[rules-users] Best model for planning?

Hi, I'd like some advice on how to make my model. I need to plan maintenance-schedules for - let's say - airplanes. Constraints are: - planes are only at given moments available for maintenance (when not in the air ;-) - maintenance of a planes requires a number of techniciens (with specific skills). - techniciens have skills and also shifts and vacation. Now, first I tought to make the maintenance of a plane the planningEntity. But I did not know how to populate and match the techniciens. So, second I tought to make a new Task-class the planningEntity. A Task is a job that needs to be done by a technicien with specific skills. Maintaining a plane requires then a number of tasks. If I choose this model, I think I'll have to pass two Plannings variables to the Task planningEntity: 1) a Maintenance-fact (Plane + Period + list of required tasks) and 2) a Technicien-fact (?) Then I'll need to check if availabity of plane and availability of technicien match and also skill-requirement of task and skills of technicien. Do you think this second model is the right one? Will it perform well? => ? matching all combinations of plane availabilty and techniciens-availability and -skills. Thanks in advance -- View this message in context: http://drools.46999.n3.nabble.com/Best-model-for-planning-tp4019464.html Sent from the Drools: User forum mailing list archive at Nabble.com.