com.graphhopper.jsprit.core.problem.constraint

Class PickupAndDeliverShipmentLoadActivityLevelConstraint

java.lang.Object

com.graphhopper.jsprit.core.problem.constraint.PickupAndDeliverShipmentLoadActivityLevelConstraint

All Implemented Interfaces:

Constraint, HardActivityConstraint, HardConstraint

public class PickupAndDeliverShipmentLoadActivityLevelConstraint
extends Object
implements HardActivityConstraint

Constraint that ensures capacity constraint at each activity.

This is critical to consistently calculate pd-problems with capacity constraints. Critical means that is MUST be visited. It also assumes that pd-activities are visited in the order they occur in a tour.

Author:

schroeder

Nested Class Summary

Nested classes/interfaces inherited from interface com.graphhopper.jsprit.core.problem.constraint.HardActivityConstraint

HardActivityConstraint.ConstraintsStatus

Constructor Summary

Constructors

Constructor and Description
PickupAndDeliverShipmentLoadActivityLevelConstraint(RouteAndActivityStateGetter stateManager) Constructs the constraint ensuring capacity constraint at each activity.

Method Summary

Modifier and Type	Method and Description
HardActivityConstraint.ConstraintsStatus	fulfilled(JobInsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) Checks whether there is enough capacity to insert newAct between prevAct and nextAct.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PickupAndDeliverShipmentLoadActivityLevelConstraint

public PickupAndDeliverShipmentLoadActivityLevelConstraint(RouteAndActivityStateGetter stateManager)

Constructs the constraint ensuring capacity constraint at each activity.

This is critical to consistently calculate pd-problems with capacity constraints. Critical means that is MUST be visited. It also assumes that pd-activities are visited in the order they occur in a tour.

Parameters:

stateManager - the stateManager

Method Detail

fulfilled

public HardActivityConstraint.ConstraintsStatus fulfilled(JobInsertionContext iFacts,
                                                          TourActivity prevAct,
                                                          TourActivity newAct,
                                                          TourActivity nextAct,
                                                          double prevActDepTime)

Checks whether there is enough capacity to insert newAct between prevAct and nextAct.

Specified by:

fulfilled in interface HardActivityConstraint

Parameters:

iFacts - JobInsertionContext provides additional information that might be important when evaluating the insertion of newAct

prevAct - the previous activity, i.e. the activity before the new activity

newAct - the new activity to be inserted in between prevAct and nextAct

nextAct - the next activity, i.e. the activity after the new activity

prevActDepTime - the departure time at previous activity (prevAct) with the new vehicle (iFacts.getNewVehicle())

Returns:

fulfilled if hard constraint is met, other not fulfilled.