Op 04-02-13 14:24, André Fróes schreef: Hello there. I've been trying to create a rule to plan the my workorders with higher priority first, but I'm not bein able to. First read up on the difference between "score weight" and "score levels": http://docs.jboss.org/drools/release/5.5.0.Final/drools-planner-docs/html... Does your business want to plan higher priority workitems always (= score level) or are there exceptions (= score weight)? Ask them this: if you can assign 1000000 low priority tasks or only 1 high priority task, what would you rather do? I tried creating a rule something like "conflictingLecturesInSamePeriod", but I'm getting lost. Example: I've implemented my previous example of engineer/workorders and added shitf and priority. The priorities goes from 1 to 5, the lowest it is, the more urgent it is (1-Highest, 2-High, etc..) I don't know how to compare it to the other in the list, so I tried checking with previous ID, but no success: ****************************** rule "workOrderByPriority" when $leftWorkOrderPriority : WorkOrder($leftWOP : id, $leftPriority : priority.priorityID) $righttWorkOrderPriority : WorkOrder(id >= $leftWOP, $rightPriority : priority.priorityID) $engineer: Engineer($id : id) then insertLogical(new IntConstraintOccurrence("workOrderByPriority", ConstraintType.NEGATIVE_SOFT, 1, <UNKNOWN>, $engineer)); makes no sense to me, especially since 1) there are no restrictions on engineer and 2) because it's the cause end ******************************* this above is the second attempt, the <UNKNOWN> is because i'm lost about what to add and also if i should add something there. the first try just pass straight forward ******************************* rule "workOrderByPriority" when $engineer : Engineer($worktime : worktime) $priority : WorkOrder($priorityId : priority.priorityID) then insertLogical(new IntConstraintOccurrence("workOrderByPriority", ConstraintType.NEGATIVE_SOFT, 2, $priority, $engineer)); end ******************************* i know i'm far from get even closer. In order to define the planner according to priority I think I should compare it with entire list isn't? I noticed that in some rules, and entire list is pointed. "Plan according to priority" is vague, here's are some suggestions on implementation: A) When there's unassigned workorder and there's an engineer capable of doing that workorder and the engineer has a workorder with a lower priority (use "exists" here) then the engineer should be doing the other workorder -1 (with the cause being the unassigned workorder) B) When there's an unassigned workorder then -1 * priority * 1000 (with the cause being the unassigned workorder) HTH I searched the guide and example for some tips, but the best I found was the course that compared 2 courses that I believe that will be the same thing i'll have to do with priorities. _______________________________________________ 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