Re: [rules-users] [Drools Planner] Multi depot CVRP / CVRPTW

Hi Geoffrey, After a long period away from this problem I've come back to it and I'm feeling a bit lost :-) Could you elaborate on how to best model the rules and domain objects. I've looked at the nurse rostering example but didn't find any clues on how to proceed. My first stab on this uses the following rules: rule "arrivalTime" when $vehicle : VrpVehicle() $customer : VrpCustomer( vehicle == $vehicle, $arrivalTime : arrivalTime) then insertLogical(new VrpCustomerVisitArrivalTime($customer, $arrivalTime)); end rule "arrivalWithinTimeWindow" when VrpCustomerVisitArrivalTime($c : customer, $a : arrival) not CustomerTimeWindow(customer == $c, $a > startTime, $a < endTime) then insertLogical(new IntConstraintOccurrence("arrivalWithinTimeWindow", ConstraintType.HARD, -$a, $c)) end I've added a method arrivalTime to VrpCustomer that walks the VrpAppearances to the Depot and accumulates the travel time between each appearance. (I'm using GraphHopper and the OpenStreetMap roadnetwork). This works similar to the getDistance(VrpLocation location). What I didn't grasp is how the rule in your example is using the CustomerTimeWindow? I'm assuming the CustomerTimeWindow is a property on VrpCustomer? Should I add each CustomerTimeWindow as a fact in the VrpSchedule.getProblemFacts? Btw, I'm using drools-planner 6.0.0-SNAPSHOT. Regards, Mats ps. I like the new name OptaPlanner. ds. On Tue, Nov 20, 2012 at 1:54 PM, Mats Norén <mats.noren(a)gmail.com&gt; wrote: