[SOLVED] jsprit how to add picked-up shipment to a vehicle

jsprit how to add picked-up shipment to a vehicle

I want to recover the VRP problem from a context. In that context some vehicle might already loaded some shipments and en route of delivery. Or maybe it's going to the pickup location for pickup.

I don't want to re-assign those tasks to other vehicles. How can I assign them to the vehicles in that context?

My current workaround is set the picked-up very near to that vehicle's context location and a tight pickup window and a required skill to force the vehicle to pick it up. (this might not always work, so I need a hard writing way to do the set up)

Many thanks!

Solution

You can try jsprit's initial route feature. You can refer to this post in jsprit's old mailing list and the example here.

EDIT:

essential parts of the answer:

VehicleRoute initialRoute_withShipmentsAndServices = VehicleRoute.Builder.newInstance(vehicle3)
    .addPickup(shipment1).addPickup(shipment2)
    .addService(service3).addService(service4)
    .addDelivery(shipment2).addDelivery(shipment1)
    .build();

vrpBuilder.addInitialVehicleRoute(initialRoute_withShipmentsAndServices);