Only Activate if needed

Author: braktar

jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/ConstraintManager.java

@@ -20,6 +20,8 @@
 import com.graphhopper.jsprit.core.problem.misc.JobInsertionContext;
 import com.graphhopper.jsprit.core.problem.solution.route.activity.TourActivity;
 import com.graphhopper.jsprit.core.problem.solution.route.state.RouteAndActivityStateGetter;
+import com.graphhopper.jsprit.core.problem.vehicle.Vehicle;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -107,7 +109,12 @@ public void addTimeWindowConstraint() {
 
     public void addRouteDurationConstraint() {
         if (!routeDurationConstraintsSet) {
-            addConstraint(new VehicleRouteDurationConstraints(stateManager, vrp.getTransportCosts(), vrp.getActivityCosts()), Priority.HIGH);
+            boolean useConstraint = false;
+            for(Vehicle vehc : vrp.getVehicles())
+                if(vehc.getMaximumRouteDuration() != null)
+                    useConstraint = true;
+            if(useConstraint)
+                addConstraint(new VehicleRouteDurationConstraints(stateManager, vrp.getTransportCosts(), vrp.getActivityCosts()), Priority.HIGH);
             routeDurationConstraintsSet = true;
         }
     }

jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/constraint/VehicleRouteDurationConstraints.java

@@ -47,6 +47,9 @@ public VehicleRouteDurationConstraints(RouteAndActivityStateGetter states, Vehic
 
     @Override
     public ConstraintsStatus fulfilled(JobInsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
+        if(iFacts.getNewVehicle().getMaximumRouteDuration() == null)
+            return ConstraintsStatus.FULFILLED;
+
         double maximumVehicleDuration = iFacts.getNewVehicle().getMaximumRouteDuration();
 
         double routeDurationIncrease;

jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/io/VrpXMLWriter.java

@@ -365,7 +365,8 @@ private void writeVehiclesAndTheirTypes(XMLConfiguration xmlConfig) {
             }
             xmlConfig.setProperty(vehiclePathString + "(" + counter + ").timeSchedule.start", vehicle.getEarliestDeparture());
             xmlConfig.setProperty(vehiclePathString + "(" + counter + ").timeSchedule.end", vehicle.getLatestArrival());
-            xmlConfig.setProperty(vehiclePathString + "(" + counter + ").duration", vehicle.getMaximumRouteDuration());
+            if (vehicle.getMaximumRouteDuration() != null)
+                xmlConfig.setProperty(vehiclePathString + "(" + counter + ").duration", vehicle.getMaximumRouteDuration());
 
             if (vehicle.getBreak() != null) {
                 Collection<TimeWindow> tws = vehicle.getBreak().getTimeWindows();

jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/vehicle/Vehicle.java

@@ -74,5 +74,5 @@ public interface Vehicle extends HasId, HasIndex {
 
     public abstract Break getBreak();
 
-    public abstract double getMaximumRouteDuration();
+    public abstract Double getMaximumRouteDuration();
 }

jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/vehicle/VehicleImpl.java

@@ -95,8 +95,8 @@ public Break getBreak() {
         }
 
         @Override
-        public double getMaximumRouteDuration() {
-            return 0;
+        public Double getMaximumRouteDuration() {
+            return null;
         }
 
     }
@@ -134,7 +134,7 @@ public static class Builder {
 
         private Break aBreak;
 
-        private double maximumRouteDuration = Double.MAX_VALUE;
+        private Double maximumRouteDuration = null;
 
         private Builder(String id) {
             super();
@@ -307,7 +307,7 @@ public static NoVehicle createNoVehicle() {
 
     private final Location startLocation;
 
-    private final double maximumRouteDuration;
+    private final Double maximumRouteDuration;
 
     private final Break aBreak;
 
@@ -387,7 +387,7 @@ public Break getBreak() {
     }
 
     @Override
-    public double getMaximumRouteDuration() {
+    public Double getMaximumRouteDuration() {
         return maximumRouteDuration;
     }
 

jsprit-core/src/main/java/com/graphhopper/jsprit/core/problem/vehicle/VehicleTypeKey.java

@@ -37,9 +37,9 @@ public class VehicleTypeKey extends AbstractVehicle.AbstractTypeKey {
     public final double latestEnd;
     public final Skills skills;
     public final boolean returnToDepot;
-    public final double maximumRouteDuration;
+    public Double maximumRouteDuration = null;
 
-    public VehicleTypeKey(String typeId, String startLocationId, String endLocationId, double earliestStart, double latestEnd, Skills skills, boolean returnToDepot, double maximumRouteDuration) {
+    public VehicleTypeKey(String typeId, String startLocationId, String endLocationId, double earliestStart, double latestEnd, Skills skills, boolean returnToDepot, Double maximumRouteDuration) {
         super();
         this.type = typeId;
         this.startLocationId = startLocationId;
@@ -65,7 +65,9 @@ public boolean equals(Object o) {
         if (!skills.equals(that.skills)) return false;
         if (!startLocationId.equals(that.startLocationId)) return false;
         if (!type.equals(that.type)) return false;
-        if (Double.compare(that.maximumRouteDuration, maximumRouteDuration) != 0) return false;
+        if (that.maximumRouteDuration == null ^ maximumRouteDuration == null) return false;
+        if (that.maximumRouteDuration != null && maximumRouteDuration != null
+                && Double.compare(that.maximumRouteDuration, maximumRouteDuration) != 0) return false;
 
         return true;
     }
@@ -83,7 +85,10 @@ public int hashCode() {
         result = 31 * result + (int) (temp ^ (temp >>> 32));
         result = 31 * result + skills.hashCode();
         result = 31 * result + (returnToDepot ? 1 : 0);
-        temp = Double.doubleToLongBits(maximumRouteDuration);
+        if(maximumRouteDuration != null)
+            temp = Double.doubleToLongBits(maximumRouteDuration);
+        else
+            temp = Double.doubleToLongBits(Double.MAX_VALUE);
         result = 31 * result + (int) (temp ^ (temp >>> 32));
         return result;
     }
@@ -92,7 +97,9 @@ public int hashCode() {
     public String toString() {
         StringBuilder stringBuilder = new StringBuilder();
         stringBuilder.append(type).append("_").append(startLocationId).append("_").append(endLocationId)
-            .append("_").append(Double.toString(earliestStart)).append("_").append(Double.toString(latestEnd)).append("_").append(maximumRouteDuration);
+            .append("_").append(Double.toString(earliestStart)).append("_").append(Double.toString(latestEnd));
+            if(maximumRouteDuration != null)
+                stringBuilder.append("_").append(maximumRouteDuration);
         return stringBuilder.toString();
     }