is a problem: If an engineer combines with 2 workorders, it will only count for 1 point due the way insertLogical work. Normally the causes are the planning entities involved. Try insertLogical(new IntConstraintOccurrence("assignSkillWOToSkilledEngineer", ConstraintType.NEGATIVE_HARD, 1, $wo)); end I would write it like this (pseudo code): rule "assignSkillWOToSkilledEngineer" when $wo : WorkOrder( $requiredSkill : requiredSkill, $assignedEngineer : assignedEngineer ) not EngineerSkillRelation(skill == $requiredSkill, engineer == $assignedEngineer) then insertLogical(new IntConstraintOccurrence("assignSkillWOToSkilledEngineer", ConstraintType.NEGATIVE_HARD, 1, $wo)); end i get no exceptions, but the sort is not working properly _______________________________________________ rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users