Merge remote-tracking branch 'choose_remote_name/relaxAPI' into

PickupAndDelivery

Conflicts:
	jsprit-core/src/main/java/algorithms/CalculatorBuilder.java
	jsprit-core/src/main/java/algorithms/HardConstraints.java
	jsprit-core/src/main/java/algorithms/ServiceInsertionCalculator.java
	jsprit-core/src/main/java/basics/route/TourActivities.java
	jsprit-core/src/test/java/algorithms/BuildCVRPAlgoFromScratchTest.java
	jsprit-core/src/test/java/algorithms/BuildPDVRPAlgoFromScratchTest.java
	jsprit-core/src/test/java/algorithms/GendreauPostOptTest.java
	jsprit-core/src/test/java/algorithms/TestCalculatesServiceInsertion.java

Changelog.md

@@ -1,21 +0,0 @@
-Change-log
-==========
-**v0.0.4** @ 2013-10-17
-
-- A number of internal improvements
-- License change from GPLv2 to LGPLv3
-- Add premature algorithm termination: PrematureAlgorithmBreaker.java and its implementations
-- SearchStrategy.java: public SearchStrategy(SolutionSelector,SolutionAcceptor) --> public SearchStratgy(SolutionSelector,SolutionAcceptor,SolutionCostCalculator)
-- SearchStrategy.java: public boolean run(...) --> public DiscoveredSolution run(...)
-- VehicleImpl.VehicleType.Builder --> VehicleTypeImpl.Builder
-- VehicleImpl.VehicleBuilder --> VehicleImpl.Builder
-
-**v0.0.3** @ 2013-06-04
-
-- Bug fix - access resources in jar
-
-**v0.0.2** @ 2013-06-03
-
-- Bug fix - access resources in jar
-
-**v0.0.1** @ 2013-06-02

jsprit-analysis/src/main/java/analysis/AlgorithmSearchProgressChartListener.java

@@ -118,8 +118,10 @@ public class AlgorithmSearchProgressChartListener implements IterationEndsListen
 		XYPlot plot = chart.getXYPlot();
 		
 		NumberAxis yAxis = (NumberAxis) plot.getRangeAxis();
-		Range rangeY = new Range(minValue-0.05*minValue,maxValue + 0.05*maxValue);
+		Range rangeBounds = coll.getRangeBounds(true);
-		yAxis.setRange(rangeY);
+		double upper = Math.min(rangeBounds.getUpperBound(), rangeBounds.getLowerBound()*5);
+		if(upper == 0.0){ upper = 10000; }
+		yAxis.setRangeWithMargins(rangeBounds.getLowerBound(),upper);
 		
 		try {
 			ChartUtilities.saveChartAsJPEG(new File(filename), chart, 1000, 600);
@@ -143,9 +145,9 @@ public class AlgorithmSearchProgressChartListener implements IterationEndsListen
 		double best = Double.MAX_VALUE;
 		double sum = 0.0;
 		for(VehicleRoutingProblemSolution sol : solutions){
-			if(sol.getCost() > worst) worst = sol.getCost();
+			if(sol.getCost() > worst) worst = Math.min(sol.getCost(),Double.MAX_VALUE);
 			if(sol.getCost() < best) best = sol.getCost();
-			sum += sol.getCost();
+			sum += Math.min(sol.getCost(),Double.MAX_VALUE);
 		}
 		bestResultList.add(best);
 		worstResultList.add(worst);

jsprit-core/src/main/java/algorithms/ActivityInsertionCostsCalculator.java

@@ -22,9 +22,9 @@ package algorithms;
 
 import basics.route.TourActivity;
 
-interface ActivityInsertionCostsCalculator {
+public interface ActivityInsertionCostsCalculator {
 	
-	class ActivityInsertionCosts {
+	public class ActivityInsertionCosts {
 		
 		private double additionalCosts;
 		private double additionalTime;
@@ -50,6 +50,6 @@ interface ActivityInsertionCostsCalculator {
 
 	}
 	
-	ActivityInsertionCosts calculate(InsertionContext iContext, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double depTimeAtPrevAct);
+	public ActivityInsertionCosts getCosts(InsertionContext iContext, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double depTimeAtPrevAct);
 
 }

jsprit-core/src/main/java/algorithms/AvgJobDistance.java

@@ -52,7 +52,7 @@ class AvgJobDistance implements JobDistance {
 	 * <p>If the distance between two jobs cannot be calculated with input-transport costs, it tries the euclidean distance between these jobs.
 	 */ 
 	@Override
-	public double calculateDistance(Job i, Job j) {
+	public double getDistance(Job i, Job j) {
 		if (i.equals(j)) return 0.0;
 
 		if (i instanceof Service && j instanceof Service) {

jsprit-core/src/main/java/algorithms/BestInsertion.java

@@ -42,6 +42,28 @@ import basics.route.VehicleRoute;
 
 final class BestInsertion implements InsertionStrategy{
 	
+	class Insertion {
+		
+		private final VehicleRoute route;
+		
+		private final InsertionData insertionData;
+
+		public Insertion(VehicleRoute vehicleRoute, InsertionData insertionData) {
+			super();
+			this.route = vehicleRoute;
+			this.insertionData = insertionData;
+		}
+
+		public VehicleRoute getRoute() {
+			return route;
+		}
+		
+		public InsertionData getInsertionData() {
+			return insertionData;
+		}
+		
+	}
+	
 	private static Logger logger = Logger.getLogger(BestInsertion.class);
 
 	private Random random = RandomNumberGeneration.getRandom();
@@ -56,7 +78,7 @@ final class BestInsertion implements InsertionStrategy{
 	
 	private Inserter inserter;
 	
-	private JobInsertionCalculator bestInsertionCostCalculator;
+	private JobInsertionCostsCalculator bestInsertionCostCalculator;
 
 	private boolean minVehiclesFirst = false;
 
@@ -64,7 +86,7 @@ final class BestInsertion implements InsertionStrategy{
 		this.random = random;
 	}
 	
-	public BestInsertion(JobInsertionCalculator jobInsertionCalculator) {
+	public BestInsertion(JobInsertionCostsCalculator jobInsertionCalculator) {
 		super();
 		this.insertionsListeners = new InsertionListeners();
 		inserter = new Inserter(insertionsListeners);
@@ -86,7 +108,7 @@ final class BestInsertion implements InsertionStrategy{
 			Insertion bestInsertion = null;
 			double bestInsertionCost = Double.MAX_VALUE;
 			for(VehicleRoute vehicleRoute : vehicleRoutes){
-				InsertionData iData = bestInsertionCostCalculator.calculate(vehicleRoute, unassignedJob, NO_NEW_VEHICLE_YET, NO_NEW_DEPARTURE_TIME_YET, NO_NEW_DRIVER_YET, bestInsertionCost); 
+				InsertionData iData = bestInsertionCostCalculator.getInsertionData(vehicleRoute, unassignedJob, NO_NEW_VEHICLE_YET, NO_NEW_DEPARTURE_TIME_YET, NO_NEW_DRIVER_YET, bestInsertionCost); 
 				if(iData instanceof NoInsertionFound) {
 					continue;
 				}
@@ -97,7 +119,7 @@ final class BestInsertion implements InsertionStrategy{
 			}
 			if(!minVehiclesFirst){
 				VehicleRoute newRoute = VehicleRoute.emptyRoute();
-				InsertionData newIData = bestInsertionCostCalculator.calculate(newRoute, unassignedJob, NO_NEW_VEHICLE_YET, NO_NEW_DEPARTURE_TIME_YET, NO_NEW_DRIVER_YET, bestInsertionCost);
+				InsertionData newIData = bestInsertionCostCalculator.getInsertionData(newRoute, unassignedJob, NO_NEW_VEHICLE_YET, NO_NEW_DEPARTURE_TIME_YET, NO_NEW_DRIVER_YET, bestInsertionCost);
 				if(newIData.getInsertionCost() < bestInsertionCost){
 					bestInsertion = new Insertion(newRoute,newIData);
 					bestInsertionCost = newIData.getInsertionCost();
@@ -106,7 +128,7 @@ final class BestInsertion implements InsertionStrategy{
 			}			
 			if(bestInsertion == null){
 				VehicleRoute newRoute = VehicleRoute.emptyRoute();
-				InsertionData bestI = bestInsertionCostCalculator.calculate(newRoute, unassignedJob, NO_NEW_VEHICLE_YET, NO_NEW_DEPARTURE_TIME_YET, NO_NEW_DRIVER_YET, Double.MAX_VALUE);
+				InsertionData bestI = bestInsertionCostCalculator.getInsertionData(newRoute, unassignedJob, NO_NEW_VEHICLE_YET, NO_NEW_DEPARTURE_TIME_YET, NO_NEW_DRIVER_YET, Double.MAX_VALUE);
 				if(bestI instanceof InsertionData.NoInsertionFound){
 					throw new IllegalStateException(getErrorMsg(unassignedJob));
 				}

jsprit-core/src/main/java/algorithms/BestInsertionBuilder.java

@@ -0,0 +1,129 @@
+package algorithms;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import basics.VehicleRoutingProblem;
+import basics.VehicleRoutingProblem.Constraint;
+import basics.algo.InsertionListener;
+import basics.algo.VehicleRoutingAlgorithmListeners.PrioritizedVRAListener;
+import basics.route.VehicleFleetManager;
+
+public class BestInsertionBuilder implements InsertionStrategyBuilder{
+
+	private VehicleRoutingProblem vrp;
+	
+	private StateManager stateManager;
+	
+	private boolean local = true;
+	
+	private ConstraintManager constraintManager;
+
+	private VehicleFleetManager fleetManager;
+
+	private double weightOfFixedCosts;
+
+	private boolean considerFixedCosts = false;
+
+	private ActivityInsertionCostsCalculator actInsertionCostsCalculator = null;
+
+	private int forwaredLooking;
+
+	private int memory;
+	
+	public BestInsertionBuilder(VehicleRoutingProblem vrp, VehicleFleetManager vehicleFleetManager, StateManager stateManager) {
+		super();
+		this.vrp = vrp;
+		this.stateManager = stateManager;
+		this.constraintManager = new ConstraintManager();
+		this.fleetManager = vehicleFleetManager;
+		addCoreStateUpdaters();
+	}
+	
+	private void addCoreStateUpdaters(){
+		stateManager.addListener(new UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts(stateManager));
+		stateManager.addListener(new UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted(stateManager));
+		
+		stateManager.addActivityVisitor(new UpdateMaxLoad(stateManager));
+		stateManager.addActivityVisitor(new UpdateActivityTimes(vrp.getTransportCosts()));
+		stateManager.addActivityVisitor(new UpdateCostsAtAllLevels(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager));
+	}
+	
+	public BestInsertionBuilder addHardLoadConstraints(){
+		constraintManager.addConstraint(new HardPickupAndDeliveryLoadRouteLevelConstraint(stateManager));
+		if(vrp.getProblemConstraints().contains(Constraint.DELIVERIES_FIRST)){
+			constraintManager.addConstraint(new HardPickupAndDeliveryBackhaulActivityLevelConstraint(stateManager));
+		}
+		else{
+			constraintManager.addConstraint(new HardPickupAndDeliveryActivityLevelConstraint(stateManager));
+		}
+		stateManager.addActivityVisitor(new UpdateOccuredDeliveriesAtActivityLevel(stateManager));
+		stateManager.addActivityVisitor(new UpdateFuturePickupsAtActivityLevel(stateManager));
+		return this;
+	}
+	
+	public BestInsertionBuilder addHardTimeWindowConstraint(){
+		constraintManager.addConstraint(new HardTimeWindowActivityLevelConstraint(stateManager, vrp.getTransportCosts()));
+//		stateManager.addActivityVisitor(new UpdateEarliestStartTimeWindowAtActLocations(stateManager, vrp.getTransportCosts()));
+		stateManager.addActivityVisitor(new UpdateLatestOperationStartTimeAtActLocations(stateManager, vrp.getTransportCosts()));
+		return this;
+	}
+	
+
+	public BestInsertionBuilder addConstraint(HardActivityLevelConstraint hardActvitiyLevelConstraint){
+		constraintManager.addConstraint(hardActvitiyLevelConstraint);
+		return this;
+	};
+	
+	public BestInsertionBuilder addConstraint(HardRouteLevelConstraint hardRouteLevelConstraint){
+		constraintManager.addConstraint(hardRouteLevelConstraint);
+		return this;
+	};
+	
+	public void setRouteLevel(int forwardLooking, int memory){
+		local = false;
+		this.forwaredLooking = forwardLooking;
+		this.memory = memory;
+	};
+	
+	public BestInsertionBuilder setLocalLevel(){
+		local = true;
+		return this;
+	};
+	
+	public BestInsertionBuilder considerFixedCosts(double weightOfFixedCosts){
+		this.weightOfFixedCosts = weightOfFixedCosts;
+		this.considerFixedCosts  = true;
+		return this;
+	}
+	
+	public void setActivityInsertionCostCalculator(ActivityInsertionCostsCalculator activityInsertionCostsCalculator){
+		this.actInsertionCostsCalculator = activityInsertionCostsCalculator;
+	};
+	
+	@Override
+	public InsertionStrategy build() {
+		List<InsertionListener> iListeners = new ArrayList<InsertionListener>();
+		List<PrioritizedVRAListener> algorithmListeners = new ArrayList<PrioritizedVRAListener>();
+		CalculatorBuilder calcBuilder = new CalculatorBuilder(iListeners, algorithmListeners);
+		if(local){
+			calcBuilder.setLocalLevel();
+		}
+		else {
+			calcBuilder.setRouteLevel(forwaredLooking, memory);
+		}
+		calcBuilder.setConstraintManager(constraintManager);
+		calcBuilder.setStates(stateManager);
+		calcBuilder.setVehicleRoutingProblem(vrp);
+		calcBuilder.setVehicleFleetManager(fleetManager);
+		calcBuilder.setActivityInsertionCostsCalculator(actInsertionCostsCalculator);
+		if(considerFixedCosts) {
+			calcBuilder.considerFixedCosts(weightOfFixedCosts);
+		}
+		JobInsertionCostsCalculator jobInsertions = calcBuilder.build();
+		BestInsertion bestInsertion = new BestInsertion(jobInsertions);
+		for(InsertionListener l : iListeners) bestInsertion.addListener(l); 
+		return bestInsertion;
+	}
+
+}

jsprit-core/src/main/java/algorithms/BestInsertionStrategyFactory.java

@@ -0,0 +1,19 @@
+package algorithms;
+
+import basics.VehicleRoutingProblem;
+
+public class BestInsertionStrategyFactory implements InsertionStrategyFactory{
+
+	private JobInsertionCostsCalculator jobInsertionCalculator;
+	
+	public BestInsertionStrategyFactory(JobInsertionCostsCalculator jobInsertionCalculator) {
+		super();
+		this.jobInsertionCalculator = jobInsertionCalculator;
+	}
+
+	@Override
+	public InsertionStrategy createStrategy(VehicleRoutingProblem vrp) {
+		return new BestInsertion(jobInsertionCalculator);
+	}
+
+}

jsprit-core/src/main/java/algorithms/CalculatesServiceInsertionWithTimeScheduling.java

@@ -27,11 +27,11 @@ import basics.route.Driver;
 import basics.route.Vehicle;
 import basics.route.VehicleRoute;
 
-class CalculatesServiceInsertionWithTimeScheduling implements JobInsertionCalculator{
+class CalculatesServiceInsertionWithTimeScheduling implements JobInsertionCostsCalculator{
 
 	private static Logger log = Logger.getLogger(CalculatesServiceInsertionWithTimeScheduling.class);
 	
-	private JobInsertionCalculator jic;
+	private JobInsertionCostsCalculator jic;
 	
 	private Random random = new Random();
 	
@@ -39,7 +39,7 @@ class CalculatesServiceInsertionWithTimeScheduling implements JobInsertionCalcul
 	
 	private double timeSlice = 900.0;
 	
-	public CalculatesServiceInsertionWithTimeScheduling(JobInsertionCalculator jic, double timeSlice, int neighbors) {
+	public CalculatesServiceInsertionWithTimeScheduling(JobInsertionCostsCalculator jic, double timeSlice, int neighbors) {
 		super();
 		this.jic = jic;
 		this.timeSlice = timeSlice;
@@ -53,7 +53,7 @@ class CalculatesServiceInsertionWithTimeScheduling implements JobInsertionCalcul
 	}
 
 	@Override
-	public InsertionData calculate(VehicleRoute currentRoute, Job jobToInsert, Vehicle newVehicle, double newVehicleDepartureTime, Driver newDriver, double bestKnownScore) {
+	public InsertionData getInsertionData(VehicleRoute currentRoute, Job jobToInsert, Vehicle newVehicle, double newVehicleDepartureTime, Driver newDriver, double bestKnownScore) {
 		List<Double> vehicleDepartureTimes = new ArrayList<Double>();
 		double currentStart;
 		if(currentRoute.getStart() == null){
@@ -74,7 +74,7 @@ class CalculatesServiceInsertionWithTimeScheduling implements JobInsertionCalcul
 	
 		InsertionData bestIData = null;
 		for(Double departureTime : vehicleDepartureTimes){
-			InsertionData iData = jic.calculate(currentRoute, jobToInsert, newVehicle, departureTime, newDriver, bestKnownScore);
+			InsertionData iData = jic.getInsertionData(currentRoute, jobToInsert, newVehicle, departureTime, newDriver, bestKnownScore);
 			if(bestIData == null) bestIData = iData;
 			else if(iData.getInsertionCost() < bestIData.getInsertionCost()){
 				iData.setVehicleDepartureTime(departureTime);

jsprit-core/src/main/java/algorithms/CalculationUtils.java

@@ -0,0 +1,38 @@
+/*******************************************************************************
+ * Copyright (C) 2013  Stefan Schroeder
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ * Contributors:
+ *     Stefan Schroeder - initial API and implementation
+ ******************************************************************************/
+package algorithms;
+
+import basics.route.TourActivity;
+
+class CalculationUtils {
+	
+
+	/**
+	 * Calculates actEndTime assuming that activity can at earliest start at act.getTheoreticalEarliestOperationStartTime().
+	 * 
+	 * @param actArrTime
+	 * @param act
+	 * @return
+	 */
+	public static double getActivityEndTime(double actArrTime, TourActivity act){
+		return Math.max(actArrTime, act.getTheoreticalEarliestOperationStartTime()) + act.getOperationTime();
+	}
+}

jsprit-core/src/main/java/algorithms/CalculatorBuilder.java

@@ -19,10 +19,10 @@ package algorithms;
 import java.util.ArrayList;
 import java.util.List;
 
-import algorithms.HardConstraints.ConstraintManager;
 import basics.VehicleRoutingProblem;
 import basics.algo.InsertionListener;
 import basics.algo.VehicleRoutingAlgorithmListeners.PrioritizedVRAListener;
+import basics.route.VehicleFleetManager;
 
 
 
@@ -30,16 +30,16 @@ class CalculatorBuilder {
 
 	private static class CalculatorPlusListeners {
 
-		private JobInsertionCalculator calculator;
+		private JobInsertionCostsCalculator calculator;
 
-		public JobInsertionCalculator getCalculator() {
+		public JobInsertionCostsCalculator getCalculator() {
 			return calculator;
 		}
 
 		private List<PrioritizedVRAListener> algorithmListener = new ArrayList<PrioritizedVRAListener>();
 		private List<InsertionListener> insertionListener = new ArrayList<InsertionListener>();
 
-		public CalculatorPlusListeners(JobInsertionCalculator calculator) {
+		public CalculatorPlusListeners(JobInsertionCostsCalculator calculator) {
 			super();
 			this.calculator = calculator;
 		}
@@ -59,7 +59,7 @@ class CalculatorBuilder {
 
 	private VehicleRoutingProblem vrp;
 
-	private StateManager states;
+	private StateGetter states;
 
 	private boolean local = true;
 
@@ -81,6 +81,8 @@ class CalculatorBuilder {
 	
 	private ConstraintManager constraintManager;
 	
+	private ActivityInsertionCostsCalculator activityInsertionCostCalculator = null;
+
 	/**
 	 * Constructs the builder.
 	 * 
@@ -102,7 +104,7 @@ class CalculatorBuilder {
 	 * 
 	 * @return
 	 */
-	public CalculatorBuilder setStates(StateManager states){
+	public CalculatorBuilder setStates(StateGetter states){
 		this.states = states;
 		return this;
 	}
@@ -138,6 +140,10 @@ class CalculatorBuilder {
 		local = true;
 	}
 	
+	public void setActivityInsertionCostsCalculator(ActivityInsertionCostsCalculator activityInsertionCostsCalculator){
+		this.activityInsertionCostCalculator = activityInsertionCostsCalculator;
+	}
+
 	/**
 	 * Sets a flag to build a calculator that evaluates job insertion on route-level.
 	 * 
@@ -173,11 +179,11 @@ class CalculatorBuilder {
 	 * @return jobInsertionCalculator.
 	 * @throws IllegalStateException if vrp == null or activityStates == null or fleetManager == null.
 	 */
-	public JobInsertionCalculator build(){
+	public JobInsertionCostsCalculator build(){
 		if(vrp == null) throw new IllegalStateException("vehicle-routing-problem is null, but it must be set (this.setVehicleRoutingProblem(vrp))");
 		if(states == null) throw new IllegalStateException("states is null, but is must be set (this.setStates(states))");
 		if(fleetManager == null) throw new IllegalStateException("fleetManager is null, but it must be set (this.setVehicleFleetManager(fleetManager))");
-		JobInsertionCalculator baseCalculator = null;
+		JobInsertionCostsCalculator baseCalculator = null;
 		CalculatorPlusListeners standardLocal = null;
 		if(local){
 			standardLocal = createStandardLocal(vrp, states);
@@ -212,40 +218,58 @@ class CalculatorBuilder {
 		}
 	}
 
-	private CalculatorPlusListeners createStandardLocal(VehicleRoutingProblem vrp, StateManager statesManager){
+	private CalculatorPlusListeners createStandardLocal(VehicleRoutingProblem vrp, StateGetter statesManager){
 		if(constraintManager == null) throw new IllegalStateException("constraint-manager is null");
  		
-		ActivityInsertionCostsCalculator defaultCalc = new LocalActivityInsertionCostsCalculator(vrp.getTransportCosts(), vrp.getActivityCosts(), constraintManager);
+//<<<<<<< HEAD
-		JobInsertionCalculator standardServiceInsertion = new ServiceInsertionCalculator(vrp.getTransportCosts(), defaultCalc, constraintManager);
+//		ActivityInsertionCostsCalculator defaultCalc = new LocalActivityInsertionCostsCalculator(vrp.getTransportCosts(), vrp.getActivityCosts(), constraintManager);
+//		JobInsertionCalculator standardServiceInsertion = new ServiceInsertionCalculator(vrp.getTransportCosts(), defaultCalc, constraintManager);
+//		
+//=======
+		ActivityInsertionCostsCalculator actInsertionCalc;
+		if(activityInsertionCostCalculator == null){
+			actInsertionCalc = new LocalActivityInsertionCostsCalculator(vrp.getTransportCosts(), vrp.getActivityCosts());
+		}
+		else{
+			actInsertionCalc = activityInsertionCostCalculator;
+		}
 
+		JobInsertionCostsCalculator standardServiceInsertion = new ServiceInsertionCalculator(vrp.getTransportCosts(), actInsertionCalc, constraintManager, constraintManager);
+//>>>>>>> refs/remotes/choose_remote_name/relaxAPI
 		((ServiceInsertionCalculator) standardServiceInsertion).setNeighborhood(vrp.getNeighborhood());
 		CalculatorPlusListeners calcPlusListeners = new CalculatorPlusListeners(standardServiceInsertion);
 		
 		return calcPlusListeners;
 	}
 
-	private CalculatorPlusListeners createCalculatorConsideringFixedCosts(VehicleRoutingProblem vrp, JobInsertionCalculator baseCalculator, StateManager activityStates2, double weightOfFixedCosts){
+	private CalculatorPlusListeners createCalculatorConsideringFixedCosts(VehicleRoutingProblem vrp, JobInsertionCostsCalculator baseCalculator, StateGetter activityStates2, double weightOfFixedCosts){
-		final CalculatesServiceInsertionConsideringFixCost withFixCost = new CalculatesServiceInsertionConsideringFixCost(baseCalculator, activityStates2);
+		final JobInsertionConsideringFixCostsCalculator withFixCost = new JobInsertionConsideringFixCostsCalculator(baseCalculator, activityStates2);
 		withFixCost.setWeightOfFixCost(weightOfFixedCosts);
 		CalculatorPlusListeners calcPlusListeners = new CalculatorPlusListeners(withFixCost);
 		calcPlusListeners.getInsertionListener().add(new ConfigureFixCostCalculator(vrp, withFixCost));
 		return calcPlusListeners;
 	}
 
-	private CalculatorPlusListeners createStandardRoute(VehicleRoutingProblem vrp, StateManager activityStates2, int forwardLooking, int solutionMemory){
+	private CalculatorPlusListeners createStandardRoute(VehicleRoutingProblem vrp, StateGetter activityStates2, int forwardLooking, int solutionMemory){
 		int after = forwardLooking;
-		ActivityInsertionCostsCalculator routeLevelCostEstimator = new RouteLevelActivityInsertionCostsEstimator(vrp.getTransportCosts(), vrp.getActivityCosts(), constraintManager, activityStates2);
+		ActivityInsertionCostsCalculator routeLevelCostEstimator;
-		JobInsertionCalculator jobInsertionCalculator = new CalculatesServiceInsertionOnRouteLevel(vrp.getTransportCosts(), vrp.getActivityCosts(), constraintManager, routeLevelCostEstimator);
+		if(activityInsertionCostCalculator == null){
-		((CalculatesServiceInsertionOnRouteLevel)jobInsertionCalculator).setNuOfActsForwardLooking(after);
+			routeLevelCostEstimator = new RouteLevelActivityInsertionCostsEstimator(vrp.getTransportCosts(), vrp.getActivityCosts(), activityStates2);
-		((CalculatesServiceInsertionOnRouteLevel)jobInsertionCalculator).setMemorySize(solutionMemory);
+		}
-		((CalculatesServiceInsertionOnRouteLevel)jobInsertionCalculator).setNeighborhood(vrp.getNeighborhood());
+		else{
-		((CalculatesServiceInsertionOnRouteLevel) jobInsertionCalculator).setStates(activityStates2);
+			routeLevelCostEstimator = activityInsertionCostCalculator;
+		}
+		JobInsertionCostsCalculator jobInsertionCalculator = new ServiceInsertionOnRouteLevelCalculator(vrp.getTransportCosts(), vrp.getActivityCosts(), routeLevelCostEstimator, constraintManager, constraintManager);
+		((ServiceInsertionOnRouteLevelCalculator)jobInsertionCalculator).setNuOfActsForwardLooking(after);
+		((ServiceInsertionOnRouteLevelCalculator)jobInsertionCalculator).setMemorySize(solutionMemory);
+		((ServiceInsertionOnRouteLevelCalculator)jobInsertionCalculator).setNeighborhood(vrp.getNeighborhood());
+		((ServiceInsertionOnRouteLevelCalculator) jobInsertionCalculator).setStates(activityStates2);
 		CalculatorPlusListeners calcPlusListener = new CalculatorPlusListeners(jobInsertionCalculator);
 		return calcPlusListener;
 	}
 
-	private JobInsertionCalculator createFinalInsertion(VehicleFleetManager fleetManager, JobInsertionCalculator baseCalc, StateManager activityStates2){
+	private JobInsertionCostsCalculator createFinalInsertion(VehicleFleetManager fleetManager, JobInsertionCostsCalculator baseCalc, StateGetter activityStates2){
-		return new CalculatesVehTypeDepServiceInsertion(fleetManager, baseCalc);
+		return new VehicleTypeDependentJobInsertionCalculator(fleetManager, baseCalc);
 	}
 
 	public void setConstraintManager(ConstraintManager constraintManager) {

jsprit-core/src/main/java/algorithms/ConfigureFixCostCalculator.java

@@ -37,11 +37,11 @@ final class ConfigureFixCostCalculator implements InsertionStartsListener, JobIn
 	
 	VehicleRoutingProblem vrp;
 	
-	CalculatesServiceInsertionConsideringFixCost calcConsideringFix;
+	JobInsertionConsideringFixCostsCalculator calcConsideringFix;
 	
 	private int nuOfJobsToRecreate;
 
-	public ConfigureFixCostCalculator(VehicleRoutingProblem vrp, CalculatesServiceInsertionConsideringFixCost calcConsideringFix) {
+	public ConfigureFixCostCalculator(VehicleRoutingProblem vrp, JobInsertionConsideringFixCostsCalculator calcConsideringFix) {
 		super();
 		this.vrp = vrp;
 		this.calcConsideringFix = calcConsideringFix;

jsprit-core/src/main/java/algorithms/ConstraintManager.java

@@ -0,0 +1,29 @@
+package algorithms;
+
+import basics.route.TourActivity;
+
+class ConstraintManager implements HardActivityLevelConstraint, HardRouteLevelConstraint{
+
+	private HardActivityLevelConstraintManager actLevelConstraintManager = new HardActivityLevelConstraintManager();
+	
+	private HardRouteLevelConstraintManager routeLevelConstraintManager = new HardRouteLevelConstraintManager();
+	
+	public void addConstraint(HardActivityLevelConstraint actLevelConstraint){
+		actLevelConstraintManager.addConstraint(actLevelConstraint);
+	}
+	
+	public void addConstraint(HardRouteLevelConstraint routeLevelConstraint){
+		routeLevelConstraintManager.addConstraint(routeLevelConstraint);
+	}
+	
+	@Override
+	public boolean fulfilled(InsertionContext insertionContext) {
+		return routeLevelConstraintManager.fulfilled(insertionContext);
+	}
+
+	@Override
+	public ConstraintsStatus fulfilled(InsertionContext iFacts, TourActivity prevAct,TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
+		return actLevelConstraintManager.fulfilled(iFacts, prevAct, newAct, nextAct, prevActDepTime);
+	}
+	
+}

jsprit-core/src/main/java/algorithms/EuclideanServiceDistance.java

@@ -27,7 +27,7 @@ class EuclideanServiceDistance implements JobDistance {
 	}
 
 	@Override
-	public double calculateDistance(Job i, Job j) {
+	public double getDistance(Job i, Job j) {
 		double avgCost = 0.0;
 		if (i instanceof Service && j instanceof Service) {
 			if (i.equals(j)) {

jsprit-core/src/main/java/algorithms/FindCheaperVehicleAlgo.java

@@ -24,6 +24,7 @@ import org.apache.log4j.Logger;
 import basics.route.TourActivities;
 import basics.route.TourActivity;
 import basics.route.Vehicle;
+import basics.route.VehicleFleetManager;
 import basics.route.VehicleImpl.NoVehicle;
 import basics.route.VehicleRoute;
 
@@ -41,13 +42,13 @@ final class FindCheaperVehicleAlgo {
 	
 	private double weightFixCosts = 1.0;
 	
-	private StateManager states;
+	private StateGetter states;
 	
 	public void setWeightFixCosts(double weightFixCosts) {
 		this.weightFixCosts = weightFixCosts;
 	}
 	
-	public void setStates(StateManager states) {
+	public void setStates(StateGetter states) {
 		this.states = states;
 	}
 
@@ -79,11 +80,11 @@ final class FindCheaperVehicleAlgo {
 			if(vehicle.getType().getTypeId().equals(vehicleRoute.getVehicle().getType().getTypeId())){
 				continue;
 			}
-			if(states.getRouteState(vehicleRoute,StateTypes.LOAD).toDouble() <= vehicle.getCapacity()){
+			if(states.getRouteState(vehicleRoute,StateFactory.LOAD).toDouble() <= vehicle.getCapacity()){
 				double fixCostSaving = vehicleRoute.getVehicle().getType().getVehicleCostParams().fix - vehicle.getType().getVehicleCostParams().fix;
 				double departureTime = vehicleRoute.getStart().getEndTime();
 				double newCost = auxilliaryCostCalculator.costOfPath(path, departureTime, vehicleRoute.getDriver(), vehicle);
-				double varCostSaving = states.getRouteState(vehicleRoute, StateTypes.COSTS).toDouble() - newCost;
+				double varCostSaving = states.getRouteState(vehicleRoute, StateFactory.COSTS).toDouble() - newCost;
 				double totalCostSaving = varCostSaving + weightFixCosts*fixCostSaving;
 				if(totalCostSaving > bestSaving){
 					bestSaving = totalCostSaving;

jsprit-core/src/main/java/algorithms/Gendreau.java

@@ -28,14 +28,15 @@ import java.util.Set;
 import org.apache.log4j.Logger;
 
 import util.RandomNumberGeneration;
-import algorithms.RuinStrategy.RuinListener;
 import basics.Job;
 import basics.VehicleRoutingProblem;
 import basics.VehicleRoutingProblemSolution;
 import basics.algo.InsertionListener;
+import basics.algo.RuinListener;
 import basics.algo.SearchStrategyModule;
 import basics.algo.SearchStrategyModuleListener;
 import basics.route.TourActivity;
+import basics.route.VehicleFleetManager;
 import basics.route.TourActivity.JobActivity;
 import basics.route.VehicleRoute;
 

jsprit-core/src/main/java/algorithms/HardActivityLevelConstraint.java

@@ -0,0 +1,15 @@
+package algorithms;
+
+import basics.route.TourActivity;
+
+public interface HardActivityLevelConstraint {
+	
+	static enum ConstraintsStatus {
+		
+		NOT_FULFILLED_BREAK, NOT_FULFILLED, FULFILLED;
+
+	}
+	
+	public ConstraintsStatus fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime);
+
+}

jsprit-core/src/main/java/algorithms/HardActivityLevelConstraintManager.java

@@ -0,0 +1,27 @@
+package algorithms;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import basics.route.TourActivity;
+
+class HardActivityLevelConstraintManager implements HardActivityLevelConstraint {
+
+	private Collection<HardActivityLevelConstraint> hardConstraints = new ArrayList<HardActivityLevelConstraint>();
+	
+	public void addConstraint(HardActivityLevelConstraint constraint){
+		hardConstraints.add(constraint);
+	}
+	
+	@Override
+	public ConstraintsStatus fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
+		for(HardActivityLevelConstraint constraint : hardConstraints){
+			ConstraintsStatus status = constraint.fulfilled(iFacts, prevAct, newAct, nextAct, prevActDepTime);
+			if(status.equals(ConstraintsStatus.NOT_FULFILLED_BREAK) || status.equals(ConstraintsStatus.NOT_FULFILLED)){
+				return status;
+			}
+		}
+		return ConstraintsStatus.FULFILLED;
+	}
+	
+}

jsprit-core/src/main/java/algorithms/HardConstraints.java

@@ -1,382 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import java.util.ArrayList;
-import java.util.Collection;
-
-import org.apache.log4j.Logger;
-
-import basics.Delivery;
-import basics.Pickup;
-import basics.Service;
-import basics.costs.VehicleRoutingTransportCosts;
-import basics.route.DeliverService;
-import basics.route.DeliverShipment;
-import basics.route.DeliveryActivity;
-import basics.route.PickupActivity;
-import basics.route.PickupService;
-import basics.route.PickupShipment;
-import basics.route.ServiceActivity;
-import basics.route.Start;
-import basics.route.TourActivity;
-
-/**
- * collection of hard constrainters bot at activity and at route level.
- * 
- * <p>HardPickupAndDeliveryLoadConstraint requires LOAD_AT_DEPOT and LOAD (i.e. load at end) at route-level
- * 
- * <p>HardTimeWindowConstraint requires LATEST_OPERATION_START_TIME
- * 
- * <p>HardPickupAndDeliveryConstraint requires LOAD_AT_DEPOT and LOAD at route-level and FUTURE_PICKS and PAST_DELIVIERS on activity-level
- * 
- * <p>HardPickupAndDeliveryBackhaulConstraint requires LOAD_AT_DEPOT and LOAD at route-level and FUTURE_PICKS and PAST_DELIVIERS on activity-level
- * 
- * @author stefan
- *
- */
-class HardConstraints {
-	
-	interface HardRouteLevelConstraint {
-
-		public boolean fulfilled(InsertionContext insertionContext);
-		
-	}
-	
-	interface HardActivityLevelConstraint {
-		
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime);
-
-	}
-	
-	static class HardRouteLevelConstraintManager implements HardRouteLevelConstraint {
-
-		private Collection<HardRouteLevelConstraint> hardConstraints = new ArrayList<HardRouteLevelConstraint>();
-		
-		public void addConstraint(HardRouteLevelConstraint constraint){
-			hardConstraints.add(constraint);
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext insertionContext) {
-			for(HardRouteLevelConstraint constraint : hardConstraints){
-				if(!constraint.fulfilled(insertionContext)){
-					return false;
-				}
-			}
-			return true;
-		}
-		
-	}
-	
-	static class ConstraintManager implements HardActivityLevelConstraint, HardRouteLevelConstraint{
-
-		private HardActivityLevelConstraintManager actLevelConstraintManager = new HardActivityLevelConstraintManager();
-		
-		private HardRouteLevelConstraintManager routeLevelConstraintManager = new HardRouteLevelConstraintManager();
-		
-		public void addConstraint(HardActivityLevelConstraint actLevelConstraint){
-			actLevelConstraintManager.addConstraint(actLevelConstraint);
-		}
-		
-		public void addConstraint(HardRouteLevelConstraint routeLevelConstraint){
-			routeLevelConstraintManager.addConstraint(routeLevelConstraint);
-		}
-		
-		@Override
-		public boolean fulfilled(InsertionContext insertionContext) {
-			return routeLevelConstraintManager.fulfilled(insertionContext);
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct,TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
-			return actLevelConstraintManager.fulfilled(iFacts, prevAct, newAct, nextAct, prevActDepTime);
-		}
-		
-	}
-	
-	static class HardActivityLevelConstraintManager implements HardActivityLevelConstraint {
-
-		private Collection<HardActivityLevelConstraint> hardConstraints = new ArrayList<HardActivityLevelConstraint>();
-		
-		public void addConstraint(HardActivityLevelConstraint constraint){
-			hardConstraints.add(constraint);
-		}
-		
-		@Override
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
-			for(HardActivityLevelConstraint constraint : hardConstraints){
-				if(!constraint.fulfilled(iFacts, prevAct, newAct, nextAct, prevActDepTime)){
-					return false;
-				}
-			}
-			return true;
-		}
-		
-	}
-	
-	static class HardLoadConstraint implements HardRouteLevelConstraint{
-
-		private StateManager states;
-		
-		public HardLoadConstraint(StateManager states) {
-			super();
-			this.states = states;
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext insertionContext) {
-			int currentLoad = (int) states.getRouteState(insertionContext.getRoute(), StateTypes.LOAD).toDouble();
-			Service service = (Service) insertionContext.getJob();
-			if(currentLoad + service.getCapacityDemand() > insertionContext.getNewVehicle().getCapacity()){
-				return false;
-			}
-			return true;
-		}
-	}
-	
-	/**
-	 * lsjdfjsdlfjsa
-	 * 
-	 * @author stefan
-	 *
-	 */
-	static class HardPickupAndDeliveryLoadConstraint implements HardRouteLevelConstraint {
-
-		private StateManager stateManager;
-		
-		public HardPickupAndDeliveryLoadConstraint(StateManager stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext insertionContext) {
-			if(insertionContext.getJob() instanceof Delivery){
-				int loadAtDepot = (int) stateManager.getRouteState(insertionContext.getRoute(), StateTypes.LOAD_AT_DEPOT).toDouble();
-				if(loadAtDepot + insertionContext.getJob().getCapacityDemand() > insertionContext.getNewVehicle().getCapacity()){
-					return false;
-				}
-			}
-			else if(insertionContext.getJob() instanceof Pickup || insertionContext.getJob() instanceof Service){
-				int loadAtEnd = (int) stateManager.getRouteState(insertionContext.getRoute(), StateTypes.LOAD).toDouble();
-				if(loadAtEnd + insertionContext.getJob().getCapacityDemand() > insertionContext.getNewVehicle().getCapacity()){
-					return false;
-				}
-			}
-			return true;
-		}
-		
-	}
-	
-	/**
-	 * ljsljslfjs
-	 * @author stefan
-	 *
-	 */
-	public static class HardTimeWindowActivityLevelConstraint implements HardActivityLevelConstraint {
-
-		private static Logger log = Logger.getLogger(HardTimeWindowActivityLevelConstraint.class);
-		
-		private StateManager states;
-		
-		private VehicleRoutingTransportCosts routingCosts;
-		
-		public HardTimeWindowActivityLevelConstraint(StateManager states, VehicleRoutingTransportCosts routingCosts) {
-			super();
-			this.states = states;
-			this.routingCosts = routingCosts;
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
-//			log.info("check insertion of " + newAct + " between " + prevAct + " and " + nextAct + ". prevActDepTime=" + prevActDepTime);
-			double arrTimeAtNewAct = prevActDepTime + routingCosts.getTransportTime(prevAct.getLocationId(), newAct.getLocationId(), prevActDepTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
-			double latestArrTimeAtNewAct = states.getActivityState(newAct, StateTypes.LATEST_OPERATION_START_TIME).toDouble();
-			if(arrTimeAtNewAct > latestArrTimeAtNewAct){
-				return false;
-			}
-//			log.info(newAct + " arrTime=" + arrTimeAtNewAct);
-			double endTimeAtNewAct = CalcUtils.getActivityEndTime(arrTimeAtNewAct, newAct);
-			double arrTimeAtNextAct = endTimeAtNewAct + routingCosts.getTransportTime(newAct.getLocationId(), nextAct.getLocationId(), endTimeAtNewAct, iFacts.getNewDriver(), iFacts.getNewVehicle());
-			double latestArrTimeAtNextAct = states.getActivityState(nextAct, StateTypes.LATEST_OPERATION_START_TIME).toDouble();
-			if(arrTimeAtNextAct > latestArrTimeAtNextAct){
-				return false;
-			}
-//			log.info(nextAct + " arrTime=" + arrTimeAtNextAct);
-			return true;
-		}
-	}
-	
-	static class HardPickupAndDeliveryActivityLevelConstraint implements HardActivityLevelConstraint {
-		
-		private StateManager stateManager;
-		
-		private boolean backhaul = false;
-		
-		public HardPickupAndDeliveryActivityLevelConstraint(StateManager stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-		
-		public HardPickupAndDeliveryActivityLevelConstraint(StateManager stateManager, boolean backhaul) {
-			super();
-			this.stateManager = stateManager;
-			this.backhaul = backhaul;
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
-			if(!(newAct instanceof PickupService) && !(newAct instanceof DeliverService)){
-				return true;
-			}
-			if(backhaul){
-				if(newAct instanceof PickupService && nextAct instanceof DeliverService){ return false; }
-				if(newAct instanceof DeliverService && prevAct instanceof PickupService){ return false; }
-			}
-			int loadAtPrevAct;
-			int futurePicks;
-			int pastDeliveries;
-			if(prevAct instanceof Start){
-				loadAtPrevAct = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD_AT_DEPOT).toDouble();
-				futurePicks = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD).toDouble();
-				pastDeliveries = 0;
-			}
-			else{
-				loadAtPrevAct = (int) stateManager.getActivityState(prevAct, StateTypes.LOAD).toDouble();
-				futurePicks = (int) stateManager.getActivityState(prevAct, StateTypes.FUTURE_PICKS).toDouble();
-				pastDeliveries = (int) stateManager.getActivityState(prevAct, StateTypes.PAST_DELIVERIES).toDouble();
-			}
-			if(newAct instanceof PickupService){
-				if(loadAtPrevAct + newAct.getCapacityDemand() + futurePicks > iFacts.getNewVehicle().getCapacity()){
-					return false;
-				}
-			}
-			if(newAct instanceof DeliverService){
-				if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) + pastDeliveries > iFacts.getNewVehicle().getCapacity()){
-					return false;
-				}
-				
-			}
-			return true;
-		}
-			
-	}
-
-	static class HardPickupAndDeliveryShipmentActivityLevelConstraint implements HardActivityLevelConstraint {
-		
-		private StateManager stateManager;
-		
-		private boolean backhaul = false;
-		
-		public HardPickupAndDeliveryShipmentActivityLevelConstraint(StateManager stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		public HardPickupAndDeliveryShipmentActivityLevelConstraint(StateManager stateManager, boolean backhaul) {
-			super();
-			this.stateManager = stateManager;
-			this.backhaul = backhaul;
-		}
-		
-		@Override
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
-			if(!(newAct instanceof PickupShipment) && !(newAct instanceof DeliverShipment)){
-				return true;
-			}
-			if(backhaul){
-//				if(newAct instanceof PickupShipment && nextAct instanceof DeliverShipment){ return false; }
-				if(newAct instanceof DeliverShipment && prevAct instanceof PickupShipment){ return false; }
-			}
-			int loadAtPrevAct;
-//			int futurePicks;
-//			int pastDeliveries;
-			if(prevAct instanceof Start){
-				loadAtPrevAct = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD_AT_DEPOT).toDouble();
-//				futurePicks = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD).toDouble();
-//				pastDeliveries = 0;
-			}
-			else{
-				loadAtPrevAct = (int) stateManager.getActivityState(prevAct, StateTypes.LOAD).toDouble();
-//				futurePicks = (int) stateManager.getActivityState(prevAct, StateTypes.FUTURE_PICKS).toDouble();
-//				pastDeliveries = (int) stateManager.getActivityState(prevAct, StateTypes.PAST_DELIVERIES).toDouble();
-			}
-			if(newAct instanceof PickupShipment){
-				if(loadAtPrevAct + newAct.getCapacityDemand() > iFacts.getNewVehicle().getCapacity()){
-					return false;
-				}
-			}
-			if(newAct instanceof DeliverShipment){
-				if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) > iFacts.getNewVehicle().getCapacity()){
-					return false;
-				}
-				
-			}
-			return true;
-		}
-			
-	}
-
-	
-	static class HardPickupAndDeliveryBackhaulActivityLevelConstraint implements HardActivityLevelConstraint {
-		
-		private StateManager stateManager;
-		
-		public HardPickupAndDeliveryBackhaulActivityLevelConstraint(StateManager stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
-			if(newAct instanceof PickupService && nextAct instanceof DeliverService){ return false; }
-//			if(newAct instanceof ServiceActivity && nextAct instanceof DeliveryActivity){ return false; }
-			if(newAct instanceof DeliverService && prevAct instanceof PickupService){ return false; }
-//			if(newAct instanceof DeliveryActivity && prevAct instanceof ServiceActivity){ return false; }
-			int loadAtPrevAct;
-			int futurePicks;
-			int pastDeliveries;
-			if(prevAct instanceof Start){
-				loadAtPrevAct = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD_AT_DEPOT).toDouble();
-				futurePicks = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD).toDouble();
-				pastDeliveries = 0;
-			}
-			else{
-				loadAtPrevAct = (int) stateManager.getActivityState(prevAct, StateTypes.LOAD).toDouble();
-				futurePicks = (int) stateManager.getActivityState(prevAct, StateTypes.FUTURE_PICKS).toDouble();
-				pastDeliveries = (int) stateManager.getActivityState(prevAct, StateTypes.PAST_DELIVERIES).toDouble();
-			}
-			if(newAct instanceof PickupActivity || newAct instanceof ServiceActivity){
-				if(loadAtPrevAct + newAct.getCapacityDemand() + futurePicks > iFacts.getNewVehicle().getCapacity()){
-					return false;
-				}
-			}
-			if(newAct instanceof DeliveryActivity){
-				if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) + pastDeliveries > iFacts.getNewVehicle().getCapacity()){
-					return false;
-				}
-				
-			}
-			return true;
-		}
-			
-	}
-	
-	
-
-}

jsprit-core/src/main/java/algorithms/HardLoadConstraint.java

@@ -0,0 +1,23 @@
+package algorithms;
+
+import basics.Service;
+
+class HardLoadConstraint implements HardRouteLevelConstraint{
+
+	private StateGetter states;
+	
+	public HardLoadConstraint(StateGetter states) {
+		super();
+		this.states = states;
+	}
+
+	@Override
+	public boolean fulfilled(InsertionContext insertionContext) {
+		int currentLoad = (int) states.getRouteState(insertionContext.getRoute(), StateFactory.LOAD).toDouble();
+		Service service = (Service) insertionContext.getJob();
+		if(currentLoad + service.getCapacityDemand() > insertionContext.getNewVehicle().getCapacity()){
+			return false;
+		}
+		return true;
+	}
+}

jsprit-core/src/main/java/algorithms/HardPickupAndDeliveryActivityLevelConstraint.java

@@ -0,0 +1,47 @@
+package algorithms;
+
+import basics.route.DeliveryActivity;
+import basics.route.PickupActivity;
+import basics.route.ServiceActivity;
+import basics.route.Start;
+import basics.route.TourActivity;
+
+class HardPickupAndDeliveryActivityLevelConstraint implements HardActivityLevelConstraint {
+	
+	private StateGetter stateManager;
+	
+	public HardPickupAndDeliveryActivityLevelConstraint(StateGetter stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	@Override
+	public ConstraintsStatus fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
+		int loadAtPrevAct;
+		int futurePicks;
+		int pastDeliveries;
+		if(prevAct instanceof Start){
+			loadAtPrevAct = (int)stateManager.getRouteState(iFacts.getRoute(), StateFactory.LOAD_AT_BEGINNING).toDouble();
+			futurePicks = (int)stateManager.getRouteState(iFacts.getRoute(), StateFactory.LOAD_AT_END).toDouble();
+			pastDeliveries = 0;
+		}
+		else{
+			loadAtPrevAct = (int) stateManager.getActivityState(prevAct, StateFactory.LOAD).toDouble();
+			futurePicks = (int) stateManager.getActivityState(prevAct, StateFactory.FUTURE_PICKS).toDouble();
+			pastDeliveries = (int) stateManager.getActivityState(prevAct, StateFactory.PAST_DELIVERIES).toDouble();
+		}
+		if(newAct instanceof PickupActivity || newAct instanceof ServiceActivity){
+			if(loadAtPrevAct + newAct.getCapacityDemand() + futurePicks > iFacts.getNewVehicle().getCapacity()){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+		}
+		if(newAct instanceof DeliveryActivity){
+			if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) + pastDeliveries > iFacts.getNewVehicle().getCapacity()){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+			
+		}
+		return ConstraintsStatus.FULFILLED;
+	}
+		
+}

jsprit-core/src/main/java/algorithms/HardPickupAndDeliveryBackhaulActivityLevelConstraint.java

@@ -0,0 +1,51 @@
+package algorithms;
+
+import basics.route.DeliveryActivity;
+import basics.route.PickupActivity;
+import basics.route.ServiceActivity;
+import basics.route.Start;
+import basics.route.TourActivity;
+
+class HardPickupAndDeliveryBackhaulActivityLevelConstraint implements HardActivityLevelConstraint {
+	
+	private StateGetter stateManager;
+	
+	public HardPickupAndDeliveryBackhaulActivityLevelConstraint(StateGetter stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	@Override
+	public ConstraintsStatus fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
+		if(newAct instanceof PickupActivity && nextAct instanceof DeliveryActivity){ return ConstraintsStatus.NOT_FULFILLED; }
+		if(newAct instanceof ServiceActivity && nextAct instanceof DeliveryActivity){ return ConstraintsStatus.NOT_FULFILLED; }
+		if(newAct instanceof DeliveryActivity && prevAct instanceof PickupActivity){ return ConstraintsStatus.NOT_FULFILLED; }
+		if(newAct instanceof DeliveryActivity && prevAct instanceof ServiceActivity){ return ConstraintsStatus.NOT_FULFILLED; }
+		int loadAtPrevAct;
+		int futurePicks;
+		int pastDeliveries;
+		if(prevAct instanceof Start){
+			loadAtPrevAct = (int)stateManager.getRouteState(iFacts.getRoute(), StateFactory.LOAD_AT_BEGINNING).toDouble();
+			futurePicks = (int)stateManager.getRouteState(iFacts.getRoute(), StateFactory.LOAD_AT_END).toDouble();
+			pastDeliveries = 0;
+		}
+		else{
+			loadAtPrevAct = (int) stateManager.getActivityState(prevAct, StateFactory.LOAD).toDouble();
+			futurePicks = (int) stateManager.getActivityState(prevAct, StateFactory.FUTURE_PICKS).toDouble();
+			pastDeliveries = (int) stateManager.getActivityState(prevAct, StateFactory.PAST_DELIVERIES).toDouble();
+		}
+		if(newAct instanceof PickupActivity || newAct instanceof ServiceActivity){
+			if(loadAtPrevAct + newAct.getCapacityDemand() + futurePicks > iFacts.getNewVehicle().getCapacity()){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+		}
+		if(newAct instanceof DeliveryActivity){
+			if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) + pastDeliveries > iFacts.getNewVehicle().getCapacity()){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+			
+		}
+		return ConstraintsStatus.FULFILLED;
+	}
+		
+}

jsprit-core/src/main/java/algorithms/HardPickupAndDeliveryLoadRouteLevelConstraint.java

@@ -0,0 +1,39 @@
+package algorithms;
+
+import basics.Delivery;
+import basics.Pickup;
+import basics.Service;
+
+/**
+ * lsjdfjsdlfjsa
+ * 
+ * @author stefan
+ *
+ */
+class HardPickupAndDeliveryLoadRouteLevelConstraint implements HardRouteLevelConstraint {
+
+	private StateGetter stateManager;
+	
+	public HardPickupAndDeliveryLoadRouteLevelConstraint(StateGetter stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	@Override
+	public boolean fulfilled(InsertionContext insertionContext) {
+		if(insertionContext.getJob() instanceof Delivery){
+			int loadAtDepot = (int) stateManager.getRouteState(insertionContext.getRoute(), StateFactory.LOAD_AT_BEGINNING).toDouble();
+			if(loadAtDepot + insertionContext.getJob().getCapacityDemand() > insertionContext.getNewVehicle().getCapacity()){
+				return false;
+			}
+		}
+		else if(insertionContext.getJob() instanceof Pickup || insertionContext.getJob() instanceof Service){
+			int loadAtEnd = (int) stateManager.getRouteState(insertionContext.getRoute(), StateFactory.LOAD_AT_END).toDouble();
+			if(loadAtEnd + insertionContext.getJob().getCapacityDemand() > insertionContext.getNewVehicle().getCapacity()){
+				return false;
+			}
+		}
+		return true;
+	}
+	
+}

jsprit-core/src/main/java/algorithms/HardRouteLevelConstraint.java

@@ -0,0 +1,8 @@
+package algorithms;
+
+
+public interface HardRouteLevelConstraint {
+
+	public boolean fulfilled(InsertionContext insertionContext);
+	
+}

jsprit-core/src/main/java/algorithms/HardRouteLevelConstraintManager.java

@@ -0,0 +1,25 @@
+package algorithms;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+
+class HardRouteLevelConstraintManager implements HardRouteLevelConstraint {
+
+	private Collection<HardRouteLevelConstraint> hardConstraints = new ArrayList<HardRouteLevelConstraint>();
+	
+	public void addConstraint(HardRouteLevelConstraint constraint){
+		hardConstraints.add(constraint);
+	}
+
+	@Override
+	public boolean fulfilled(InsertionContext insertionContext) {
+		for(HardRouteLevelConstraint constraint : hardConstraints){
+			if(!constraint.fulfilled(insertionContext)){
+				return false;
+			}
+		}
+		return true;
+	}
+	
+}

jsprit-core/src/main/java/algorithms/HardTimeWindowActivityLevelConstraint.java

@@ -0,0 +1,51 @@
+package algorithms;
+
+import org.apache.log4j.Logger;
+
+import basics.costs.VehicleRoutingTransportCosts;
+import basics.route.TourActivity;
+
+/**
+	 * ljsljslfjs
+	 * @author stefan
+	 *
+	 */
+	class HardTimeWindowActivityLevelConstraint implements HardActivityLevelConstraint {
+
+		private static Logger log = Logger.getLogger(HardTimeWindowActivityLevelConstraint.class);
+		
+		private StateGetter states;
+		
+		private VehicleRoutingTransportCosts routingCosts;
+		
+		public HardTimeWindowActivityLevelConstraint(StateGetter states, VehicleRoutingTransportCosts routingCosts) {
+			super();
+			this.states = states;
+			this.routingCosts = routingCosts;
+		}
+
+		@Override
+		public ConstraintsStatus fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
+			if(newAct.getTheoreticalLatestOperationStartTime() < prevAct.getTheoreticalEarliestOperationStartTime()){
+				return ConstraintsStatus.NOT_FULFILLED_BREAK;
+			}
+			if(newAct.getTheoreticalEarliestOperationStartTime() > nextAct.getTheoreticalLatestOperationStartTime()){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+			//			log.info("check insertion of " + newAct + " between " + prevAct + " and " + nextAct + ". prevActDepTime=" + prevActDepTime);
+			double arrTimeAtNewAct = prevActDepTime + routingCosts.getTransportTime(prevAct.getLocationId(), newAct.getLocationId(), prevActDepTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
+			double latestArrTimeAtNewAct = states.getActivityState(newAct, StateFactory.LATEST_OPERATION_START_TIME).toDouble();
+			
+			if(arrTimeAtNewAct > latestArrTimeAtNewAct){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+//			log.info(newAct + " arrTime=" + arrTimeAtNewAct);
+			double endTimeAtNewAct = CalculationUtils.getActivityEndTime(arrTimeAtNewAct, newAct);
+			double arrTimeAtNextAct = endTimeAtNewAct + routingCosts.getTransportTime(newAct.getLocationId(), nextAct.getLocationId(), endTimeAtNewAct, iFacts.getNewDriver(), iFacts.getNewVehicle());
+			double latestArrTimeAtNextAct = states.getActivityState(nextAct, StateFactory.LATEST_OPERATION_START_TIME).toDouble();
+			if(arrTimeAtNextAct > latestArrTimeAtNextAct){
+				return ConstraintsStatus.NOT_FULFILLED;
+			}
+			return ConstraintsStatus.FULFILLED;
+		}
+	}

jsprit-core/src/main/java/algorithms/InitialSolutionFactory.java

@@ -21,8 +21,8 @@ import basics.VehicleRoutingProblemSolution;
 
 
 
-interface InitialSolutionFactory {
+public interface InitialSolutionFactory {
 
-	public VehicleRoutingProblemSolution createInitialSolution(VehicleRoutingProblem vrp);
+	public VehicleRoutingProblemSolution createSolution(VehicleRoutingProblem vrp);
 
 }

jsprit-core/src/main/java/algorithms/InsertionContext.java

@@ -21,7 +21,7 @@ import basics.route.Driver;
 import basics.route.Vehicle;
 import basics.route.VehicleRoute;
 
-class InsertionContext {
+public class InsertionContext {
 	
 	private VehicleRoute route;
 	private Job job;

jsprit-core/src/main/java/algorithms/InsertionData.java

@@ -19,9 +19,14 @@ package algorithms;
 import basics.route.Driver;
 import basics.route.Vehicle;
 
-
+/**
-
+ * Data object that collects insertion information. It collects insertionCosts, insertionIndeces, vehicle and driver to be employed
-class InsertionData {
+ * and departureTime of vehicle at vehicle's start location (e.g. depot).
+ * 
+ * @author stefan
+ *
+ */
+public class InsertionData {
 	
 	static class NoInsertionFound extends InsertionData{
 		
@@ -33,7 +38,15 @@ class InsertionData {
 	
 	private static InsertionData noInsertion = new NoInsertionFound();
 	
-	public static InsertionData noInsertionFound(){
+	/**
+	 * Returns an instance of InsertionData that represents an EmptyInsertionData (which might indicate
+	 * that no insertion has been found). It is internally instantiated as follows:<br>
+	 * <code>new InsertionData(Double.MAX_VALUE, NO_INDEX, NO_INDEX, null, null);</code><br>
+	 * where NO_INDEX=-1. 
+	 * 
+	 * @return
+	 */
+	public static InsertionData createEmptyInsertionData(){
 		return noInsertion;
 	}
 	
@@ -80,22 +93,47 @@ class InsertionData {
 		return "[iCost="+insertionCost+"][iIndex="+deliveryInsertionIndex+"][depTime="+departureTime+"][vehicle="+selectedVehicle+"][driver="+selectedDriver+"]";
 	}
 	
+	/**
+	 * Returns insertionIndex of deliveryActivity. If no insertionPosition is found, it returns NO_INDEX (=-1). 
+	 * 
+	 * @return
+	 */
 	public int getDeliveryInsertionIndex(){
 		return deliveryInsertionIndex;
 	}
 	
+	/**
+	 * Returns insertionIndex of pickkupActivity. If no insertionPosition is found, it returns NO_INDEX (=-1).
+	 * 
+	 * @return
+	 */
 	public int getPickupInsertionIndex(){
 		return pickupInsertionIndex;
 	}
 	
+	/**
+	 * Returns insertion costs (which might be the additional costs of inserting the corresponding job).
+	 * 
+	 * @return
+	 */
 	public double getInsertionCost() {
 		return insertionCost;
 	}
 
+	/**
+	 * Returns the vehicle to be employed.
+	 * 
+	 * @return
+	 */
 	public Vehicle getSelectedVehicle() {
 		return selectedVehicle;
 	}
 	
+	/**
+	 * Returns the vehicle to be employed.
+	 * 
+	 * @return
+	 */
 	public Driver getSelectedDriver(){
 		return selectedDriver;
 	}

jsprit-core/src/main/java/algorithms/InsertionFactory.java

@@ -23,19 +23,18 @@ import java.util.concurrent.ExecutorService;
 import org.apache.commons.configuration.HierarchicalConfiguration;
 import org.apache.log4j.Logger;
 
-import algorithms.HardConstraints.ConstraintManager;
 import basics.VehicleRoutingProblem;
 import basics.algo.InsertionListener;
 import basics.algo.VehicleRoutingAlgorithmListeners.PrioritizedVRAListener;
+import basics.route.VehicleFleetManager;
 
 class InsertionFactory {
 	
 	private static Logger log = Logger.getLogger(InsertionFactory.class);
 	
 	public static InsertionStrategy createInsertion(VehicleRoutingProblem vrp, HierarchicalConfiguration config, 
-			VehicleFleetManager vehicleFleetManager, StateManagerImpl routeStates, List<PrioritizedVRAListener> algorithmListeners, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager){
+			VehicleFleetManager vehicleFleetManager, StateManager routeStates, List<PrioritizedVRAListener> algorithmListeners, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager){
-		boolean concurrentInsertion = false;
+
-		if(executorService != null) concurrentInsertion = true;
 		if(config.containsKey("[@name]")){
 			String insertionName = config.getString("[@name]");
 			if(!insertionName.equals("bestInsertion") && !insertionName.equals("regretInsertion")){
@@ -89,26 +88,13 @@ class InsertionFactory {
 				calcBuilder.experimentalTimeScheduler(Double.parseDouble(timeSliceString),Integer.parseInt(neighbors));
 			}
 			
-			JobInsertionCalculator jic = calcBuilder.build();
+			JobInsertionCostsCalculator jic = calcBuilder.build();
 
 	
 			if(insertionName.equals("bestInsertion")){		
 				insertionStrategy = new BestInsertion(jic);
 			}
-//			else if(insertionName.equals("regretInsertion")){
-//				insertionStrategy = RegretInsertion.newInstance(routeAlgorithm);
-//			}
-		
-//			insertionStrategy.addListener(new RemoveEmptyVehicles(vehicleFleetManager));
-//			insertionStrategy.addListener(new ResetAndIniFleetManager(vehicleFleetManager));
-//			insertionStrategy.addListener(new VehicleSwitched(vehicleFleetManager));
-			
-//			insertionStrategy.addListener(new UpdateLoadAtRouteLevel(routeStates));
-			
-//			insertionStrategy.addListener(new UpdateStates(routeStates, vrp.getTransportCosts(), vrp.getActivityCosts()));
 			for(InsertionListener l : insertionListeners) insertionStrategy.addListener(l);
-//			insertionStrategy.addListener(new FindCheaperVehicle(
-//					new FindCheaperVehicleAlgoNew(vehicleFleetManager, tourStateCalculator, auxCalculator)));
 
 			algorithmListeners.addAll(algoListeners);
 			

jsprit-core/src/main/java/algorithms/InsertionInitialSolutionFactory.java

@@ -1,18 +1,14 @@
 /*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
+ * Copyright (c) 2011 Stefan Schroeder.
+ * eMail: stefan.schroeder@kit.edu
  * 
- * This library is free software; you can redistribute it and/or
+ * All rights reserved. This program and the accompanying materials
- * modify it under the terms of the GNU Lesser General Public
+ * are made available under the terms of the GNU Public License v2.0
- * License as published by the Free Software Foundation; either 
+ * which accompanies this distribution, and is available at
- * version 3.0 of the License, or (at your option) any later version.
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
  * 
- * This library is distributed in the hope that it will be useful,
+ * Contributors:
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     Stefan Schroeder - initial API and implementation
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
 /* *********************************************************************** *
  * project: org.matsim.*
@@ -45,48 +41,34 @@ import basics.Job;
 import basics.VehicleRoutingProblem;
 import basics.VehicleRoutingProblemSolution;
 import basics.algo.SolutionCostCalculator;
-import basics.route.DriverImpl;
-import basics.route.TourActivities;
-import basics.route.Vehicle;
 import basics.route.VehicleRoute;
 
 
 
-final class CreateInitialSolution implements InitialSolutionFactory {
+public final class InsertionInitialSolutionFactory implements InitialSolutionFactory {
 
-	private static final Logger logger = Logger.getLogger(CreateInitialSolution.class);
+	private static final Logger logger = Logger.getLogger(InsertionInitialSolutionFactory.class);
 
 	private final InsertionStrategy insertion;
 
-	private SolutionCostCalculator solutionCostCalculator;
+	private SolutionCostCalculator solutionCostsCalculator;
 
-	private boolean generateAsMuchAsRoutesAsVehiclesExist = false;
+	public InsertionInitialSolutionFactory(InsertionStrategy insertionStrategy, SolutionCostCalculator solutionCostCalculator) {
-	
-	public void setGenerateAsMuchAsRoutesAsVehiclesExist(boolean generateAsMuchAsRoutesAsVehiclesExist) {
-		this.generateAsMuchAsRoutesAsVehiclesExist = generateAsMuchAsRoutesAsVehiclesExist;
-	}
-
-	public CreateInitialSolution(InsertionStrategy insertionStrategy, SolutionCostCalculator solutionCostCalculator) {
 		super();
 		this.insertion = insertionStrategy;
-		this.solutionCostCalculator = solutionCostCalculator;
+		this.solutionCostsCalculator = solutionCostCalculator;
 	}
 
 	@Override
-	public VehicleRoutingProblemSolution createInitialSolution(final VehicleRoutingProblem vrp) {
+	public VehicleRoutingProblemSolution createSolution(final VehicleRoutingProblem vrp) {
 		logger.info("create initial solution.");
 		List<VehicleRoute> vehicleRoutes = new ArrayList<VehicleRoute>();
-		if(generateAsMuchAsRoutesAsVehiclesExist){
-			for(Vehicle vehicle : vrp.getVehicles()){
-				vehicleRoutes.add(VehicleRoute.newInstance(TourActivities.emptyTour(), DriverImpl.noDriver(), vehicle));
-			}
-		}
 		insertion.insertJobs(vehicleRoutes, getUnassignedJobs(vrp));
-//		double totalCost = getTotalCost(vehicleRoutes);
+		VehicleRoutingProblemSolution solution = new VehicleRoutingProblemSolution(vehicleRoutes, Double.MAX_VALUE);
+		double costs = solutionCostsCalculator.getCosts(solution);
+		solution.setCost(costs);
 		logger.info("creation done");
-		VehicleRoutingProblemSolution vehicleRoutingProblemSolution = new VehicleRoutingProblemSolution(vehicleRoutes, 0.0);
+		return solution;
-		solutionCostCalculator.calculateCosts(vehicleRoutingProblemSolution);
-		return vehicleRoutingProblemSolution;
 	}
 
 	private List<Job> getUnassignedJobs(VehicleRoutingProblem vrp) {

jsprit-core/src/main/java/algorithms/InsertionStrategy.java

@@ -31,33 +31,7 @@ import basics.route.VehicleRoute;
  * 
  */
 
-interface InsertionStrategy {
+public interface InsertionStrategy {
-
-	class Insertion {
-		
-		private final VehicleRoute route;
-		
-		private final InsertionData insertionData;
-
-		public Insertion(VehicleRoute vehicleRoute, InsertionData insertionData) {
-			super();
-			this.route = vehicleRoute;
-			this.insertionData = insertionData;
-		}
-
-		public VehicleRoute getRoute() {
-			return route;
-		}
-		
-		public InsertionData getInsertionData() {
-			return insertionData;
-		}
-		
-	}
-
-	
-	
-
 
 	/**
 	 * Assigns the unassigned jobs to service-providers

jsprit-core/src/main/java/algorithms/InsertionStrategyBuilder.java

@@ -0,0 +1,7 @@
+package algorithms;
+
+public interface InsertionStrategyBuilder {
+	
+	public InsertionStrategy build();
+
+}

jsprit-core/src/main/java/algorithms/IterateRouteBackwardInTime.java

@@ -1,82 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import java.util.Iterator;
-
-import org.apache.log4j.Logger;
-
-import algorithms.BackwardInTimeListeners.BackwardInTimeListener;
-import basics.costs.BackwardTransportTime;
-import basics.route.TourActivity;
-import basics.route.VehicleRoute;
-
-
-/**
- * 
- * @author stefan schroeder
- *
- */
-
-class IterateRouteBackwardInTime implements VehicleRouteUpdater{
-	
-	private static Logger log = Logger.getLogger(IterateRouteBackwardInTime.class);
-
-	private BackwardTransportTime transportTime;
-	
-	private BackwardInTimeListeners listeners;
-	
-	public IterateRouteBackwardInTime(BackwardTransportTime transportTime) {
-		super();
-		this.transportTime = transportTime;
-		listeners = new BackwardInTimeListeners();
-	}
-
-	/*
-	 * 
-	 */
-	public void iterate(VehicleRoute vehicleRoute) {
-		if(listeners.isEmpty()) return;
-		if(vehicleRoute.isEmpty()) return;
-		listeners.start(vehicleRoute, vehicleRoute.getEnd(), vehicleRoute.getEnd().getTheoreticalLatestOperationStartTime());
-		
-		Iterator<TourActivity> reverseActIter = vehicleRoute.getTourActivities().reverseActivityIterator();
-		TourActivity prevAct;
-		prevAct = vehicleRoute.getEnd();
-		double latestArrivalTimeAtPrevAct = prevAct.getTheoreticalLatestOperationStartTime();
-		
-		while(reverseActIter.hasNext()){
-			TourActivity currAct = reverseActIter.next();	
-			double latestDepTimeAtCurrAct = latestArrivalTimeAtPrevAct - transportTime.getBackwardTransportTime(currAct.getLocationId(), prevAct.getLocationId(), latestArrivalTimeAtPrevAct, vehicleRoute.getDriver(),vehicleRoute.getVehicle());
-			double potentialLatestArrivalTimeAtCurrAct = latestDepTimeAtCurrAct - currAct.getOperationTime();
-			double latestArrivalTime = Math.min(currAct.getTheoreticalLatestOperationStartTime(), potentialLatestArrivalTimeAtCurrAct);
-			
-			listeners.prevActivity(currAct, latestDepTimeAtCurrAct, latestArrivalTime);
-			
-			prevAct = currAct;
-			latestArrivalTimeAtPrevAct = latestArrivalTime;
-		}
-		
-		TourActivity currAct = vehicleRoute.getStart();
-		double latestDepTimeAtCurrAct = latestArrivalTimeAtPrevAct - transportTime.getBackwardTransportTime(currAct.getLocationId(), prevAct.getLocationId(), latestArrivalTimeAtPrevAct, vehicleRoute.getDriver(),vehicleRoute.getVehicle());
-		
-		listeners.end(vehicleRoute.getStart(), latestDepTimeAtCurrAct);
-	}
-	
-	public void addListener(BackwardInTimeListener l){ listeners.addListener(l); }
-
-}

jsprit-core/src/main/java/algorithms/IterateRouteForwardInTime.java

@@ -1,87 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import org.apache.log4j.Logger;
-
-import algorithms.ForwardInTimeListeners.ForwardInTimeListener;
-import basics.costs.ForwardTransportTime;
-import basics.route.Driver;
-import basics.route.End;
-import basics.route.TourActivity;
-import basics.route.Vehicle;
-import basics.route.VehicleRoute;
-
-
-/**
- * 
- * @author sschroeder
- *
- */
-
-class IterateRouteForwardInTime implements VehicleRouteUpdater{
-	
-	private static Logger log = Logger.getLogger(IterateRouteForwardInTime.class);
-	
-	private ForwardTransportTime transportTime;
-
-	private ForwardInTimeListeners listeners;
-	
-	public IterateRouteForwardInTime(ForwardTransportTime transportTime) {
-		super();
-		this.transportTime = transportTime;
-		listeners = new ForwardInTimeListeners();
-	}
-
-	/**
-	 * 
-	 * 
-	 */
-	public void iterate(VehicleRoute vehicleRoute) {
-		if(listeners.isEmpty()) return;
-		if(vehicleRoute.isEmpty()) return;
-		listeners.start(vehicleRoute, vehicleRoute.getStart(), vehicleRoute.getStart().getEndTime());
-		
-		Vehicle vehicle = vehicleRoute.getVehicle();
-		Driver driver = vehicleRoute.getDriver();
-		TourActivity prevAct = vehicleRoute.getStart(); 
-		double startAtPrevAct = prevAct.getEndTime();		
-		
-		for(TourActivity currentAct : vehicleRoute.getTourActivities().getActivities()){ 
-			double transportTime = this.transportTime.getTransportTime(prevAct.getLocationId(), currentAct.getLocationId(), startAtPrevAct, driver, vehicle);
-			double arrivalTimeAtCurrAct = startAtPrevAct + transportTime; 
-			double operationStartTime = Math.max(currentAct.getTheoreticalEarliestOperationStartTime(), arrivalTimeAtCurrAct);
-			double operationEndTime = operationStartTime + currentAct.getOperationTime();
-			
-			listeners.nextActivity(currentAct,arrivalTimeAtCurrAct,operationEndTime);
-			
-			prevAct = currentAct;
-			startAtPrevAct = operationEndTime;
-		}
-		
-		End currentAct = vehicleRoute.getEnd();
-		double transportTime = this.transportTime.getTransportTime(prevAct.getLocationId(), currentAct.getLocationId(), startAtPrevAct, driver, vehicle);
-		double arrivalTimeAtCurrAct = startAtPrevAct + transportTime; 
-		
-		listeners.end(vehicleRoute.getEnd(), arrivalTimeAtCurrAct);
-	}
-	
-	public void addListener(ForwardInTimeListener l){
-		listeners.addListener(l);
-	}
-
-}

jsprit-core/src/main/java/algorithms/JobCalculatorSwitcher.java

@@ -8,18 +8,18 @@ import basics.route.Driver;
 import basics.route.Vehicle;
 import basics.route.VehicleRoute;
 
-public class JobCalculatorSwitcher implements JobInsertionCalculator{
+public class JobCalculatorSwitcher implements JobInsertionCostsCalculator{
 
-	private Map<Class<? extends Job>,JobInsertionCalculator> calcMap = new HashMap<Class<? extends Job>, JobInsertionCalculator>();
+	private Map<Class<? extends Job>,JobInsertionCostsCalculator> calcMap = new HashMap<Class<? extends Job>, JobInsertionCostsCalculator>();
 	
-	void put(Class<? extends Job> jobClass, JobInsertionCalculator jic){
+	void put(Class<? extends Job> jobClass, JobInsertionCostsCalculator jic){
 		calcMap.put(jobClass, jic);
 	}
 	
-	public InsertionData calculate(VehicleRoute currentRoute, Job jobToInsert, Vehicle newVehicle, double newVehicleDepartureTime, Driver newDriver, double bestKnownScore){
+	public InsertionData getInsertionData(VehicleRoute currentRoute, Job jobToInsert, Vehicle newVehicle, double newVehicleDepartureTime, Driver newDriver, double bestKnownScore){
-		JobInsertionCalculator jic = calcMap.get(jobToInsert.getClass());
+		JobInsertionCostsCalculator jic = calcMap.get(jobToInsert.getClass());
 		if(jic==null) throw new IllegalStateException("cannot find calculator for " + jobToInsert.getClass());
-		return jic.calculate(currentRoute, jobToInsert, newVehicle, newVehicleDepartureTime, newDriver, bestKnownScore);
+		return jic.getInsertionData(currentRoute, jobToInsert, newVehicle, newVehicleDepartureTime, newDriver, bestKnownScore);
 	}
 	
 }

jsprit-core/src/main/java/algorithms/JobDistance.java

@@ -20,8 +20,8 @@ import basics.Job;
 
 
 
-interface JobDistance {
+public interface JobDistance {
 
-	public double calculateDistance(Job i, Job j);
+	public double getDistance(Job i, Job j);
 
 }

jsprit-core/src/main/java/algorithms/JobDistanceAvgCosts.java

@@ -49,7 +49,7 @@ class JobDistanceAvgCosts implements JobDistance {
 	 * <p>If the distance between two jobs cannot be calculated with input-transport costs, it tries the euclidean distance between these jobs.
 	 */ 
 	@Override
-	public double calculateDistance(Job i, Job j) {
+	public double getDistance(Job i, Job j) {
 		double avgCost = 0.0;
 		if (i instanceof Service && j instanceof Service) {
 			if (i.equals(j)) {
@@ -76,7 +76,7 @@ class JobDistanceAvgCosts implements JobDistance {
 			// now try the euclidean distance between these two services
 		}
 		EuclideanServiceDistance euclidean = new EuclideanServiceDistance();
-		distance = euclidean.calculateDistance(s_i, s_j);
+		distance = euclidean.getDistance(s_i, s_j);
 		return distance;
 	}
 

jsprit-core/src/main/java/algorithms/JobDistanceBeeline.java

@@ -33,7 +33,7 @@ class JobDistanceBeeline implements JobDistance {
 	}
 
 	@Override
-	public double calculateDistance(Job i, Job j) {
+	public double getDistance(Job i, Job j) {
 		double avgCost = 0.0;
 		if (i instanceof Service && j instanceof Service) {
 			if (i.equals(j)) {

jsprit-core/src/main/java/algorithms/JobInsertionConsideringFixCostsCalculator.java

@@ -27,35 +27,35 @@ import basics.route.VehicleRoute;
 
 
 
-final class CalculatesServiceInsertionConsideringFixCost implements JobInsertionCalculator{
+final class JobInsertionConsideringFixCostsCalculator implements JobInsertionCostsCalculator{
 
-	private static final Logger logger = Logger.getLogger(CalculatesServiceInsertionConsideringFixCost.class);
+	private static final Logger logger = Logger.getLogger(JobInsertionConsideringFixCostsCalculator.class);
 	
-	private final JobInsertionCalculator standardServiceInsertion;
+	private final JobInsertionCostsCalculator standardServiceInsertion;
 	
 	private double weight_deltaFixCost = 0.5;
 	
 	private double solution_completeness_ratio = 0.5;
 	
-	private StateManager states;
+	private StateGetter stateGetter;
 
-	public CalculatesServiceInsertionConsideringFixCost(final JobInsertionCalculator standardInsertionCalculator, StateManager activityStates2) {
+	public JobInsertionConsideringFixCostsCalculator(final JobInsertionCostsCalculator standardInsertionCalculator, StateGetter stateGetter) {
 		super();
 		this.standardServiceInsertion = standardInsertionCalculator;
-		this.states = activityStates2;
+		this.stateGetter = stateGetter;
 		logger.info("inialise " + this);
 	}
 
 	@Override
-	public InsertionData calculate(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double bestKnownPrice) {
+	public InsertionData getInsertionData(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double bestKnownPrice) {
 		double relFixCost = getDeltaRelativeFixCost(currentRoute, newVehicle, jobToInsert);
 		double absFixCost = getDeltaAbsoluteFixCost(currentRoute, newVehicle, jobToInsert);
 		double deltaFixCost = (1-solution_completeness_ratio)*relFixCost + solution_completeness_ratio*absFixCost;
 		double fixcost_contribution = weight_deltaFixCost*solution_completeness_ratio*deltaFixCost;
 		if(fixcost_contribution > bestKnownPrice){
-			return InsertionData.noInsertionFound();
+			return InsertionData.createEmptyInsertionData();
 		}
-		InsertionData iData = standardServiceInsertion.calculate(currentRoute, jobToInsert, newVehicle, newVehicleDepartureTime, newDriver, bestKnownPrice);
+		InsertionData iData = standardServiceInsertion.getInsertionData(currentRoute, jobToInsert, newVehicle, newVehicleDepartureTime, newDriver, bestKnownPrice);
 		if(iData instanceof NoInsertionFound){
 			return iData;
 		} 
@@ -80,7 +80,7 @@ final class CalculatesServiceInsertionConsideringFixCost implements JobInsertion
 	}
 
 	private double getDeltaAbsoluteFixCost(VehicleRoute route, Vehicle newVehicle, Job job) {
-		double load = getCurrentLoad(route) + job.getCapacityDemand();
+		double load = getCurrentMaxLoadInRoute(route) + job.getCapacityDemand();
 		double currentFix = 0.0;
 		if(route.getVehicle() != null){
 			if(!(route.getVehicle() instanceof NoVehicle)){
@@ -94,7 +94,7 @@ final class CalculatesServiceInsertionConsideringFixCost implements JobInsertion
 	}
 
 	private double getDeltaRelativeFixCost(VehicleRoute route, Vehicle newVehicle, Job job) {
-		int currentLoad = getCurrentLoad(route);
+		int currentLoad = getCurrentMaxLoadInRoute(route);
 		double load = currentLoad + job.getCapacityDemand();
 		double currentRelFix = 0.0;
 		if(route.getVehicle() != null){
@@ -109,8 +109,8 @@ final class CalculatesServiceInsertionConsideringFixCost implements JobInsertion
 		return relativeFixCost;
 	}
 
-	private int getCurrentLoad(VehicleRoute route) {
+	private int getCurrentMaxLoadInRoute(VehicleRoute route) {
-		return (int) states.getRouteState(route, StateTypes.LOAD).toDouble();
+		return (int) stateGetter.getRouteState(route, StateFactory.MAXLOAD).toDouble();
 	}
 
 }

jsprit-core/src/main/java/algorithms/JobInsertionCostsCalculator.java

@@ -22,8 +22,8 @@ import basics.route.Vehicle;
 import basics.route.VehicleRoute;
 
 
- interface JobInsertionCalculator {
+ public interface JobInsertionCostsCalculator {
 	
-	public InsertionData calculate(VehicleRoute currentRoute, Job jobToInsert, Vehicle newVehicle, double newVehicleDepartureTime, Driver newDriver, double bestKnownScore);
+	public InsertionData getInsertionData(VehicleRoute currentRoute, Job newJob, Vehicle newVehicle, double newVehicleDepartureTime, Driver newDriver, double bestKnownCosts);
 
 }

jsprit-core/src/main/java/algorithms/LocalActivityInsertionCostsCalculator.java

@@ -20,38 +20,42 @@
  ******************************************************************************/
 package algorithms;
 
-import algorithms.HardConstraints.HardActivityLevelConstraint;
 import basics.costs.VehicleRoutingActivityCosts;
 import basics.costs.VehicleRoutingTransportCosts;
 import basics.route.TourActivity;
 
+/**
+ * Calculates activity insertion costs locally, i.e. by comparing the additional costs of insertion the new activity k between
+ * activity i (prevAct) and j (nextAct).
+ * Additional costs are then basically calculated as delta c = c_ik + c_kj - c_ij.
+ * 
+ * <p>Note once time has an effect on costs this class requires activity endTimes.
+ * 
+ * @author stefan
+ *
+ */
 class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCalculator{
 
-	private HardActivityLevelConstraint hardConstraint;
-
 	private VehicleRoutingTransportCosts routingCosts;
 	
 	private VehicleRoutingActivityCosts activityCosts;
 	
-	public LocalActivityInsertionCostsCalculator(VehicleRoutingTransportCosts routingCosts, VehicleRoutingActivityCosts actCosts, HardActivityLevelConstraint hardActivityLevelConstraint) {
+	
+	public LocalActivityInsertionCostsCalculator(VehicleRoutingTransportCosts routingCosts, VehicleRoutingActivityCosts actCosts) {
 		super();
 		this.routingCosts = routingCosts;
 		this.activityCosts = actCosts;
-		this.hardConstraint = hardActivityLevelConstraint;
 	}
 
 	@Override
-	public ActivityInsertionCosts calculate(InsertionContext iFacts, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double depTimeAtPrevAct) {
+	public ActivityInsertionCosts getCosts(InsertionContext iFacts, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double depTimeAtPrevAct) {
-		if(!hardConstraint.fulfilled(iFacts, prevAct, newAct, nextAct, depTimeAtPrevAct)){
-			return null;
-		}
 		
 		double tp_costs_prevAct_newAct = routingCosts.getTransportCost(prevAct.getLocationId(), newAct.getLocationId(), depTimeAtPrevAct, iFacts.getNewDriver(), iFacts.getNewVehicle());
 		double tp_time_prevAct_newAct = routingCosts.getTransportTime(prevAct.getLocationId(), newAct.getLocationId(), depTimeAtPrevAct, iFacts.getNewDriver(), iFacts.getNewVehicle());
 		
 		double newAct_arrTime = depTimeAtPrevAct + tp_time_prevAct_newAct;
 		
-		double newAct_endTime = CalcUtils.getActivityEndTime(newAct_arrTime, newAct);
+		double newAct_endTime = CalculationUtils.getActivityEndTime(newAct_arrTime, newAct);
 		
 		double act_costs_newAct = activityCosts.getActivityCost(newAct, newAct_arrTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
 		

jsprit-core/src/main/java/algorithms/NeighborhoodThresholdInitialiser.java

@@ -35,7 +35,7 @@ import basics.algo.VehicleRoutingAlgorithmFactory;
 import basics.route.TourActivity;
 import basics.route.VehicleRoute;
 
-public class NeighborhoodThresholdInitialiser implements AlgorithmStartsListener{
+class NeighborhoodThresholdInitialiser implements AlgorithmStartsListener{
 
 	private static Logger log = Logger.getLogger(NeighborhoodThresholdInitialiser.class);
 	

jsprit-core/src/main/java/algorithms/RadialRuinStrategyFactory.java

@@ -0,0 +1,22 @@
+package algorithms;
+
+import basics.VehicleRoutingProblem;
+
+public class RadialRuinStrategyFactory implements RuinStrategyFactory{
+
+	private double fraction;
+	
+	private JobDistance jobDistance;
+	
+	public RadialRuinStrategyFactory(double fraction, JobDistance jobDistance) {
+		super();
+		this.fraction = fraction;
+		this.jobDistance = jobDistance;
+	}
+
+	@Override
+	public RuinStrategy createStrategy(VehicleRoutingProblem vrp) {
+		return new RuinRadial(vrp,fraction,jobDistance);
+	}
+
+}

jsprit-core/src/main/java/algorithms/RandomRuinStrategyFactory.java

@@ -0,0 +1,19 @@
+package algorithms;
+
+import basics.VehicleRoutingProblem;
+
+public class RandomRuinStrategyFactory implements RuinStrategyFactory{
+
+	private double fraction;
+	
+	public RandomRuinStrategyFactory(double fraction) {
+		super();
+		this.fraction = fraction;
+	}
+
+	@Override
+	public RuinStrategy createStrategy(VehicleRoutingProblem vrp) {
+		return new RuinRandom(vrp, fraction);
+	}
+
+}

jsprit-core/src/main/java/algorithms/RemoveEmptyVehicles.java

@@ -23,6 +23,7 @@ import java.util.List;
 import org.apache.log4j.Logger;
 
 import basics.algo.InsertionEndsListener;
+import basics.route.VehicleFleetManager;
 import basics.route.VehicleRoute;
 
 class RemoveEmptyVehicles implements InsertionEndsListener{
@@ -31,7 +32,7 @@ class RemoveEmptyVehicles implements InsertionEndsListener{
 	
 	private VehicleFleetManager fleetManager;
 	
-	RemoveEmptyVehicles(VehicleFleetManager fleetManager) {
+	public RemoveEmptyVehicles(VehicleFleetManager fleetManager) {
 		super();
 		this.fleetManager = fleetManager;
 	}

jsprit-core/src/main/java/algorithms/ResetAndIniFleetManager.java

@@ -23,6 +23,7 @@ import org.apache.log4j.Logger;
 
 import basics.Job;
 import basics.algo.InsertionStartsListener;
+import basics.route.VehicleFleetManager;
 import basics.route.VehicleRoute;
 
 class ResetAndIniFleetManager implements InsertionStartsListener{

jsprit-core/src/main/java/algorithms/RouteLevelActivityInsertionCostsEstimator.java

@@ -23,7 +23,6 @@ package algorithms;
 import java.util.ArrayList;
 import java.util.List;
 
-import algorithms.HardConstraints.HardActivityLevelConstraint;
 import basics.costs.VehicleRoutingActivityCosts;
 import basics.costs.VehicleRoutingTransportCosts;
 import basics.route.End;
@@ -33,30 +32,23 @@ import basics.route.VehicleRoute;
 
 class RouteLevelActivityInsertionCostsEstimator implements ActivityInsertionCostsCalculator{
 
-	private HardActivityLevelConstraint hardConstraint;
-
 	private VehicleRoutingActivityCosts activityCosts;
 	
 	private AuxilliaryCostCalculator auxilliaryPathCostCalculator;
 	
-	private StateManager stateManager;
+	private StateGetter stateManager;
 	
 	private int nuOfActivities2LookForward = 0;
 	
-	public RouteLevelActivityInsertionCostsEstimator(VehicleRoutingTransportCosts routingCosts, VehicleRoutingActivityCosts actCosts, HardActivityLevelConstraint hardActivityLevelConstraint, StateManager stateManager) {
+	public RouteLevelActivityInsertionCostsEstimator(VehicleRoutingTransportCosts routingCosts, VehicleRoutingActivityCosts actCosts, StateGetter stateManager) {
 		super();
 		this.activityCosts = actCosts;
-		this.hardConstraint = hardActivityLevelConstraint;
 		this.stateManager = stateManager;
 		auxilliaryPathCostCalculator = new AuxilliaryCostCalculator(routingCosts, activityCosts);
 	}
 
 	@Override
-	public ActivityInsertionCosts calculate(InsertionContext iFacts, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double depTimeAtPrevAct) {
+	public ActivityInsertionCosts getCosts(InsertionContext iFacts, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double depTimeAtPrevAct) {
-		if(!hardConstraint.fulfilled(iFacts, prevAct, newAct, nextAct, depTimeAtPrevAct)){
-			return null;
-		}
-		
 		List<TourActivity> path = new ArrayList<TourActivity>();
 		path.add(prevAct); path.add(newAct); path.add(nextAct);
 		int actIndex;
@@ -77,9 +69,9 @@ class RouteLevelActivityInsertionCostsEstimator implements ActivityInsertionCost
 	
 	private double actCostsOld(VehicleRoute vehicleRoute, TourActivity act) {
 		if(act instanceof End){
-			return stateManager.getRouteState(vehicleRoute,StateTypes.COSTS).toDouble();
+			return stateManager.getRouteState(vehicleRoute,StateFactory.COSTS).toDouble();
 		}
-		return stateManager.getActivityState(act,StateTypes.COSTS).toDouble();
+		return stateManager.getActivityState(act,StateFactory.COSTS).toDouble();
 	}
 	
 	private List<TourActivity> getForwardLookingPath(VehicleRoute route, int actIndex) {

jsprit-core/src/main/java/algorithms/RuinAndRecreateModule.java

@@ -18,14 +18,14 @@ package algorithms;
 
 import java.util.Collection;
 
-import algorithms.RuinStrategy.RuinListener;
 import basics.Job;
 import basics.VehicleRoutingProblemSolution;
 import basics.algo.InsertionListener;
+import basics.algo.RuinListener;
 import basics.algo.SearchStrategyModule;
 import basics.algo.SearchStrategyModuleListener;
 
-class RuinAndRecreateModule implements SearchStrategyModule{
+public class RuinAndRecreateModule implements SearchStrategyModule{
 
 	private InsertionStrategy insertion;
 	
@@ -44,9 +44,8 @@ class RuinAndRecreateModule implements SearchStrategyModule{
 	public VehicleRoutingProblemSolution runAndGetSolution(VehicleRoutingProblemSolution vrpSolution) {
 		Collection<Job> ruinedJobs = ruin.ruin(vrpSolution.getRoutes());
 		insertion.insertJobs(vrpSolution.getRoutes(), ruinedJobs);
-//		double totalCost = RouteUtils.getTotalCost(vrpSolution.getRoutes());
-//		vrpSolution.setCost(totalCost);
 		return vrpSolution;
+
 	}
 
 	@Override

jsprit-core/src/main/java/algorithms/RuinListeners.java

@@ -1,54 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-
-import algorithms.RuinStrategy.RuinListener;
-import basics.Job;
-import basics.route.VehicleRoute;
-
-class RuinListeners {
-	
-	private Collection<RuinListener> ruinListeners = new ArrayList<RuinListener>();
-
-	void ruinStarts(Collection<VehicleRoute> routes){
-		for(RuinListener l : ruinListeners) l.ruinStarts(routes);
-	}
-	
-	void ruinEnds(Collection<VehicleRoute> routes, Collection<Job> unassignedJobs){
-		for(RuinListener l : ruinListeners) l.ruinEnds(routes, unassignedJobs);
-	}
-	
-	void removed(Job job, VehicleRoute fromRoute){
-		for(RuinListener l : ruinListeners) l.removed(job, fromRoute);
-	}
-	
-	void addListener(RuinListener ruinListener){
-		ruinListeners.add(ruinListener);
-	}
-	
-	void removeListener(RuinListener ruinListener){
-		ruinListeners.remove(ruinListener);
-	}
-	
-	Collection<RuinListener> getListeners(){
-		return Collections.unmodifiableCollection(ruinListeners);
-	}
-}

jsprit-core/src/main/java/algorithms/RuinRadial.java

@@ -33,6 +33,8 @@ import util.RandomNumberGeneration;
 import util.StopWatch;
 import basics.Job;
 import basics.VehicleRoutingProblem;
+import basics.algo.RuinListener;
+import basics.algo.RuinListeners;
 import basics.route.VehicleRoute;
 
 
@@ -120,7 +122,7 @@ final class RuinRadial implements RuinStrategy {
 					});
 			distanceNodeTree.put(i.getId(), treeSet);
 			for (Job j : vrp.getJobs().values()) {
-				double distance = jobDistance.calculateDistance(i, j);
+				double distance = jobDistance.getDistance(i, j);
 				ReferencedJob refNode = new ReferencedJob(j, distance);
 				treeSet.add(refNode);
 				nuOfDistancesStored++;

jsprit-core/src/main/java/algorithms/RuinRandom.java

@@ -27,6 +27,8 @@ import org.apache.log4j.Logger;
 import util.RandomNumberGeneration;
 import basics.Job;
 import basics.VehicleRoutingProblem;
+import basics.algo.RuinListener;
+import basics.algo.RuinListeners;
 import basics.route.VehicleRoute;
 
 

jsprit-core/src/main/java/algorithms/RuinStrategy.java

@@ -19,6 +19,7 @@ package algorithms;
 import java.util.Collection;
 
 import basics.Job;
+import basics.algo.RuinListener;
 import basics.route.VehicleRoute;
 
 
@@ -30,40 +31,7 @@ import basics.route.VehicleRoute;
  * 
  */
 
-interface RuinStrategy {
+public interface RuinStrategy {
-	
-	/**
-	 * Listener that listens to the ruin-process. It informs whoever is interested about start, end and about a removal of a job.
-	 * 
-	 * @author schroeder
-	 *
-	 */
-	public static interface RuinListener {
-		
-		/**
-		 * informs about ruin-start.
-		 * 
-		 * @param routes
-		 */
-		public void ruinStarts(Collection<VehicleRoute> routes);
-		
-		/**
-		 * informs about ruin-end.
-		 * 
-		 * @param routes
-		 * @param unassignedJobs
-		 */
-		public void ruinEnds(Collection<VehicleRoute> routes, Collection<Job> unassignedJobs);
-		
-		/**
-		 * informs if a {@link Job} has been removed from a {@link VehicleRoute}.
-		 * 
-		 * @param job
-		 * @param fromRoute
-		 */
-		public void removed(Job job, VehicleRoute fromRoute);
-		
-	}
 	
 	/**
 	 * Ruins a current solution, i.e. a collection of vehicle-routes and 

jsprit-core/src/main/java/algorithms/RuinStrategyFactory.java

@@ -18,7 +18,7 @@ package algorithms;
 
 import basics.VehicleRoutingProblem;
 
-interface RuinStrategyFactory {
+public interface RuinStrategyFactory {
 	
 	public RuinStrategy createStrategy(VehicleRoutingProblem vrp);
 

jsprit-core/src/main/java/algorithms/ServiceInsertionCalculator.java

@@ -20,7 +20,8 @@ import org.apache.log4j.Logger;
 
 import util.Neighborhood;
 import algorithms.ActivityInsertionCostsCalculator.ActivityInsertionCosts;
-import algorithms.HardConstraints.HardRouteLevelConstraint;
+
+import algorithms.HardActivityLevelConstraint.ConstraintsStatus;
 import basics.Job;
 import basics.Service;
 import basics.costs.VehicleRoutingTransportCosts;
@@ -36,12 +37,14 @@ import basics.route.VehicleRoute;
 
 
 
-final class ServiceInsertionCalculator implements JobInsertionCalculator{
+final class ServiceInsertionCalculator implements JobInsertionCostsCalculator{
 
 	private static final Logger logger = Logger.getLogger(ServiceInsertionCalculator.class);
 
 	private HardRouteLevelConstraint hardRouteLevelConstraint;
 	
+	private HardActivityLevelConstraint hardActivityLevelConstraint;
+	
 	private Neighborhood neighborhood = new Neighborhood() {
 		
 		@Override
@@ -61,10 +64,12 @@ final class ServiceInsertionCalculator implements JobInsertionCalculator{
 		logger.info("initialise neighborhood " + neighborhood);
 	}
 	
-	public ServiceInsertionCalculator(VehicleRoutingTransportCosts routingCosts, ActivityInsertionCostsCalculator activityInsertionCostsCalculator, HardRouteLevelConstraint hardRouteLevelConstraint) {
+
+	public ServiceInsertionCalculator(VehicleRoutingTransportCosts routingCosts, ActivityInsertionCostsCalculator activityInsertionCostsCalculator, HardRouteLevelConstraint hardRouteLevelConstraint, HardActivityLevelConstraint hardActivityLevelConstraint) {
 		super();
 		this.activityInsertionCostsCalculator = activityInsertionCostsCalculator;
 		this.hardRouteLevelConstraint = hardRouteLevelConstraint;
+		this.hardActivityLevelConstraint = hardActivityLevelConstraint;
 		this.transportCosts = routingCosts;
 		activityFactory = new DefaultTourActivityFactory();
 		logger.info("initialise " + this);
@@ -81,13 +86,13 @@ final class ServiceInsertionCalculator implements JobInsertionCalculator{
 	 *  
 	 */
 	@Override
-	public InsertionData calculate(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double bestKnownCosts) {
+	public InsertionData getInsertionData(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double bestKnownCosts) {
 		if(jobToInsert == null) throw new IllegalStateException("jobToInsert is missing.");
 		if(newVehicle == null || newVehicle instanceof NoVehicle) throw new IllegalStateException("newVehicle is missing.");
 		
 		InsertionContext insertionContext = new InsertionContext(currentRoute, jobToInsert, newVehicle, newDriver, newVehicleDepartureTime);
 		if(!hardRouteLevelConstraint.fulfilled(insertionContext)){
-			return InsertionData.noInsertionFound();
+			return InsertionData.createEmptyInsertionData();
 		}
 		
 		double bestCost = bestKnownCosts;
@@ -99,36 +104,40 @@ final class ServiceInsertionCalculator implements JobInsertionCalculator{
 		
 		Start start = Start.newInstance(newVehicle.getLocationId(), newVehicle.getEarliestDeparture(), newVehicle.getLatestArrival());
 		start.setEndTime(newVehicleDepartureTime);
-		
 		End end = End.newInstance(newVehicle.getLocationId(), 0.0, newVehicle.getLatestArrival());
 		
 		TourActivity prevAct = start;
 		double prevActStartTime = newVehicleDepartureTime;
 		int actIndex = 0;
-
+		boolean loopBroken = false;
 		for(TourActivity nextAct : currentRoute.getTourActivities().getActivities()){
 			if(neighborhood.areNeighbors(deliveryAct2Insert.getLocationId(), prevAct.getLocationId()) && neighborhood.areNeighbors(deliveryAct2Insert.getLocationId(), nextAct.getLocationId())){
+				ConstraintsStatus status = hardActivityLevelConstraint.fulfilled(insertionContext, prevAct, deliveryAct2Insert, nextAct, prevActStartTime);
+				if(status.equals(ConstraintsStatus.FULFILLED)){
 					ActivityInsertionCosts mc = calculate(insertionContext, prevAct, nextAct, deliveryAct2Insert, prevActStartTime);
-				if(mc != null){ 
 					if(mc.getAdditionalCosts() < bestCost){
 						bestCost = mc.getAdditionalCosts();
 						bestMarginals = mc;
 						insertionIndex = actIndex;
 					}
 				}
+				else if(status.equals(ConstraintsStatus.NOT_FULFILLED_BREAK)){
+					loopBroken = true;
+					break;
+				}
 			}
 			double nextActArrTime = prevActStartTime + transportCosts.getTransportTime(prevAct.getLocationId(), nextAct.getLocationId(), prevActStartTime, newDriver, newVehicle);
-			double nextActEndTime = CalcUtils.getActivityEndTime(nextActArrTime, nextAct);
+			double nextActEndTime = CalculationUtils.getActivityEndTime(nextActArrTime, nextAct);
-			
 			prevActStartTime = nextActEndTime;
-
 			prevAct = nextAct;
 			actIndex++;
 		}
 		End nextAct = end;
+		if(!loopBroken){
 			if(neighborhood.areNeighbors(deliveryAct2Insert.getLocationId(), prevAct.getLocationId()) && neighborhood.areNeighbors(deliveryAct2Insert.getLocationId(), nextAct.getLocationId())){
+				ConstraintsStatus status = hardActivityLevelConstraint.fulfilled(insertionContext, prevAct, deliveryAct2Insert, nextAct, prevActStartTime); 
+				if(status.equals(ConstraintsStatus.FULFILLED)){
 					ActivityInsertionCosts mc = calculate(insertionContext, prevAct, nextAct, deliveryAct2Insert, prevActStartTime);
-			if(mc != null) {
 					if(mc.getAdditionalCosts() < bestCost){
 						bestCost = mc.getAdditionalCosts();
 						bestMarginals = mc;
@@ -136,9 +145,10 @@ final class ServiceInsertionCalculator implements JobInsertionCalculator{
 					}
 				}
 			}
+		}
 
 		if(insertionIndex == InsertionData.NO_INDEX) {
-			return InsertionData.noInsertionFound();
+			return InsertionData.createEmptyInsertionData();
 		}
 		InsertionData insertionData = new InsertionData(bestCost, InsertionData.NO_INDEX, insertionIndex, newVehicle, newDriver);
 		insertionData.setVehicleDepartureTime(newVehicleDepartureTime);
@@ -147,7 +157,6 @@ final class ServiceInsertionCalculator implements JobInsertionCalculator{
 	}
 
 	public ActivityInsertionCosts calculate(InsertionContext iFacts, TourActivity prevAct, TourActivity nextAct, TourActivity newAct, double departureTimeAtPrevAct) {	
-		return activityInsertionCostsCalculator.calculate(iFacts, prevAct, nextAct, newAct, departureTimeAtPrevAct);
+		return activityInsertionCostsCalculator.getCosts(iFacts, prevAct, nextAct, newAct, departureTimeAtPrevAct);		
-		
 	}
 }

jsprit-core/src/main/java/algorithms/ServiceInsertionOnRouteLevelCalculator.java

@@ -27,7 +27,7 @@ import org.apache.log4j.Logger;
 
 import util.Neighborhood;
 import algorithms.ActivityInsertionCostsCalculator.ActivityInsertionCosts;
-import algorithms.HardConstraints.HardRouteLevelConstraint;
+import algorithms.HardActivityLevelConstraint.ConstraintsStatus;
 import basics.Job;
 import basics.Service;
 import basics.costs.VehicleRoutingActivityCosts;
@@ -45,9 +45,9 @@ import basics.route.VehicleRoute;
 
 
 
-final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalculator{
+final class ServiceInsertionOnRouteLevelCalculator implements JobInsertionCostsCalculator{
 	
-	private static final Logger logger = Logger.getLogger(CalculatesServiceInsertionOnRouteLevel.class);
+	private static final Logger logger = Logger.getLogger(ServiceInsertionOnRouteLevelCalculator.class);
 	
 	private final VehicleRoutingTransportCosts transportCosts;
 	
@@ -57,10 +57,12 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 	
 	private TourActivityFactory tourActivityFactory = new DefaultTourActivityFactory();
 	
-	private StateManager stateManager;
+	private StateGetter stateManager;
 	
 	private HardRouteLevelConstraint hardRouteLevelConstraint;
 	
+	private HardActivityLevelConstraint hardActivityLevelConstraint;
+	
 	private ActivityInsertionCostsCalculator activityInsertionCostsCalculator;
 	
 	private int nuOfActsForwardLooking = 0;
@@ -94,18 +96,19 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 		logger.info("set [solutionMemory="+memorySize+"]");
 	}
 
-	public CalculatesServiceInsertionOnRouteLevel(VehicleRoutingTransportCosts vehicleRoutingCosts, VehicleRoutingActivityCosts costFunc, HardRouteLevelConstraint hardRouteLevelConstraint, ActivityInsertionCostsCalculator activityInsertionCostsCalculator) {
+	public ServiceInsertionOnRouteLevelCalculator(VehicleRoutingTransportCosts vehicleRoutingCosts, VehicleRoutingActivityCosts costFunc, ActivityInsertionCostsCalculator activityInsertionCostsCalculator, HardRouteLevelConstraint hardRouteLevelConstraint, HardActivityLevelConstraint hardActivityLevelConstraint) {
 			super();
 			this.transportCosts = vehicleRoutingCosts;
 			this.activityCosts = costFunc;
-			this.hardRouteLevelConstraint = hardRouteLevelConstraint;
 			this.activityInsertionCostsCalculator = activityInsertionCostsCalculator;
+			this.hardRouteLevelConstraint = hardRouteLevelConstraint;
+			this.hardActivityLevelConstraint = hardActivityLevelConstraint;
 			auxilliaryPathCostCalculator = new AuxilliaryCostCalculator(transportCosts, activityCosts);
 			logger.info("initialise " + this);
 		}
 
 
-	public void setStates(StateManager stateManager){
+	public void setStates(StateGetter stateManager){
 		this.stateManager = stateManager;
 	}
 	
@@ -128,13 +131,13 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 	 * 
 	 */
 	@Override
-	public InsertionData calculate(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double best_known_insertion_costs) {
+	public InsertionData getInsertionData(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double best_known_insertion_costs) {
 		if(jobToInsert == null) throw new IllegalStateException("job is null. cannot calculate the insertion of a null-job.");
 		if(newVehicle == null || newVehicle instanceof NoVehicle) throw new IllegalStateException("no vehicle given. set para vehicle!");
 		
 		InsertionContext insertionContext = new InsertionContext(currentRoute, jobToInsert, newVehicle, newDriver, newVehicleDepartureTime);
 		if(!hardRouteLevelConstraint.fulfilled(insertionContext)){
-			return InsertionData.noInsertionFound();
+			return InsertionData.createEmptyInsertionData();
 		}
 		
 		/**
@@ -151,6 +154,7 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 		double best_insertion_costs = best_known_insertion_costs;
 		Service service = (Service)jobToInsert;
 
+		
 		/**
 		 * some inis
 		 */
@@ -164,6 +168,7 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 		double sumOf_prevCosts_newVehicle = 0.0;
 		double prevActDepTime_newVehicle = start.getEndTime();
 
+		boolean loopBroken = false;
 		/**
 		 * inserting serviceAct2Insert in route r={0,1,...,i-1,i,j,j+1,...,n(r),n(r)+1}
 		 * i=prevAct
@@ -172,12 +177,13 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 		 */
 		for(TourActivity nextAct : tour.getActivities()){
 			if(neighborhood.areNeighbors(serviceAct2Insert.getLocationId(), prevAct.getLocationId()) && neighborhood.areNeighbors(serviceAct2Insert.getLocationId(), nextAct.getLocationId())){
+				ConstraintsStatus status = hardActivityLevelConstraint.fulfilled(insertionContext, prevAct, serviceAct2Insert, nextAct, prevActDepTime_newVehicle);
+				if(status.equals(ConstraintsStatus.FULFILLED)){
 					/**
 					 * builds a path on this route forwardPath={i,k,j,j+1,j+2,...,j+nuOfActsForwardLooking}
 					 */		
-				InsertionContext iContext = new InsertionContext(currentRoute, jobToInsert, newVehicle, newDriver, prevActDepTime_newVehicle);
+					ActivityInsertionCosts actInsertionCosts = activityInsertionCostsCalculator.getCosts(insertionContext, prevAct, nextAct, serviceAct2Insert, prevActDepTime_newVehicle);
-				ActivityInsertionCosts actInsertionCosts = activityInsertionCostsCalculator.calculate(iContext, prevAct, nextAct, serviceAct2Insert, prevActDepTime_newVehicle);
+
-				if(actInsertionCosts != null){
 					/**
 					 * insertion_cost_approximation = c({0,1,...,i},newVehicle) + c({i,k,j,j+1,j+2,...,j+nuOfActsForwardLooking},newVehicle) - c({0,1,...,i,j,j+1,...,j+nuOfActsForwardLooking},oldVehicle)
 					 */
@@ -190,6 +196,10 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 						bestInsertionsQueue.add(new InsertionData(insertion_cost_approximation, InsertionData.NO_INDEX, actIndex, newVehicle, newDriver));
 					}
 				}
+				else if(status.equals(ConstraintsStatus.NOT_FULFILLED_BREAK)){
+					loopBroken = true;
+					break;
+				}
 			}
 
 			/**
@@ -219,11 +229,12 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 
 			actIndex++;
 		}
+		if(!loopBroken){
 			End nextAct = end;
 			if(neighborhood.areNeighbors(serviceAct2Insert.getLocationId(), prevAct.getLocationId()) && neighborhood.areNeighbors(serviceAct2Insert.getLocationId(), nextAct.getLocationId())){
-
+				ConstraintsStatus status = hardActivityLevelConstraint.fulfilled(insertionContext, prevAct, serviceAct2Insert, nextAct, prevActDepTime_newVehicle);
-			InsertionContext iContext = new InsertionContext(currentRoute, jobToInsert, newVehicle, newDriver, prevActDepTime_newVehicle);
+				if(status.equals(ConstraintsStatus.FULFILLED)){
-			ActivityInsertionCosts actInsertionCosts = activityInsertionCostsCalculator.calculate(iContext, prevAct, nextAct, serviceAct2Insert, prevActDepTime_newVehicle);
+					ActivityInsertionCosts actInsertionCosts = activityInsertionCostsCalculator.getCosts(insertionContext, prevAct, nextAct, serviceAct2Insert, prevActDepTime_newVehicle);
 					if(actInsertionCosts != null){
 						/**
 						 * insertion_cost_approximation = c({0,1,...,i},newVehicle) + c({i,k,j,j+1,j+2,...,j+nuOfActsForwardLooking},newVehicle) - c({0,1,...,i,j,j+1,...,j+nuOfActsForwardLooking},oldVehicle)
@@ -238,6 +249,8 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 						}
 					}
 				}
+			}
+		}
 
 		
 		/**
@@ -254,6 +267,7 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 			}
 		}
 		else{
+		
 			for(int i=0;i<memorySize;i++){
 				InsertionData data = bestInsertionsQueue.poll();
 				if(data == null){
@@ -271,7 +285,7 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 				/**
 				 * compute cost-diff of tour with and without new activity --> insertion_costs
 				 */
-				double insertion_costs = auxilliaryPathCostCalculator.costOfPath(wholeTour, start.getEndTime(), newDriver, newVehicle) - stateManager.getRouteState(currentRoute,StateTypes.COSTS).toDouble();
+				double insertion_costs = auxilliaryPathCostCalculator.costOfPath(wholeTour, start.getEndTime(), newDriver, newVehicle) - stateManager.getRouteState(currentRoute,StateFactory.COSTS).toDouble();
 
 				/**
 				 * if better than best known, make it the best known
@@ -282,7 +296,7 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 				}
 			}
 		}
-		if(best_insertion_index == InsertionData.NO_INDEX) return InsertionData.noInsertionFound();
+		if(best_insertion_index == InsertionData.NO_INDEX) return InsertionData.createEmptyInsertionData();
 		return new InsertionData(best_insertion_costs, InsertionData.NO_INDEX, best_insertion_index, newVehicle, newDriver);
 	}
 	
@@ -316,9 +330,9 @@ final class CalculatesServiceInsertionOnRouteLevel implements JobInsertionCalcul
 
 	private double sumOf_prevCosts_oldVehicle(VehicleRoute vehicleRoute, TourActivity act) {
 		if(act instanceof End){
-			return stateManager.getRouteState(vehicleRoute,StateTypes.COSTS).toDouble();
+			return stateManager.getRouteState(vehicleRoute,StateFactory.COSTS).toDouble();
 		}
-		return stateManager.getActivityState(act,StateTypes.COSTS).toDouble();
+		return stateManager.getActivityState(act,StateFactory.COSTS).toDouble();
 	}
 
 	/**

jsprit-core/src/main/java/algorithms/ShipmentInsertionCalculator.java

@@ -22,7 +22,7 @@ import org.apache.log4j.Logger;
 
 import util.Neighborhood;
 import algorithms.ActivityInsertionCostsCalculator.ActivityInsertionCosts;
-import algorithms.HardConstraints.HardRouteLevelConstraint;
+import algorithms.HardActivityLevelConstraint.ConstraintsStatus;
 import basics.Job;
 import basics.Shipment;
 import basics.costs.VehicleRoutingTransportCosts;
@@ -38,12 +38,14 @@ import basics.route.VehicleRoute;
 
 
 
-final class ShipmentInsertionCalculator implements JobInsertionCalculator{
+final class ShipmentInsertionCalculator implements JobInsertionCostsCalculator{
 
 	private static final Logger logger = Logger.getLogger(ShipmentInsertionCalculator.class);
 
 	private HardRouteLevelConstraint hardRouteLevelConstraint;
 	
+	private HardActivityLevelConstraint hardActivityLevelConstraint;
+	
 	private Neighborhood neighborhood = new Neighborhood() {
 		
 		@Override
@@ -63,10 +65,11 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 		logger.info("initialise neighborhood " + neighborhood);
 	}
 	
-	public ShipmentInsertionCalculator(VehicleRoutingTransportCosts routingCosts, ActivityInsertionCostsCalculator activityInsertionCostsCalculator, HardRouteLevelConstraint hardRouteLevelConstraint) {
+	public ShipmentInsertionCalculator(VehicleRoutingTransportCosts routingCosts, ActivityInsertionCostsCalculator activityInsertionCostsCalculator, HardRouteLevelConstraint hardRouteLevelConstraint, HardActivityLevelConstraint hardActivityLevelConstraint) {
 		super();
 		this.activityInsertionCostsCalculator = activityInsertionCostsCalculator;
 		this.hardRouteLevelConstraint = hardRouteLevelConstraint;
+		this.hardActivityLevelConstraint = hardActivityLevelConstraint;
 		this.transportCosts = routingCosts;
 		activityFactory = new DefaultShipmentActivityFactory();
 		logger.info("initialise " + this);
@@ -83,25 +86,24 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 	 *  
 	 */
 	@Override
-	public InsertionData calculate(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double bestKnownCosts) {
+	public InsertionData getInsertionData(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle newVehicle, double newVehicleDepartureTime, final Driver newDriver, final double bestKnownCosts) {
 		if(jobToInsert == null) throw new IllegalStateException("jobToInsert is missing.");
 		if(newVehicle == null || newVehicle instanceof NoVehicle) throw new IllegalStateException("newVehicle is missing.");
 		if(!(jobToInsert instanceof Shipment)) throw new IllegalStateException("jobToInsert should be of type Shipment!");
 		
 		InsertionContext insertionContext = new InsertionContext(currentRoute, jobToInsert, newVehicle, newDriver, newVehicleDepartureTime);
 		if(!hardRouteLevelConstraint.fulfilled(insertionContext)){
-			return InsertionData.noInsertionFound();
+			return InsertionData.createEmptyInsertionData();
 		}
 		
 		double bestCost = bestKnownCosts;
 		Shipment shipment = (Shipment)jobToInsert;
 		TourActivity pickupShipment = activityFactory.createPickup(shipment);
-		TourActivity deliveryShipment = activityFactory.createDelivery(shipment);
+		TourActivity deliverShipment = activityFactory.createDelivery(shipment);
 		
 		int pickupInsertionIndex = InsertionData.NO_INDEX;
 		int deliveryInsertionIndex = InsertionData.NO_INDEX;
 		
-//		int insertionIndex = 0;
 		Start start = Start.newInstance(newVehicle.getLocationId(), newVehicle.getEarliestDeparture(), newVehicle.getLatestArrival());
 		start.setEndTime(newVehicleDepartureTime);
 		
@@ -109,23 +111,32 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 		
 		TourActivity prevAct = start;
 		double prevActEndTime = newVehicleDepartureTime;
+		boolean pickupShipmentLoopBroken = false;
 		//pickupShipmentLoop
 		List<TourActivity> activities = currentRoute.getTourActivities().getActivities();
 		for(int i=0;i<activities.size();i++){
-			ActivityInsertionCosts pickupAIC = calculate(insertionContext,prevAct,pickupShipment,activities.get(i),prevActEndTime);
+			ConstraintsStatus pickupShipmentConstraintStatus = hardActivityLevelConstraint.fulfilled(insertionContext, prevAct, pickupShipment, activities.get(i), prevActEndTime);
-			if(pickupAIC == null){
+			if(pickupShipmentConstraintStatus.equals(ConstraintsStatus.NOT_FULFILLED)){
 				double nextActArrTime = prevActEndTime + transportCosts.getTransportTime(prevAct.getLocationId(), activities.get(i).getLocationId(), prevActEndTime, newDriver, newVehicle);
-				prevActEndTime = CalcUtils.getActivityEndTime(nextActArrTime, activities.get(i));
+				prevActEndTime = CalculationUtils.getActivityEndTime(nextActArrTime, activities.get(i));
+				prevAct = activities.get(i);
 				continue;
 			}
+			else if(pickupShipmentConstraintStatus.equals(ConstraintsStatus.NOT_FULFILLED_BREAK)){
+				pickupShipmentLoopBroken = true;
+				break;
+			}
+			ActivityInsertionCosts pickupAIC = calculate(insertionContext,prevAct,pickupShipment,activities.get(i),prevActEndTime);
 			TourActivity prevAct_deliveryLoop = pickupShipment;
 			double shipmentPickupArrTime = prevActEndTime + transportCosts.getTransportTime(prevAct.getLocationId(), pickupShipment.getLocationId(), prevActEndTime, newDriver, newVehicle);
-			double shipmentPickupEndTime = CalcUtils.getActivityEndTime(shipmentPickupArrTime, pickupShipment);
+			double shipmentPickupEndTime = CalculationUtils.getActivityEndTime(shipmentPickupArrTime, pickupShipment);
 			double prevActEndTime_deliveryLoop = shipmentPickupEndTime;
+			boolean deliverShipmentLoopBroken = false;
 			//deliverShipmentLoop
 			for(int j=i;j<activities.size();j++){
-				ActivityInsertionCosts deliveryAIC = calculate(insertionContext,prevAct_deliveryLoop,deliveryShipment,activities.get(j),prevActEndTime_deliveryLoop);
+				ConstraintsStatus deliverShipmentConstraintStatus = hardActivityLevelConstraint.fulfilled(insertionContext, prevAct_deliveryLoop, deliverShipment, activities.get(j), prevActEndTime_deliveryLoop); 
-				if(deliveryAIC != null){
+				if(deliverShipmentConstraintStatus.equals(ConstraintsStatus.FULFILLED)){
+					ActivityInsertionCosts deliveryAIC = calculate(insertionContext,prevAct_deliveryLoop,deliverShipment,activities.get(j),prevActEndTime_deliveryLoop);
 					double totalActivityInsertionCosts = pickupAIC.getAdditionalCosts() + deliveryAIC.getAdditionalCosts();
 					if(totalActivityInsertionCosts < bestCost){
 						bestCost = totalActivityInsertionCosts;
@@ -133,13 +144,17 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 						deliveryInsertionIndex = j;
 					}
 				}
+				else if(deliverShipmentConstraintStatus.equals(ConstraintsStatus.NOT_FULFILLED_BREAK)){
+					deliverShipmentLoopBroken = true;
+					break;
+				}	
 				//update prevAct and endTime
 				double nextActArrTime = prevActEndTime_deliveryLoop + transportCosts.getTransportTime(prevAct_deliveryLoop.getLocationId(), activities.get(j).getLocationId(), prevActEndTime_deliveryLoop, newDriver, newVehicle);
-				prevActEndTime_deliveryLoop = CalcUtils.getActivityEndTime(nextActArrTime, activities.get(j));
+				prevActEndTime_deliveryLoop = CalculationUtils.getActivityEndTime(nextActArrTime, activities.get(j));
 				prevAct_deliveryLoop = activities.get(j);
 			}
-			//endInsertion
+			if(!deliverShipmentLoopBroken){ //check insertion between lastAct and endOfTour
-			ActivityInsertionCosts deliveryAIC = calculate(insertionContext,prevAct_deliveryLoop,deliveryShipment,end,prevActEndTime_deliveryLoop);
+				ActivityInsertionCosts deliveryAIC = calculate(insertionContext,prevAct_deliveryLoop,deliverShipment,end,prevActEndTime_deliveryLoop);
 				if(deliveryAIC != null){
 					double totalActivityInsertionCosts = pickupAIC.getAdditionalCosts() + deliveryAIC.getAdditionalCosts();
 					if(totalActivityInsertionCosts < bestCost){
@@ -148,21 +163,21 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 						deliveryInsertionIndex = activities.size();
 					}
 				}
+			}
 			//update prevAct and endTime
 			double nextActArrTime = prevActEndTime + transportCosts.getTransportTime(prevAct.getLocationId(), activities.get(i).getLocationId(), prevActEndTime, newDriver, newVehicle);
-			prevActEndTime = CalcUtils.getActivityEndTime(nextActArrTime, activities.get(i));
+			prevActEndTime = CalculationUtils.getActivityEndTime(nextActArrTime, activities.get(i));
 			prevAct = activities.get(i);
 		}
-		//endInsertion
+		if(!pickupShipmentLoopBroken){ //check insertion of pickupShipment and deliverShipment at just before tour ended
 			ActivityInsertionCosts pickupAIC = calculate(insertionContext,prevAct,pickupShipment,end,prevActEndTime);
 			if(pickupAIC != null){ //evaluate delivery
 				TourActivity prevAct_deliveryLoop = pickupShipment;
 				double shipmentPickupArrTime = prevActEndTime + transportCosts.getTransportTime(prevAct.getLocationId(), pickupShipment.getLocationId(), prevActEndTime, newDriver, newVehicle);
-			double shipmentPickupEndTime = CalcUtils.getActivityEndTime(shipmentPickupArrTime, pickupShipment);
+				double shipmentPickupEndTime = CalculationUtils.getActivityEndTime(shipmentPickupArrTime, pickupShipment);
 				double prevActEndTime_deliveryLoop = shipmentPickupEndTime;
 
-			ActivityInsertionCosts deliveryAIC = calculate(insertionContext,prevAct_deliveryLoop,deliveryShipment,end,prevActEndTime_deliveryLoop);
+				ActivityInsertionCosts deliveryAIC = calculate(insertionContext,prevAct_deliveryLoop,deliverShipment,end,prevActEndTime_deliveryLoop);
-			if(deliveryAIC != null){
 				double totalActivityInsertionCosts = pickupAIC.getAdditionalCosts() + deliveryAIC.getAdditionalCosts();
 				if(totalActivityInsertionCosts < bestCost){
 					bestCost = totalActivityInsertionCosts;
@@ -172,7 +187,7 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 			}
 		}
 		if(pickupInsertionIndex == InsertionData.NO_INDEX) {
-			return InsertionData.noInsertionFound();
+			return InsertionData.createEmptyInsertionData();
 		}
 		InsertionData insertionData = new InsertionData(bestCost, pickupInsertionIndex, deliveryInsertionIndex, newVehicle, newDriver);
 		insertionData.setVehicleDepartureTime(newVehicleDepartureTime);
@@ -180,7 +195,7 @@ final class ShipmentInsertionCalculator implements JobInsertionCalculator{
 	}
 
 	private ActivityInsertionCosts calculate(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double departureTimeAtPrevAct) {	
-		return activityInsertionCostsCalculator.calculate(iFacts, prevAct, nextAct, newAct, departureTimeAtPrevAct);
+		return activityInsertionCostsCalculator.getCosts(iFacts, prevAct, nextAct, newAct, departureTimeAtPrevAct);
 		
 	}
 }

jsprit-core/src/main/java/algorithms/StateFactory.java

@@ -0,0 +1,114 @@
+/*******************************************************************************
+ * Copyright (C) 2013  Stefan Schroeder
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ * Contributors:
+ *     Stefan Schroeder - initial API and implementation
+ ******************************************************************************/
+package algorithms;
+
+import java.util.Arrays;
+import java.util.List;
+
+import algorithms.StateGetter.State;
+import algorithms.StateGetter.StateId;
+import algorithms.StateManager.StateImpl;
+
+public class StateFactory {
+	
+	final static StateId MAXLOAD = new StateIdImpl("maxload");
+	
+	final static StateId LOAD = new StateIdImpl("load");
+	
+	final static StateId COSTS = new StateIdImpl("costs");
+	
+	final static StateId LOAD_AT_BEGINNING = new StateIdImpl("loadAtBeginning");
+	
+	final static StateId LOAD_AT_END = new StateIdImpl("loadAtEnd");
+	
+	final static StateId DURATION = new StateIdImpl("duration");
+	
+	final static StateId LATEST_OPERATION_START_TIME = new StateIdImpl("latestOST");
+	
+	final static StateId EARLIEST_OPERATION_START_TIME = new StateIdImpl("earliestOST");
+	
+	final static StateId FUTURE_PICKS = new StateIdImpl("futurePicks");
+	
+	final static StateId PAST_DELIVERIES = new StateIdImpl("pastDeliveries");
+	
+	final static List<String> reservedIds = Arrays.asList("maxload","load","costs","loadAtBeginning","loadAtEnd","duration","latestOST","earliestOST"
+			,"futurePicks","pastDeliveries");
+			
+	
+	public static StateId createId(String name){
+		if(reservedIds.contains(name)){ throwException(name); }
+		return new StateIdImpl(name);
+	}
+	
+	public static State createState(double value){
+		return new StateImpl(value);
+	}
+
+	private static void throwException(String name) {
+		throw new IllegalStateException("state-id with name '" + name + "' cannot be created. it is already reserved internally.");
+	}
+
+	
+	static class StateIdImpl implements StateId {
+		
+		/* (non-Javadoc)
+		 * @see java.lang.Object#hashCode()
+		 */
+		@Override
+		public int hashCode() {
+			final int prime = 31;
+			int result = 1;
+			result = prime * result + ((name == null) ? 0 : name.hashCode());
+			return result;
+		}
+
+		/* (non-Javadoc)
+		 * @see java.lang.Object#equals(java.lang.Object)
+		 */
+		@Override
+		public boolean equals(Object obj) {
+			if (this == obj)
+				return true;
+			if (obj == null)
+				return false;
+			if (getClass() != obj.getClass())
+				return false;
+			StateIdImpl other = (StateIdImpl) obj;
+			if (name == null) {
+				if (other.name != null)
+					return false;
+			} else if (!name.equals(other.name))
+				return false;
+			return true;
+		}
+
+		private String name;
+
+		public StateIdImpl(String name) {
+			super();
+			this.name = name;
+		}
+		
+		public String toString(){
+			return name;
+		}
+	}
+}

jsprit-core/src/main/java/algorithms/StateGetter.java

@@ -17,18 +17,22 @@
 package algorithms;
 
 import basics.route.TourActivity;
+import basics.route.VehicleRoute;
 
-class CalcUtils {
+public interface StateGetter {
 	
+	public interface StateId {
 		
-	/**
-	 * Calculates actEndTime assuming that activity can at earliest start at act.getTheoreticalEarliestOperationStartTime().
-	 * 
-	 * @param actArrTime
-	 * @param act
-	 * @return
-	 */
-	static double getActivityEndTime(double actArrTime, TourActivity act){
-		return Math.max(actArrTime, act.getTheoreticalEarliestOperationStartTime()) + act.getOperationTime();
 	}
+	
+	public interface State {
+		double toDouble();
+	}
+	
+
+	State getActivityState(TourActivity act, StateId stateId);
+
+	State getRouteState(VehicleRoute route, StateId stateId);
+
+
 }

jsprit-core/src/main/java/algorithms/StateManager.java

@@ -16,16 +16,42 @@
  ******************************************************************************/
 package algorithms;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import basics.Job;
+import basics.VehicleRoutingProblem;
+import basics.VehicleRoutingProblemSolution;
+import basics.algo.InsertionEndsListener;
+import basics.algo.InsertionListener;
+import basics.algo.InsertionListeners;
+import basics.algo.InsertionStartsListener;
+import basics.algo.IterationStartsListener;
+import basics.algo.JobInsertedListener;
+import basics.algo.RuinListener;
+import basics.algo.RuinListeners;
+import basics.route.ActivityVisitor;
+import basics.route.ReverseActivityVisitor;
+import basics.route.ReverseRouteActivityVisitor;
+import basics.route.RouteActivityVisitor;
+import basics.route.RouteVisitor;
 import basics.route.TourActivity;
 import basics.route.VehicleRoute;
 
-interface StateManager {
+public class StateManager implements StateGetter, IterationStartsListener, RuinListener, InsertionStartsListener, JobInsertedListener, InsertionEndsListener {
+
+	
+	
+	private interface States {
+		
+		State getState(StateId key);
 		
-	interface State {
-		double toDouble();
 	}
 	
-	class StateImpl implements State{
+	static class StateImpl implements State{
 		double state;
 
 		public StateImpl(double state) {
@@ -40,14 +66,225 @@ interface StateManager {
 		
 	}
 	
-	interface States {
+	private static class StatesImpl implements States{
 
-		State getState(String key);
+		private Map<StateId,State> states = new HashMap<StateId, State>();
+		
+		public void putState(StateId key, State state) {
+			states.put(key, state);
+		}
+
+		@Override
+		public State getState(StateId key) {
+			return states.get(key);
+		}
 
 	}
 	
-	State getActivityState(TourActivity act, String stateType);
+	private Map<VehicleRoute,States> vehicleRouteStates = new HashMap<VehicleRoute, States>();
 	
-	State getRouteState(VehicleRoute route, String stateType);
+	private Map<TourActivity,States> activityStates = new HashMap<TourActivity, States>();
 	
+	private RouteActivityVisitor routeActivityVisitor = new RouteActivityVisitor();
+	
+	private ReverseRouteActivityVisitor revRouteActivityVisitor = new ReverseRouteActivityVisitor();
+	
+	private Collection<RouteVisitor> routeVisitors = new ArrayList<RouteVisitor>();
+	
+	private RuinListeners ruinListeners = new RuinListeners();
+	
+	private InsertionListeners insertionListeners = new InsertionListeners();
+	
+	private Collection<StateUpdater> updaters = new ArrayList<StateUpdater>();
+	
+	private Map<StateId,State> defaultRouteStates = new HashMap<StateGetter.StateId, StateGetter.State>();
+	
+	private Map<StateId,State> defaultActivityStates = new HashMap<StateId, State>();
+	
+	public void addDefaultRouteState(StateId stateId, State defaultState){
+		defaultRouteStates.put(stateId, defaultState);
+	}
+	
+	public void addDefaultActivityState(StateId stateId, State defaultState){
+		defaultActivityStates.put(stateId, defaultState);
+	}
+	
+	public void clear(){
+		vehicleRouteStates.clear();
+		activityStates.clear();
+	}
+
+	@Override
+	public State getActivityState(TourActivity act, StateId stateId) {
+		if(!activityStates.containsKey(act)){
+			return getDefaultActState(stateId,act);
+		}
+		StatesImpl actStates = (StatesImpl) activityStates.get(act);
+		State state = actStates.getState(stateId);
+		if(state == null){
+			return getDefaultActState(stateId,act);
+		}
+		return state;
+	}
+	
+	public void putActivityState(TourActivity act, StateId stateId, State state){
+		if(!activityStates.containsKey(act)){
+			activityStates.put(act, new StatesImpl());
+		}
+		StatesImpl actStates = (StatesImpl) activityStates.get(act);
+		actStates.putState(stateId, state);
+	}
+	
+	
+	public void putRouteState(VehicleRoute route, StateId stateId, State state){
+		if(!vehicleRouteStates.containsKey(route)){
+			vehicleRouteStates.put(route, new StatesImpl());
+		}
+		StatesImpl routeStates = (StatesImpl) vehicleRouteStates.get(route);
+		routeStates.putState(stateId, state);
+	}
+
+	@Override
+	public State getRouteState(VehicleRoute route, StateId stateId) {
+		if(!vehicleRouteStates.containsKey(route)){
+			return getDefaultRouteState(stateId,route);
+		}
+		StatesImpl routeStates = (StatesImpl) vehicleRouteStates.get(route);
+		State state = routeStates.getState(stateId);
+		if(state == null){
+			return getDefaultRouteState(stateId, route);
+		}
+		return state;
+	}
+
+	/**
+	 * Adds state updater.
+	 * 
+	 * <p>Note that a state update occurs if route and/or activity states change, i.e. if jobs are removed
+	 * or inserted into a route. Thus here, it is assumed that a state updater is either of type InsertionListener, 
+	 * RuinListener, ActivityVisitor, ReverseActivityVisitor, RouteVisitor, ReverseRouteVisitor. 
+	 * 
+	 * <p>The following rule pertain for activity/route visitors:These visitors visits all activities/route in a route subsequently in two cases. First, if insertionStart (after ruinStrategies have removed activities from routes)
+	 * and, second, if a job has been inserted and thus if a route has changed.
+	 *  
+	 * @param updater
+	 */
+	public void addStateUpdater(StateUpdater updater){
+		if(updater instanceof ActivityVisitor) addActivityVisitor((ActivityVisitor) updater);
+		if(updater instanceof ReverseActivityVisitor) addActivityVisitor((ReverseActivityVisitor)updater);
+		if(updater instanceof RouteVisitor) addRouteVisitor((RouteVisitor) updater);
+		if(updater instanceof InsertionListener) addListener((InsertionListener) updater);
+		if(updater instanceof RuinListener) addListener((RuinListener) updater);
+		updaters.add(updater);
+	}
+	
+	Collection<StateUpdater> getStateUpdaters(){
+		return Collections.unmodifiableCollection(updaters);
+	}
+	
+	/**
+	 * Adds an activityVisitor.
+	 * <p>This visitor visits all activities in a route subsequently in two cases. First, if insertionStart (after ruinStrategies have removed activities from routes)
+	 * and, second, if a job has been inserted and thus if a route has changed. 
+	 * 
+	 * @param activityVistor
+	 */
+	 void addActivityVisitor(ActivityVisitor activityVistor){
+		routeActivityVisitor.addActivityVisitor(activityVistor);
+	}
+
+	/**
+	 * Adds an reverseActivityVisitor.
+	 * <p>This reverseVisitor visits all activities in a route subsequently (starting from the end of the route) in two cases. First, if insertionStart (after ruinStrategies have removed activities from routes)
+	 * and, second, if a job has been inserted and thus if a route has changed. 
+	 * 
+	 * @param reverseActivityVistor
+	 */
+	 void addActivityVisitor(ReverseActivityVisitor activityVistor){
+		revRouteActivityVisitor.addActivityVisitor(activityVistor);
+	}
+
+	 void addRouteVisitor(RouteVisitor routeVisitor){
+		routeVisitors.add(routeVisitor);
+	}
+
+	void addListener(RuinListener ruinListener){
+		ruinListeners.addListener(ruinListener);
+	}
+
+	void removeListener(RuinListener ruinListener){
+		ruinListeners.removeListener(ruinListener);
+	}
+
+	void addListener(InsertionListener insertionListener){
+		insertionListeners.addListener(insertionListener);
+	}
+
+	void removeListener(InsertionListener insertionListener){
+		insertionListeners.removeListener(insertionListener);
+	}
+
+	private State getDefaultActState(StateId stateId, TourActivity act){
+		if(stateId.equals(StateFactory.LOAD)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.COSTS)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.DURATION)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.EARLIEST_OPERATION_START_TIME)) return new StateImpl(act.getTheoreticalEarliestOperationStartTime());
+		if(stateId.equals(StateFactory.LATEST_OPERATION_START_TIME)) return new StateImpl(act.getTheoreticalLatestOperationStartTime());
+		if(stateId.equals(StateFactory.FUTURE_PICKS)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.PAST_DELIVERIES)) return new StateImpl(0);
+		return null;
+	}
+	
+	private State getDefaultRouteState(StateId stateId, VehicleRoute route){
+		if(stateId.equals(StateFactory.MAXLOAD)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.LOAD)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.LOAD_AT_END)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.LOAD_AT_BEGINNING)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.COSTS)) return new StateImpl(0);
+		if(stateId.equals(StateFactory.DURATION)) return new StateImpl(0);
+		return null;
+	}
+
+	@Override
+	public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
+		insertionListeners.jobInserted(job2insert, inRoute, additionalCosts, additionalTime);
+		for(RouteVisitor v : routeVisitors){ v.visit(inRoute); }
+		routeActivityVisitor.visit(inRoute);
+		revRouteActivityVisitor.visit(inRoute);
+	}
+
+	@Override
+	public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes,Collection<Job> unassignedJobs) {
+		insertionListeners.insertionStarts(vehicleRoutes, unassignedJobs);
+		for(VehicleRoute route : vehicleRoutes){ 
+			for(RouteVisitor v : routeVisitors){ v.visit(route); }
+			routeActivityVisitor.visit(route);
+			revRouteActivityVisitor.visit(route);
+		}
+	}
+	
+	@Override
+	public void informIterationStarts(int i, VehicleRoutingProblem problem, Collection<VehicleRoutingProblemSolution> solutions) {
+		clear();
+	}
+
+	@Override
+	public void ruinStarts(Collection<VehicleRoute> routes) {
+		ruinListeners.ruinStarts(routes);
+	}
+
+	@Override
+	public void ruinEnds(Collection<VehicleRoute> routes, Collection<Job> unassignedJobs) {
+		ruinListeners.ruinEnds(routes, unassignedJobs);		
+	}
+
+	@Override
+	public void removed(Job job, VehicleRoute fromRoute) {
+		ruinListeners.removed(job, fromRoute);
+	}
+
+	@Override
+	public void informInsertionEnds(Collection<VehicleRoute> vehicleRoutes) {
+		insertionListeners.insertionEnds(vehicleRoutes);
+	}
 }

jsprit-core/src/main/java/algorithms/StateManagerImpl.java

@@ -1,151 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Map;
-
-import basics.Job;
-import basics.algo.InsertionStartsListener;
-import basics.algo.JobInsertedListener;
-import basics.route.TourActivity;
-import basics.route.VehicleRoute;
-
-class StateManagerImpl implements StateManager, InsertionStartsListener, JobInsertedListener {
-
-	static class StatesImpl implements States{
-
-		private Map<String,State> states = new HashMap<String, State>();
-		
-		public void putState(String key, State state) {
-			states.put(key, state);
-		}
-
-		@Override
-		public State getState(String key) {
-			return states.get(key);
-		}
-
-	}
-	
-	private Map<VehicleRoute,States> vehicleRouteStates = new HashMap<VehicleRoute, StateManager.States>();
-	
-	private Map<TourActivity,States> activityStates = new HashMap<TourActivity, StateManager.States>();
-	
-	private RouteActivityVisitor routeActivityVisitor = new RouteActivityVisitor();
-	
-	private ReverseRouteActivityVisitor revRouteActivityVisitor = new ReverseRouteActivityVisitor();
-	
-	private Collection<RouteVisitor> routeVisitors = new ArrayList<RouteVisitor>();
-	
-	public void clear(){
-		vehicleRouteStates.clear();
-		activityStates.clear();
-	}
-
-	@Override
-	public State getActivityState(TourActivity act, String stateType) {
-		if(!activityStates.containsKey(act)){
-			return getDefaultActState(stateType,act);
-		}
-		StatesImpl actStates = (StatesImpl) activityStates.get(act);
-		State state = actStates.getState(stateType);
-		if(state == null){
-			return getDefaultActState(stateType,act);
-		}
-		return state;
-	}
-	
-	public void putActivityState(TourActivity act, String stateType, State state){
-		if(!activityStates.containsKey(act)){
-			activityStates.put(act, new StatesImpl());
-		}
-		StatesImpl actStates = (StatesImpl) activityStates.get(act);
-		actStates.putState(stateType, state);
-	}
-	
-	
-	private State getDefaultActState(String stateType, TourActivity act){
-		if(stateType.equals(StateTypes.LOAD)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.COSTS)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.DURATION)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.EARLIEST_OPERATION_START_TIME)) return new StateImpl(act.getTheoreticalEarliestOperationStartTime());
-		if(stateType.equals(StateTypes.LATEST_OPERATION_START_TIME)) return new StateImpl(act.getTheoreticalLatestOperationStartTime());
-		if(stateType.equals(StateTypes.FUTURE_PICKS)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.PAST_DELIVERIES)) return new StateImpl(0);
-		return null;
-	}
-	
-	private State getDefaultRouteState(String stateType, VehicleRoute route){
-		if(stateType.equals(StateTypes.LOAD)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.LOAD_AT_DEPOT)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.COSTS)) return new StateImpl(0);
-		if(stateType.equals(StateTypes.DURATION)) return new StateImpl(0);
-		return null;
-	}
-
-	@Override
-	public State getRouteState(VehicleRoute route, String stateType) {
-		if(!vehicleRouteStates.containsKey(route)){
-			return getDefaultRouteState(stateType,route);
-		}
-		StatesImpl routeStates = (StatesImpl) vehicleRouteStates.get(route);
-		State state = routeStates.getState(stateType);
-		if(state == null){
-			return getDefaultRouteState(stateType, route);
-		}
-		return state;
-	}
-	
-	public void putRouteState(VehicleRoute route, String stateType, State state){
-		if(!vehicleRouteStates.containsKey(route)){
-			vehicleRouteStates.put(route, new StatesImpl());
-		}
-		StatesImpl routeStates = (StatesImpl) vehicleRouteStates.get(route);
-		routeStates.putState(stateType, state);
-	}
-
-	@Override
-	public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
-		for(RouteVisitor v : routeVisitors){ v.visit(inRoute); }
-		routeActivityVisitor.visit(inRoute);
-		revRouteActivityVisitor.visit(inRoute);
-	}
-
-	@Override
-	public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes,Collection<Job> unassignedJobs) {
-		for(VehicleRoute route : vehicleRoutes){ 
-			for(RouteVisitor v : routeVisitors){ v.visit(route); }
-			routeActivityVisitor.visit(route);
-			revRouteActivityVisitor.visit(route);
-		}
-	}
-	
-	public void addActivityVisitor(ActivityVisitor activityVistor){
-		routeActivityVisitor.addActivityVisitor(activityVistor);
-	}
-	
-	public void addActivityVisitor(ReverseActivityVisitor activityVistor){
-		revRouteActivityVisitor.addActivityVisitor(activityVistor);
-	}
-
-	public void addRouteVisitor(RouteVisitor routeVisitor){
-		routeVisitors.add(routeVisitor);
-	}
-}

jsprit-core/src/main/java/algorithms/StateUpdater.java

@@ -0,0 +1,5 @@
+package algorithms;
+
+public interface StateUpdater {
+
+}

jsprit-core/src/main/java/algorithms/StateUpdates.java

@@ -1,633 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import java.util.ArrayList;
-import java.util.Collection;
-
-import org.apache.log4j.Logger;
-
-import algorithms.RuinStrategy.RuinListener;
-import algorithms.StateManager.StateImpl;
-import basics.Delivery;
-import basics.Job;
-import basics.Pickup;
-import basics.Service;
-import basics.VehicleRoutingProblem;
-import basics.VehicleRoutingProblemSolution;
-import basics.algo.InsertionEndsListener;
-import basics.algo.InsertionStartsListener;
-import basics.algo.IterationStartsListener;
-import basics.algo.JobInsertedListener;
-import basics.costs.ForwardTransportCost;
-import basics.costs.ForwardTransportTime;
-import basics.costs.VehicleRoutingActivityCosts;
-import basics.costs.VehicleRoutingTransportCosts;
-import basics.route.DeliveryActivity;
-import basics.route.PickupActivity;
-import basics.route.ServiceActivity;
-import basics.route.TourActivity;
-import basics.route.Vehicle;
-import basics.route.VehicleRoute;
-import basics.route.VehicleType;
-
-class StateUpdates {
-	
-	static class UpdateCostsAtRouteLevel implements JobInsertedListener, InsertionStartsListener, InsertionEndsListener{
-		
-		private StateManagerImpl states;
-		
-		private VehicleRoutingTransportCosts tpCosts;
-		
-		private VehicleRoutingActivityCosts actCosts;
-		
-		public UpdateCostsAtRouteLevel(StateManagerImpl states, VehicleRoutingTransportCosts tpCosts, VehicleRoutingActivityCosts actCosts) {
-			super();
-			this.states = states;
-			this.tpCosts = tpCosts;
-			this.actCosts = actCosts;
-		}
-
-		@Override
-		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
-//			inRoute.getVehicleRouteCostCalculator().addTransportCost(additionalCosts);
-			double oldCosts = states.getRouteState(inRoute, StateTypes.COSTS).toDouble();
-			oldCosts += additionalCosts;
-			states.putRouteState(inRoute, StateTypes.COSTS, new StateImpl(oldCosts));
-		}
-
-		@Override
-		public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs) {
-			RouteActivityVisitor forwardInTime = new RouteActivityVisitor();
-			forwardInTime.addActivityVisitor(new UpdateCostsAtAllLevels(actCosts, tpCosts, states));
-			for(VehicleRoute route : vehicleRoutes){
-				forwardInTime.visit(route);
-			}
-			
-		}
-
-		@Override
-		public void informInsertionEnds(Collection<VehicleRoute> vehicleRoutes) {
-			
-//			IterateRouteForwardInTime forwardInTime = new IterateRouteForwardInTime(tpCosts);
-//			forwardInTime.addListener(new UpdateCostsAtAllLevels(actCosts, tpCosts, states));
-//			for(VehicleRoute route : vehicleRoutes){
-//				if(route.isEmpty()) continue;
-//				route.getVehicleRouteCostCalculator().reset();
-//				route.getVehicleRouteCostCalculator().addOtherCost(states.getRouteState(route, StateTypes.COSTS).toDouble());
-//				route.getVehicleRouteCostCalculator().price(route.getVehicle());
-//				forwardInTime.iterate(route);
-//			}
-			
-		}
-
-	}
-
-	static class UpdateActivityTimes implements ActivityVisitor{
-
-		private Logger log = Logger.getLogger(UpdateActivityTimes.class);
-		
-		private ActivityTimeTracker timeTracker;
-		
-		private VehicleRoute route;
-		
-		public UpdateActivityTimes(ForwardTransportTime transportTime) {
-			super();
-			timeTracker = new ActivityTimeTracker(transportTime);
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			timeTracker.begin(route);
-			this.route = route;
-			route.getStart().setEndTime(timeTracker.getActEndTime());
-		}
-
-		@Override
-		public void visit(TourActivity activity) {
-			timeTracker.visit(activity);
-			activity.setArrTime(timeTracker.getActArrTime());
-			activity.setEndTime(timeTracker.getActEndTime());
-		}
-
-		@Override
-		public void finish() {
-			timeTracker.finish();
-			route.getEnd().setArrTime(timeTracker.getActArrTime());
-		}
-
-	}
-
-	static class UpdateCostsAtAllLevels implements ActivityVisitor{
-
-		private static Logger log = Logger.getLogger(UpdateCostsAtAllLevels.class);
-		
-		private VehicleRoutingActivityCosts activityCost;
-
-		private ForwardTransportCost transportCost;
-		
-		private StateManagerImpl states;
-		
-		private double totalOperationCost = 0.0;
-		
-		private VehicleRoute vehicleRoute = null;
-		
-		private TourActivity prevAct = null;
-		
-		private double startTimeAtPrevAct = 0.0;
-		
-		private ActivityTimeTracker timeTracker;
-		
-		public UpdateCostsAtAllLevels(VehicleRoutingActivityCosts activityCost, VehicleRoutingTransportCosts transportCost, StateManagerImpl states) {
-			super();
-			this.activityCost = activityCost;
-			this.transportCost = transportCost;
-			this.states = states;
-			timeTracker = new ActivityTimeTracker(transportCost);
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			vehicleRoute = route;
-			vehicleRoute.getVehicleRouteCostCalculator().reset();
-			timeTracker.begin(route);
-			prevAct = route.getStart();
-			startTimeAtPrevAct = timeTracker.getActEndTime();
-		}
-
-		@Override
-		public void visit(TourActivity act) {
-			timeTracker.visit(act);
-			
-			double transportCost = this.transportCost.getTransportCost(prevAct.getLocationId(), act.getLocationId(), startTimeAtPrevAct, vehicleRoute.getDriver(), vehicleRoute.getVehicle());
-			double actCost = activityCost.getActivityCost(act, timeTracker.getActArrTime(), vehicleRoute.getDriver(), vehicleRoute.getVehicle());
-
-			vehicleRoute.getVehicleRouteCostCalculator().addTransportCost(transportCost);
-			vehicleRoute.getVehicleRouteCostCalculator().addActivityCost(actCost);
-			
-			totalOperationCost += transportCost;
-			totalOperationCost += actCost;
-
-			states.putActivityState(act, StateTypes.COSTS, new StateImpl(totalOperationCost));
-
-			prevAct = act;
-			startTimeAtPrevAct = timeTracker.getActEndTime();
-		}
-
-		@Override
-		public void finish() {
-			timeTracker.finish();
-			double transportCost = this.transportCost.getTransportCost(prevAct.getLocationId(), vehicleRoute.getEnd().getLocationId(), startTimeAtPrevAct, vehicleRoute.getDriver(), vehicleRoute.getVehicle());
-			double actCost = activityCost.getActivityCost(vehicleRoute.getEnd(), timeTracker.getActEndTime(), vehicleRoute.getDriver(), vehicleRoute.getVehicle());
-			
-			vehicleRoute.getVehicleRouteCostCalculator().addTransportCost(transportCost);
-			vehicleRoute.getVehicleRouteCostCalculator().addActivityCost(actCost);
-			
-			totalOperationCost += transportCost;
-			totalOperationCost += actCost;
-//			totalOperationCost += getFixCosts();
-			
-			states.putRouteState(vehicleRoute, StateTypes.COSTS, new StateImpl(totalOperationCost));
-			
-//			this is rather strange and likely to change
-			vehicleRoute.getVehicleRouteCostCalculator().price(vehicleRoute.getDriver());
-			vehicleRoute.getVehicleRouteCostCalculator().price(vehicleRoute.getVehicle());
-			vehicleRoute.getVehicleRouteCostCalculator().finish();
-			
-			startTimeAtPrevAct = 0.0;
-			prevAct = null;
-			vehicleRoute = null;
-			totalOperationCost = 0.0;
-		}
-
-		private double getFixCosts() {
-			Vehicle vehicle = vehicleRoute.getVehicle();
-			if(vehicle == null) return 0.0;
-			VehicleType type = vehicle.getType();
-			if(type == null) return 0.0;
-			return type.getVehicleCostParams().fix;
-		}
-
-	}
-
-	static class UpdateEarliestStartTimeWindowAtActLocations implements ActivityVisitor{
-
-		private StateManagerImpl states;
-		
-		private ActivityTimeTracker timeTracker;
-		
-		public UpdateEarliestStartTimeWindowAtActLocations(StateManagerImpl states, VehicleRoutingTransportCosts transportCosts) {
-			super();
-			this.states = states;
-			timeTracker = new ActivityTimeTracker(transportCosts);
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			timeTracker.begin(route);
-		}
-
-		@Override
-		public void visit(TourActivity activity) {
-			timeTracker.visit(activity);
-			states.putActivityState(activity, StateTypes.EARLIEST_OPERATION_START_TIME, new StateImpl(Math.max(timeTracker.getActArrTime(), activity.getTheoreticalEarliestOperationStartTime())));
-			
-		}
-
-		@Override
-		public void finish() {}
-
-	}
-
-	static class UpdateLatestOperationStartTimeAtActLocations implements ReverseActivityVisitor{
-
-		private static Logger log = Logger.getLogger(UpdateLatestOperationStartTimeAtActLocations.class);
-		
-		private StateManagerImpl states;
-		
-		private VehicleRoute route;
-		
-		private VehicleRoutingTransportCosts transportCosts;
-		
-		private double latestArrTimeAtPrevAct;
-		
-		private TourActivity prevAct;
-		
-		public UpdateLatestOperationStartTimeAtActLocations(StateManagerImpl states, VehicleRoutingTransportCosts tpCosts) {
-			super();
-			this.states = states;
-			this.transportCosts = tpCosts;
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			this.route = route;
-			latestArrTimeAtPrevAct = route.getEnd().getTheoreticalLatestOperationStartTime();
-			prevAct = route.getEnd();
-		}
-
-		@Override
-		public void visit(TourActivity activity) {
-			double potentialLatestArrivalTimeAtCurrAct = latestArrTimeAtPrevAct - transportCosts.getBackwardTransportTime(activity.getLocationId(), prevAct.getLocationId(), latestArrTimeAtPrevAct, route.getDriver(),route.getVehicle()) - activity.getOperationTime();
-			double latestArrivalTime = Math.min(activity.getTheoreticalLatestOperationStartTime(), potentialLatestArrivalTimeAtCurrAct);
-			
-			states.putActivityState(activity, StateTypes.LATEST_OPERATION_START_TIME, new StateImpl(latestArrivalTime));
-			
-			latestArrTimeAtPrevAct = latestArrivalTime;
-			prevAct = activity;
-		}
-
-		@Override
-		public void finish() {}
-	}
-
-	static class UpdateLoadAtAllLevels implements ActivityVisitor{
-
-		private double load = 0.0;
-		
-		private StateManagerImpl states;
-		
-		private VehicleRoute vehicleRoute;
-		
-		public UpdateLoadAtAllLevels(StateManagerImpl states) {
-			super();
-			this.states = states;
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			vehicleRoute = route;
-		}
-
-		@Override
-		public void visit(TourActivity activity) {
-			load += (double)activity.getCapacityDemand();
-			states.putActivityState(activity, StateTypes.LOAD, new StateImpl(load));
-		}
-
-		@Override
-		public void finish() {
-			states.putRouteState(vehicleRoute, StateTypes.LOAD, new StateImpl(load));
-			load=0;
-			vehicleRoute = null;
-		}
-
-	}
-
-	static class UpdateLoadAtRouteLevel implements JobInsertedListener, InsertionStartsListener{
-
-		private StateManagerImpl states;
-		
-		public UpdateLoadAtRouteLevel(StateManagerImpl states) {
-			super();
-			this.states = states;
-		}
-
-		@Override
-		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
-			if(!(job2insert instanceof Service)){
-				return;
-			}
-			double oldLoad = states.getRouteState(inRoute, StateTypes.LOAD).toDouble();
-			states.putRouteState(inRoute, StateTypes.LOAD, new StateImpl(oldLoad + job2insert.getCapacityDemand()));
-		}
-
-		@Override
-		public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs) {
-			for(VehicleRoute route : vehicleRoutes){
-				int load = 0;
-				for(Job j : route.getTourActivities().getJobs()){
-					load += j.getCapacityDemand();
-				}
-				states.putRouteState(route, StateTypes.LOAD, new StateImpl(load));
-			}
-			
-		}
-
-	}
-
-	static class UpdateStates implements JobInsertedListener, RuinListener{
-
-		private RouteActivityVisitor routeActivityVisitor;
-		
-		private ReverseRouteActivityVisitor revRouteActivityVisitor;
-		
-		public UpdateStates(StateManagerImpl states, VehicleRoutingTransportCosts routingCosts, VehicleRoutingActivityCosts activityCosts) {
-			routeActivityVisitor = new RouteActivityVisitor();
-			routeActivityVisitor.addActivityVisitor(new UpdateActivityTimes(routingCosts));
-			routeActivityVisitor.addActivityVisitor(new UpdateCostsAtAllLevels(activityCosts, routingCosts, states));
-			routeActivityVisitor.addActivityVisitor(new UpdateLoadAtAllLevels(states));
-			
-			revRouteActivityVisitor = new ReverseRouteActivityVisitor();
-			revRouteActivityVisitor.addActivityVisitor(new UpdateLatestOperationStartTimeAtActLocations(states, routingCosts));
-		
-		}
-		
-		public void update(VehicleRoute route){
-			routeActivityVisitor.visit(route);
-			revRouteActivityVisitor.visit(route);
-		}
-
-		@Override
-		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
-			routeActivityVisitor.visit(inRoute);
-			revRouteActivityVisitor.visit(inRoute);
-		}
-
-		@Override
-		public void ruinStarts(Collection<VehicleRoute> routes) {}
-
-		@Override
-		public void ruinEnds(Collection<VehicleRoute> routes,Collection<Job> unassignedJobs) {
-			for(VehicleRoute route : routes) {
-				routeActivityVisitor.visit(route);
-				revRouteActivityVisitor.visit(route);
-			}
-		}
-
-		@Override
-		public void removed(Job job, VehicleRoute fromRoute) {}
-
-	}
-
-	static class UpdateFuturePickupsAtActivityLevel implements ReverseActivityVisitor {
-		private StateManagerImpl stateManager;
-		private int futurePicks = 0;
-		private VehicleRoute route;
-		
-		public UpdateFuturePickupsAtActivityLevel(StateManagerImpl stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			this.route = route;
-		}
-
-		@Override
-		public void visit(TourActivity act) {
-			stateManager.putActivityState(act, StateTypes.FUTURE_PICKS, new StateImpl(futurePicks));
-			if(act instanceof PickupActivity || act instanceof ServiceActivity){
-				futurePicks += act.getCapacityDemand();
-			}
-			assert futurePicks <= route.getVehicle().getCapacity() : "sum of pickups must not be > vehicleCap";
-			assert futurePicks >= 0 : "sum of pickups must not < 0";
-		}
-
-		@Override
-		public void finish() {
-			futurePicks = 0;
-			route = null;
-		}
-	}
-
-	static class UpdateOccuredDeliveriesAtActivityLevel implements ActivityVisitor {
-		private StateManagerImpl stateManager;
-		private int deliveries = 0; 
-		private VehicleRoute route;
-		
-		public UpdateOccuredDeliveriesAtActivityLevel(StateManagerImpl stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public void begin(VehicleRoute route) {
-			this.route = route; 
-		}
-
-		@Override
-		public void visit(TourActivity act) {
-			if(act instanceof DeliveryActivity){
-				deliveries += Math.abs(act.getCapacityDemand());
-			}
-			stateManager.putActivityState(act, StateTypes.PAST_DELIVERIES, new StateImpl(deliveries));
-			assert deliveries >= 0 : "deliveries < 0";
-			assert deliveries <= route.getVehicle().getCapacity() : "deliveries > vehicleCap";
-		}
-
-		@Override
-		public void finish() {
-			deliveries = 0;
-			route = null;
-		}
-	}
-	
-	/**
-	 * Updates load at activity level. Note that this assumed that StateTypes.LOAD_AT_DEPOT is already updated, i.e. it starts by setting loadAtDepot to StateTypes.LOAD_AT_DEPOT.
-	 * If StateTypes.LOAD_AT_DEPOT is not set, it starts with 0 load at depot.
-	 *  
-	 * @author stefan
-	 *
-	 */
-	static class UpdateLoadAtActivityLevel implements ActivityVisitor {
-		private StateManagerImpl stateManager;
-		private int currentLoad = 0;
-		private VehicleRoute route;
-		
-		public UpdateLoadAtActivityLevel(StateManagerImpl stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-		
-		@Override
-		public void begin(VehicleRoute route) {
-			currentLoad = (int) stateManager.getRouteState(route, StateTypes.LOAD_AT_DEPOT).toDouble();
-			this.route = route;
-		}
-
-		@Override
-		public void visit(TourActivity act) {
-			currentLoad += act.getCapacityDemand();
-			stateManager.putActivityState(act, StateTypes.LOAD, new StateImpl(currentLoad));
-			assert currentLoad <= route.getVehicle().getCapacity() : "currentLoad at activity must not be > vehicleCapacity";
-			assert currentLoad >= 0 : "currentLoad at act must not be < 0";
-		}
-
-		@Override
-		public void finish() {
-			currentLoad = 0;
-		}
-	}
-	
-	static class ResetStateManager implements IterationStartsListener {
-
-		private StateManagerImpl stateManager;
-		
-		public ResetStateManager(StateManagerImpl stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public void informIterationStarts(int i, VehicleRoutingProblem problem, Collection<VehicleRoutingProblemSolution> solutions) {
-			stateManager.clear();
-		}
-	}
-	
-	static interface InsertionStarts {
-		
-		void insertionStarts(VehicleRoute route);
-		
-	}
-	
-	static class UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts implements InsertionStarts {
-
-		private StateManagerImpl stateManager;
-		
-		public UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts(StateManagerImpl stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public void insertionStarts(VehicleRoute route) {
-			int loadAtDepot = 0;
-			int loadAtEnd = 0;
-			for(Job j : route.getTourActivities().getJobs()){
-				if(j instanceof Delivery){
-					loadAtDepot += j.getCapacityDemand();
-				}
-				else if(j instanceof Pickup || j instanceof Service){
-					loadAtEnd += j.getCapacityDemand();
-				}
-			}
-			stateManager.putRouteState(route, StateTypes.LOAD_AT_DEPOT, new StateImpl(loadAtDepot));
-			stateManager.putRouteState(route, StateTypes.LOAD, new StateImpl(loadAtEnd));
-		}
-		
-	}
-	
-	static class UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted implements JobInsertedListener {
-
-		private StateManagerImpl stateManager;
-		
-		public UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted(StateManagerImpl stateManager) {
-			super();
-			this.stateManager = stateManager;
-		}
-
-		@Override
-		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
-			if(job2insert instanceof Delivery){
-				int loadAtDepot = (int) stateManager.getRouteState(inRoute, StateTypes.LOAD_AT_DEPOT).toDouble();
-//				log.info("loadAtDepot="+loadAtDepot);
-				stateManager.putRouteState(inRoute, StateTypes.LOAD_AT_DEPOT, new StateImpl(loadAtDepot + job2insert.getCapacityDemand()));
-			}
-			else if(job2insert instanceof Pickup || job2insert instanceof Service){
-				int loadAtEnd = (int) stateManager.getRouteState(inRoute, StateTypes.LOAD).toDouble();
-//				log.info("loadAtEnd="+loadAtEnd);
-				stateManager.putRouteState(inRoute, StateTypes.LOAD, new StateImpl(loadAtEnd + job2insert.getCapacityDemand()));
-			}
-		}
-		
-	}
-	
-	static class UpdateRouteStatesOnceTheRouteHasBeenChanged implements InsertionStartsListener, JobInsertedListener {
-
-		private RouteActivityVisitor forwardInTimeIterator;
-		
-		private ReverseRouteActivityVisitor backwardInTimeIterator;
-		
-		private Collection<InsertionStarts> insertionStartsListeners;
-	
-		private Collection<JobInsertedListener> jobInsertionListeners;
-		
-		public UpdateRouteStatesOnceTheRouteHasBeenChanged(VehicleRoutingTransportCosts routingCosts) {
-			forwardInTimeIterator = new RouteActivityVisitor();
-			backwardInTimeIterator = new ReverseRouteActivityVisitor();
-			insertionStartsListeners = new ArrayList<InsertionStarts>();
-			jobInsertionListeners = new ArrayList<JobInsertedListener>();
-		}
-		
-		void addVisitor(ActivityVisitor vis){
-			forwardInTimeIterator.addActivityVisitor(vis);
-		}
-		
-		void addVisitor(ReverseActivityVisitor revVis){
-			backwardInTimeIterator.addActivityVisitor(revVis);
-		}
-		
-		void addInsertionStartsListener(InsertionStarts insertionStartListener){
-			insertionStartsListeners.add(insertionStartListener);
-		}
-		
-		void addJobInsertedListener(JobInsertedListener jobInsertedListener){
-			jobInsertionListeners.add(jobInsertedListener);
-		}
-
-		@Override
-		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
-			for(JobInsertedListener l : jobInsertionListeners){ l.informJobInserted(job2insert, inRoute, additionalCosts, additionalTime); }
-			forwardInTimeIterator.visit(inRoute);
-			backwardInTimeIterator.visit(inRoute);
-		}
-
-		@Override
-		public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs) {
-			for(VehicleRoute route : vehicleRoutes){
-				for(InsertionStarts insertionsStartsHandler : insertionStartsListeners){
-					insertionsStartsHandler.insertionStarts(route);
-				}
-				forwardInTimeIterator.visit(route);
-				backwardInTimeIterator.visit(route);
-			}
-		}
-		
-	}
-}

jsprit-core/src/main/java/algorithms/StateUtils.java

@@ -0,0 +1,24 @@
+package algorithms;
+
+import basics.VehicleRoutingProblem;
+
+class StateUtils {
+	
+	public static void addCoreStateUpdaters(VehicleRoutingProblem vrp, StateManager stateManager){
+		stateManager.addListener(new UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts(stateManager));
+		stateManager.addListener(new UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted(stateManager));
+	
+		stateManager.addActivityVisitor(new UpdateActivityTimes(vrp.getTransportCosts()));
+		stateManager.addActivityVisitor(new UpdateLoadAtActivityLevel(stateManager));
+		
+		stateManager.addActivityVisitor(new UpdateCostsAtAllLevels(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager));
+		
+		stateManager.addActivityVisitor(new UpdateOccuredDeliveriesAtActivityLevel(stateManager));
+		
+		stateManager.addActivityVisitor(new UpdateLatestOperationStartTimeAtActLocations(stateManager, vrp.getTransportCosts()));
+		
+		stateManager.addActivityVisitor(new UpdateFuturePickupsAtActivityLevel(stateManager));
+		
+	}
+
+}

jsprit-core/src/main/java/algorithms/UpdateActivityTimes.java

@@ -0,0 +1,65 @@
+package algorithms;
+
+import org.apache.log4j.Logger;
+
+import util.ActivityTimeTracker;
+
+import basics.costs.ForwardTransportTime;
+import basics.route.ActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+/**
+ * Updates arrival and end times of activities. 
+ * 
+ * <p>Note that this modifies arrTime and endTime of each activity in a route.
+ * 
+ * @author stefan
+ *
+ */
+class UpdateActivityTimes implements ActivityVisitor, StateUpdater{
+
+	private Logger log = Logger.getLogger(UpdateActivityTimes.class);
+	
+	private ActivityTimeTracker timeTracker;
+	
+	private VehicleRoute route;
+	
+	/**
+	 * Updates arrival and end times of activities. 
+	 * 
+	 * <p>Note that this modifies arrTime and endTime of each activity in a route.
+	 * 
+	 * <p>ArrTimes and EndTimes can be retrieved by <br>
+	 * <code>activity.getArrTime()</code> and
+	 * <code>activity.getEndTime()</code>
+	 * 
+	 * @author stefan
+	 *
+	 */
+	public UpdateActivityTimes(ForwardTransportTime transportTime) {
+		super();
+		timeTracker = new ActivityTimeTracker(transportTime);
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		timeTracker.begin(route);
+		this.route = route;
+		route.getStart().setEndTime(timeTracker.getActEndTime());
+	}
+
+	@Override
+	public void visit(TourActivity activity) {
+		timeTracker.visit(activity);
+		activity.setArrTime(timeTracker.getActArrTime());
+		activity.setEndTime(timeTracker.getActEndTime());
+	}
+
+	@Override
+	public void finish() {
+		timeTracker.finish();
+		route.getEnd().setArrTime(timeTracker.getActArrTime());
+	}
+
+}

jsprit-core/src/main/java/algorithms/UpdateCostsAtAllLevels.java

@@ -0,0 +1,126 @@
+package algorithms;
+
+import org.apache.log4j.Logger;
+
+import util.ActivityTimeTracker;
+
+import algorithms.StateManager.StateImpl;
+import basics.costs.ForwardTransportCost;
+import basics.costs.VehicleRoutingActivityCosts;
+import basics.costs.VehicleRoutingTransportCosts;
+import basics.route.ActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.Vehicle;
+import basics.route.VehicleRoute;
+
+/**
+ * Updates total costs (i.e. transport and activity costs) at route and activity level.
+ * 
+ * <p>Thus it modifies <code>stateManager.getRouteState(route, StateTypes.COSTS)</code> and <br>
+ * <code>stateManager.getActivityState(activity, StateTypes.COSTS)</code>
+ * 
+ * 
+ * @param activityCost
+ * @param transportCost
+ * @param states
+ */
+class UpdateCostsAtAllLevels implements ActivityVisitor,StateUpdater{
+
+	private static Logger log = Logger.getLogger(UpdateCostsAtAllLevels.class);
+	
+	private VehicleRoutingActivityCosts activityCost;
+
+	private ForwardTransportCost transportCost;
+	
+	private StateManager states;
+	
+	private double totalOperationCost = 0.0;
+	
+	private VehicleRoute vehicleRoute = null;
+	
+	private TourActivity prevAct = null;
+	
+	private double startTimeAtPrevAct = 0.0;
+	
+	private ActivityTimeTracker timeTracker;
+	
+	/**
+	 * Updates total costs (i.e. transport and activity costs) at route and activity level.
+	 * 
+	 * <p>Thus it modifies <code>stateManager.getRouteState(route, StateTypes.COSTS)</code> and <br>
+	 * <code>stateManager.getActivityState(activity, StateTypes.COSTS)</code>
+	 * 
+	 * 
+	 * @param activityCost
+	 * @param transportCost
+	 * @param states
+	 */
+	public UpdateCostsAtAllLevels(VehicleRoutingActivityCosts activityCost, VehicleRoutingTransportCosts transportCost, StateManager states) {
+		super();
+		this.activityCost = activityCost;
+		this.transportCost = transportCost;
+		this.states = states;
+		timeTracker = new ActivityTimeTracker(transportCost);
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		vehicleRoute = route;
+		vehicleRoute.getVehicleRouteCostCalculator().reset();
+		timeTracker.begin(route);
+		prevAct = route.getStart();
+		startTimeAtPrevAct = timeTracker.getActEndTime();
+	}
+
+	@Override
+	public void visit(TourActivity act) {
+		timeTracker.visit(act);
+		
+		double transportCost = this.transportCost.getTransportCost(prevAct.getLocationId(), act.getLocationId(), startTimeAtPrevAct, vehicleRoute.getDriver(), vehicleRoute.getVehicle());
+		double actCost = activityCost.getActivityCost(act, timeTracker.getActArrTime(), vehicleRoute.getDriver(), vehicleRoute.getVehicle());
+
+		vehicleRoute.getVehicleRouteCostCalculator().addTransportCost(transportCost);
+		vehicleRoute.getVehicleRouteCostCalculator().addActivityCost(actCost);
+		
+		totalOperationCost += transportCost;
+		totalOperationCost += actCost;
+
+		states.putActivityState(act, StateFactory.COSTS, new StateImpl(totalOperationCost));
+
+		prevAct = act;
+		startTimeAtPrevAct = timeTracker.getActEndTime();
+	}
+
+	@Override
+	public void finish() {
+		timeTracker.finish();
+		double transportCost = this.transportCost.getTransportCost(prevAct.getLocationId(), vehicleRoute.getEnd().getLocationId(), startTimeAtPrevAct, vehicleRoute.getDriver(), vehicleRoute.getVehicle());
+		double actCost = activityCost.getActivityCost(vehicleRoute.getEnd(), timeTracker.getActEndTime(), vehicleRoute.getDriver(), vehicleRoute.getVehicle());
+		
+		vehicleRoute.getVehicleRouteCostCalculator().addTransportCost(transportCost);
+		vehicleRoute.getVehicleRouteCostCalculator().addActivityCost(actCost);
+		
+		totalOperationCost += transportCost;
+		totalOperationCost += actCost;
+//		totalOperationCost += getFixCosts(vehicleRoute.getVehicle());
+		
+		states.putRouteState(vehicleRoute, StateFactory.COSTS, new StateImpl(totalOperationCost));
+		
+		//this is rather strange and likely to change
+		vehicleRoute.getVehicleRouteCostCalculator().price(vehicleRoute.getDriver());
+		vehicleRoute.getVehicleRouteCostCalculator().price(vehicleRoute.getVehicle());
+		vehicleRoute.getVehicleRouteCostCalculator().finish();
+		
+		startTimeAtPrevAct = 0.0;
+		prevAct = null;
+		vehicleRoute = null;
+		totalOperationCost = 0.0;
+	}
+
+	private double getFixCosts(Vehicle vehicle) {
+		if(vehicle == null) return 0.0;
+		if(vehicle.getType() == null) return 0.0;
+		return vehicle.getType().getVehicleCostParams().fix;
+	}
+
+}

jsprit-core/src/main/java/algorithms/UpdateCostsAtRouteLevel.java

@@ -0,0 +1,63 @@
+package algorithms;
+
+import java.util.Collection;
+
+import algorithms.StateManager.StateImpl;
+import basics.Job;
+import basics.algo.InsertionEndsListener;
+import basics.algo.InsertionStartsListener;
+import basics.algo.JobInsertedListener;
+import basics.costs.VehicleRoutingActivityCosts;
+import basics.costs.VehicleRoutingTransportCosts;
+import basics.route.RouteActivityVisitor;
+import basics.route.VehicleRoute;
+
+class UpdateCostsAtRouteLevel implements StateUpdater,JobInsertedListener, InsertionStartsListener, InsertionEndsListener{
+		
+		private StateManager states;
+		
+		private VehicleRoutingTransportCosts tpCosts;
+		
+		private VehicleRoutingActivityCosts actCosts;
+		
+		public UpdateCostsAtRouteLevel(StateManager states, VehicleRoutingTransportCosts tpCosts, VehicleRoutingActivityCosts actCosts) {
+			super();
+			this.states = states;
+			this.tpCosts = tpCosts;
+			this.actCosts = actCosts;
+		}
+
+		@Override
+		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
+//			inRoute.getVehicleRouteCostCalculator().addTransportCost(additionalCosts);
+			double oldCosts = states.getRouteState(inRoute, StateFactory.COSTS).toDouble();
+			oldCosts += additionalCosts;
+			states.putRouteState(inRoute, StateFactory.COSTS, new StateImpl(oldCosts));
+		}
+
+		@Override
+		public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs) {
+			RouteActivityVisitor forwardInTime = new RouteActivityVisitor();
+			forwardInTime.addActivityVisitor(new UpdateCostsAtAllLevels(actCosts, tpCosts, states));
+			for(VehicleRoute route : vehicleRoutes){
+				forwardInTime.visit(route);
+			}
+			
+		}
+
+		@Override
+		public void informInsertionEnds(Collection<VehicleRoute> vehicleRoutes) {
+			
+//			IterateRouteForwardInTime forwardInTime = new IterateRouteForwardInTime(tpCosts);
+//			forwardInTime.addListener(new UpdateCostsAtAllLevels(actCosts, tpCosts, states));
+			for(VehicleRoute route : vehicleRoutes){
+				if(route.isEmpty()) continue;
+				route.getVehicleRouteCostCalculator().reset();
+				route.getVehicleRouteCostCalculator().addOtherCost(states.getRouteState(route, StateFactory.COSTS).toDouble());
+				route.getVehicleRouteCostCalculator().price(route.getVehicle());
+//				forwardInTime.iterate(route);
+			}
+			
+		}
+
+	}

jsprit-core/src/main/java/algorithms/UpdateEarliestStartTimeWindowAtActLocations.java

@@ -0,0 +1,37 @@
+package algorithms;
+
+import util.ActivityTimeTracker;
+import algorithms.StateManager.StateImpl;
+import basics.costs.VehicleRoutingTransportCosts;
+import basics.route.ActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+class UpdateEarliestStartTimeWindowAtActLocations implements ActivityVisitor,StateUpdater{
+
+	private StateManager states;
+	
+	private ActivityTimeTracker timeTracker;
+	
+	public UpdateEarliestStartTimeWindowAtActLocations(StateManager states, VehicleRoutingTransportCosts transportCosts) {
+		super();
+		this.states = states;
+		timeTracker = new ActivityTimeTracker(transportCosts);
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		timeTracker.begin(route);
+	}
+
+	@Override
+	public void visit(TourActivity activity) {
+		timeTracker.visit(activity);
+		states.putActivityState(activity, StateFactory.EARLIEST_OPERATION_START_TIME, new StateImpl(Math.max(timeTracker.getActArrTime(), activity.getTheoreticalEarliestOperationStartTime())));
+		
+	}
+
+	@Override
+	public void finish() {}
+
+}

jsprit-core/src/main/java/algorithms/UpdateFuturePickupsAtActivityLevel.java

@@ -0,0 +1,39 @@
+package algorithms;
+
+import basics.route.PickupActivity;
+import basics.route.ReverseActivityVisitor;
+import basics.route.ServiceActivity;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+class UpdateFuturePickupsAtActivityLevel implements ReverseActivityVisitor, StateUpdater {
+	private StateManager stateManager;
+	private int futurePicks = 0;
+	private VehicleRoute route;
+	
+	public UpdateFuturePickupsAtActivityLevel(StateManager stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		this.route = route;
+	}
+
+	@Override
+	public void visit(TourActivity act) {
+		stateManager.putActivityState(act, StateFactory.FUTURE_PICKS, StateFactory.createState(futurePicks));
+		if(act instanceof PickupActivity || act instanceof ServiceActivity){
+			futurePicks += act.getCapacityDemand();
+		}
+		assert futurePicks <= route.getVehicle().getCapacity() : "sum of pickups must not be > vehicleCap";
+		assert futurePicks >= 0 : "sum of pickups must not < 0";
+	}
+
+	@Override
+	public void finish() {
+		futurePicks = 0;
+		route = null;
+	}
+}

jsprit-core/src/main/java/algorithms/UpdateLatestOperationStartTimeAtActLocations.java

@@ -0,0 +1,51 @@
+package algorithms;
+
+import org.apache.log4j.Logger;
+
+import algorithms.StateManager.StateImpl;
+import basics.costs.VehicleRoutingTransportCosts;
+import basics.route.ReverseActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+class UpdateLatestOperationStartTimeAtActLocations implements ReverseActivityVisitor, StateUpdater{
+
+	private static Logger log = Logger.getLogger(UpdateLatestOperationStartTimeAtActLocations.class);
+	
+	private StateManager states;
+	
+	private VehicleRoute route;
+	
+	private VehicleRoutingTransportCosts transportCosts;
+	
+	private double latestArrTimeAtPrevAct;
+	
+	private TourActivity prevAct;
+	
+	public UpdateLatestOperationStartTimeAtActLocations(StateManager states, VehicleRoutingTransportCosts tpCosts) {
+		super();
+		this.states = states;
+		this.transportCosts = tpCosts;
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		this.route = route;
+		latestArrTimeAtPrevAct = route.getEnd().getTheoreticalLatestOperationStartTime();
+		prevAct = route.getEnd();
+	}
+
+	@Override
+	public void visit(TourActivity activity) {
+		double potentialLatestArrivalTimeAtCurrAct = latestArrTimeAtPrevAct - transportCosts.getBackwardTransportTime(activity.getLocationId(), prevAct.getLocationId(), latestArrTimeAtPrevAct, route.getDriver(),route.getVehicle()) - activity.getOperationTime();
+		double latestArrivalTime = Math.min(activity.getTheoreticalLatestOperationStartTime(), potentialLatestArrivalTimeAtCurrAct);
+		
+		states.putActivityState(activity, StateFactory.LATEST_OPERATION_START_TIME, new StateImpl(latestArrivalTime));
+		
+		latestArrTimeAtPrevAct = latestArrivalTime;
+		prevAct = activity;
+	}
+
+	@Override
+	public void finish() {}
+}

jsprit-core/src/main/java/algorithms/UpdateLoadAtActivityLevel.java

@@ -0,0 +1,67 @@
+package algorithms;
+
+import algorithms.StateManager.StateImpl;
+import basics.route.ActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+/**
+ * Updates load at activity level. 
+ * 
+ * <p>Note that this assumes that StateTypes.LOAD_AT_DEPOT is already updated, i.e. it starts by setting loadAtDepot to StateTypes.LOAD_AT_DEPOT.
+ * If StateTypes.LOAD_AT_DEPOT is not set, it starts with 0 load at depot.
+ * 
+ * <p>Thus it DEPENDS on StateTypes.LOAD_AT_DEPOT
+ *  
+ * @author stefan
+ *
+ */
+class UpdateLoadAtActivityLevel implements ActivityVisitor, StateUpdater {
+	private StateManager stateManager;
+	private int currentLoad = 0;
+	private VehicleRoute route;
+	
+	/**
+	 * Updates load at activity level. 
+	 * 
+	 * <p>Note that this assumes that StateTypes.LOAD_AT_DEPOT is already updated, i.e. it starts by setting loadAtDepot to StateTypes.LOAD_AT_DEPOT.
+	 * If StateTypes.LOAD_AT_DEPOT is not set, it starts with 0 load at depot.
+	 *
+	 * <p>Thus it DEPENDS on StateTypes.LOAD_AT_DEPOT
+	 * 
+	 * <p>If you want to update StateTypes.LOAD_AT_DEPOT see {@link UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts}, {@link UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted}
+	 * 
+	 * <p>The loads can be retrieved by <br>
+	 * <code>stateManager.getActivityState(activity,StateTypes.LOAD);</code>
+	 * 
+	 * 
+	 * 
+	 * @see {@link UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts}, {@link UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted}
+	 * @author stefan
+	 *
+	 */
+	public UpdateLoadAtActivityLevel(StateManager stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+	
+	@Override
+	public void begin(VehicleRoute route) {
+		currentLoad = (int) stateManager.getRouteState(route, StateFactory.LOAD_AT_BEGINNING).toDouble();
+		this.route = route;
+	}
+
+	@Override
+	public void visit(TourActivity act) {
+		currentLoad += act.getCapacityDemand();
+		stateManager.putActivityState(act, StateFactory.LOAD, StateFactory.createState(currentLoad));
+		assert currentLoad <= route.getVehicle().getCapacity() : "currentLoad at activity must not be > vehicleCapacity";
+		assert currentLoad >= 0 : "currentLoad at act must not be < 0";
+	}
+
+	@Override
+	public void finish() {
+//		stateManager.putRouteState(route, StateFactory., state)
+		currentLoad = 0;
+	}
+}

jsprit-core/src/main/java/algorithms/UpdateLoadAtAllLevels.java

@@ -0,0 +1,39 @@
+package algorithms;
+
+import algorithms.StateManager.StateImpl;
+import basics.route.ActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+class UpdateLoadAtAllLevels implements ActivityVisitor,StateUpdater{
+
+	private double load = 0.0;
+	
+	private StateManager states;
+	
+	private VehicleRoute vehicleRoute;
+	
+	public UpdateLoadAtAllLevels(StateManager states) {
+		super();
+		this.states = states;
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		vehicleRoute = route;
+	}
+
+	@Override
+	public void visit(TourActivity activity) {
+		load += (double)activity.getCapacityDemand();
+		states.putActivityState(activity, StateFactory.LOAD, new StateImpl(load));
+	}
+
+	@Override
+	public void finish() {
+		states.putRouteState(vehicleRoute, StateFactory.LOAD, new StateImpl(load));
+		load=0;
+		vehicleRoute = null;
+	}
+
+}

jsprit-core/src/main/java/algorithms/UpdateLoadAtRouteLevel.java

@@ -0,0 +1,54 @@
+package algorithms;
+
+import java.util.Collection;
+
+import algorithms.StateManager.StateImpl;
+import basics.Job;
+import basics.Service;
+import basics.algo.InsertionStartsListener;
+import basics.algo.JobInsertedListener;
+import basics.route.VehicleRoute;
+
+/**
+ * Updates load at route level, i.e. modifies StateTypes.LOAD for each route.
+ * 
+ * @author stefan
+ *
+ */
+class UpdateLoadAtRouteLevel implements JobInsertedListener, InsertionStartsListener, StateUpdater{
+
+	private StateManager states;
+	
+	/**
+	 * Updates load at route level, i.e. modifies StateTypes.LOAD for each route.
+	 * 
+	 * @author stefan
+	 *
+	 */
+	public UpdateLoadAtRouteLevel(StateManager states) {
+		super();
+		this.states = states;
+	}
+
+	@Override
+	public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
+		if(!(job2insert instanceof Service)){
+			return;
+		}
+		double oldLoad = states.getRouteState(inRoute, StateFactory.LOAD).toDouble();
+		states.putRouteState(inRoute, StateFactory.LOAD, StateFactory.createState(oldLoad + job2insert.getCapacityDemand()));
+	}
+
+	@Override
+	public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs) {
+		for(VehicleRoute route : vehicleRoutes){
+			int load = 0;
+			for(Job j : route.getTourActivities().getJobs()){
+				load += j.getCapacityDemand();
+			}
+			states.putRouteState(route, StateFactory.LOAD, new StateImpl(load));
+		}
+		
+	}
+
+}

jsprit-core/src/main/java/algorithms/UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts.java

@@ -0,0 +1,62 @@
+package algorithms;
+
+import java.util.Collection;
+
+import algorithms.StateManager.StateImpl;
+import basics.Delivery;
+import basics.Job;
+import basics.Pickup;
+import basics.Service;
+import basics.algo.InsertionStartsListener;
+import basics.route.VehicleRoute;
+
+/**
+ * Initializes the load of each route/vehicle at start- and end-location before insertion starts.
+ * 
+ * <p>StateTypes.LOAD_AT_DEPOT and StateTypes.LOAD are modified for each route 
+ * <p>These states can be retrieved by <br> 
+ * stateManager.getRouteState(route, StateTypes.LOAD_AT_DEPOT) for LOAD_AT_DEPOT and <br>
+ * stateManager.getRouteState(route, StateTypes.LOAD) for LOAD (i.e. load at end)
+ * 
+ * @param stateManager
+ */
+class UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts implements InsertionStartsListener {
+
+	private StateManager stateManager;
+	
+	/**
+	 * Initializes the load of each route/vehicle at start- and end-location before insertion starts.
+	 * 
+	 * <p>StateTypes.LOAD_AT_DEPOT and StateTypes.LOAD are modified for each route 
+	 * <p>These states can be retrieved by <br> 
+	 * stateManager.getRouteState(route, StateTypes.LOAD_AT_DEPOT) for LOAD_AT_DEPOT and <br>
+	 * stateManager.getRouteState(route, StateTypes.LOAD) for LOAD (i.e. load at end)
+	 * 
+	 * @param stateManager
+	 */
+	public UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts(StateManager stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	void insertionStarts(VehicleRoute route) {
+		int loadAtDepot = 0;
+		int loadAtEnd = 0;
+		for(Job j : route.getTourActivities().getJobs()){
+			if(j instanceof Delivery){
+				loadAtDepot += j.getCapacityDemand();
+			}
+			else if(j instanceof Pickup || j instanceof Service){
+				loadAtEnd += j.getCapacityDemand();
+			}
+		}
+		stateManager.putRouteState(route, StateFactory.LOAD_AT_BEGINNING, StateFactory.createState(loadAtDepot));
+		stateManager.putRouteState(route, StateFactory.LOAD_AT_END, StateFactory.createState(loadAtEnd));
+	}
+
+	@Override
+	public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs) {
+		for(VehicleRoute route : vehicleRoutes){ insertionStarts(route); }
+	}
+	
+}

jsprit-core/src/main/java/algorithms/UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted.java

@@ -0,0 +1,52 @@
+package algorithms;
+
+import algorithms.StateManager.StateImpl;
+import basics.Delivery;
+import basics.Job;
+import basics.Pickup;
+import basics.Service;
+import basics.algo.JobInsertedListener;
+import basics.route.VehicleRoute;
+
+/**
+ * Updates loads at start and end of a route if a job has been inserted in that route.
+ * 
+ * <p>These states can be retrieved by <br> 
+ * stateManager.getRouteState(route, StateTypes.LOAD_AT_DEPOT) for LOAD_AT_DEPOT and <br>
+ * stateManager.getRouteState(route, StateTypes.LOAD) for LOAD (i.e. load at end)
+ * 
+ * @param stateManager
+ */
+class UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted implements JobInsertedListener, StateUpdater {
+
+		private StateManager stateManager;
+		
+		/**
+		 * Updates loads at start and end of a route if a job has been inserted in that route.
+		 * 
+		 * <p>These states can be retrieved by <br> 
+		 * stateManager.getRouteState(route, StateTypes.LOAD_AT_DEPOT) for LOAD_AT_DEPOT and <br>
+		 * stateManager.getRouteState(route, StateTypes.LOAD) for LOAD (i.e. load at end)
+		 * 
+		 * @param stateManager
+		 */
+		public UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted(StateManager stateManager) {
+			super();
+			this.stateManager = stateManager;
+		}
+
+		@Override
+		public void informJobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime) {
+			if(job2insert instanceof Delivery){
+				int loadAtDepot = (int) stateManager.getRouteState(inRoute, StateFactory.LOAD_AT_BEGINNING).toDouble();
+//				log.info("loadAtDepot="+loadAtDepot);
+				stateManager.putRouteState(inRoute, StateFactory.LOAD_AT_BEGINNING, StateFactory.createState(loadAtDepot + job2insert.getCapacityDemand()));
+			}
+			else if(job2insert instanceof Pickup || job2insert instanceof Service){
+				int loadAtEnd = (int) stateManager.getRouteState(inRoute, StateFactory.LOAD_AT_END).toDouble();
+//				log.info("loadAtEnd="+loadAtEnd);
+				stateManager.putRouteState(inRoute, StateFactory.LOAD_AT_END, StateFactory.createState(loadAtEnd + job2insert.getCapacityDemand()));
+			}
+		}
+		
+	}

jsprit-core/src/main/java/algorithms/UpdateMaxLoad.java

@@ -0,0 +1,69 @@
+package algorithms;
+
+import basics.route.ActivityVisitor;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+/**
+ * Updates load at activity level. 
+ * 
+ * <p>Note that this assumes that StateTypes.LOAD_AT_DEPOT is already updated, i.e. it starts by setting loadAtDepot to StateTypes.LOAD_AT_DEPOT.
+ * If StateTypes.LOAD_AT_DEPOT is not set, it starts with 0 load at depot.
+ * 
+ * <p>Thus it DEPENDS on StateTypes.LOAD_AT_DEPOT
+ *  
+ * @author stefan
+ *
+ */
+class UpdateMaxLoad implements ActivityVisitor, StateUpdater {
+	private StateManager stateManager;
+	private int currentLoad = 0;
+	private VehicleRoute route;
+	private int maxLoad = 0;
+	
+	/**
+	 * Updates load at activity level. 
+	 * 
+	 * <p>Note that this assumes that StateTypes.LOAD_AT_DEPOT is already updated, i.e. it starts by setting loadAtDepot to StateTypes.LOAD_AT_DEPOT.
+	 * If StateTypes.LOAD_AT_DEPOT is not set, it starts with 0 load at depot.
+	 *
+	 * <p>Thus it DEPENDS on StateTypes.LOAD_AT_DEPOT
+	 * 
+	 * <p>If you want to update StateTypes.LOAD_AT_DEPOT see {@link UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts}, {@link UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted}
+	 * 
+	 * <p>The loads can be retrieved by <br>
+	 * <code>stateManager.getActivityState(activity,StateTypes.LOAD);</code>
+	 * 
+	 * 
+	 * 
+	 * @see {@link UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts}, {@link UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted}
+	 * @author stefan
+	 *
+	 */
+	public UpdateMaxLoad(StateManager stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+	
+	@Override
+	public void begin(VehicleRoute route) {
+		currentLoad = (int) stateManager.getRouteState(route, StateFactory.LOAD_AT_BEGINNING).toDouble();
+		maxLoad = currentLoad;
+		this.route = route;
+	}
+
+	@Override
+	public void visit(TourActivity act) {
+		currentLoad += act.getCapacityDemand();
+		maxLoad = Math.max(maxLoad, currentLoad);
+		assert currentLoad <= route.getVehicle().getCapacity() : "currentLoad at activity must not be > vehicleCapacity";
+		assert currentLoad >= 0 : "currentLoad at act must not be < 0";
+	}
+
+	@Override
+	public void finish() {
+		stateManager.putRouteState(route, StateFactory.MAXLOAD, StateFactory.createState(maxLoad));
+		currentLoad = 0;
+		maxLoad = 0;
+	}
+}

jsprit-core/src/main/java/algorithms/UpdateOccuredDeliveriesAtActivityLevel.java

@@ -0,0 +1,39 @@
+package algorithms;
+
+import algorithms.StateManager.StateImpl;
+import basics.route.ActivityVisitor;
+import basics.route.DeliveryActivity;
+import basics.route.TourActivity;
+import basics.route.VehicleRoute;
+
+class UpdateOccuredDeliveriesAtActivityLevel implements ActivityVisitor, StateUpdater {
+	private StateManager stateManager;
+	private int deliveries = 0; 
+	private VehicleRoute route;
+	
+	public UpdateOccuredDeliveriesAtActivityLevel(StateManager stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	@Override
+	public void begin(VehicleRoute route) {
+		this.route = route; 
+	}
+
+	@Override
+	public void visit(TourActivity act) {
+		if(act instanceof DeliveryActivity){
+			deliveries += Math.abs(act.getCapacityDemand());
+		}
+		stateManager.putActivityState(act, StateFactory.PAST_DELIVERIES, StateFactory.createState(deliveries));
+		assert deliveries >= 0 : "deliveries < 0";
+		assert deliveries <= route.getVehicle().getCapacity() : "deliveries > vehicleCap";
+	}
+
+	@Override
+	public void finish() {
+		deliveries = 0;
+		route = null;
+	}
+}

jsprit-core/src/main/java/algorithms/VariablePlusFixedSolutionCostCalculatorFactory.java

@@ -0,0 +1,31 @@
+package algorithms;
+
+import basics.VehicleRoutingProblemSolution;
+import basics.algo.SolutionCostCalculator;
+import basics.route.VehicleRoute;
+
+public class VariablePlusFixedSolutionCostCalculatorFactory {
+	
+	private StateManager stateManager;
+	
+	public VariablePlusFixedSolutionCostCalculatorFactory(StateManager stateManager) {
+		super();
+		this.stateManager = stateManager;
+	}
+
+	public SolutionCostCalculator createCalculator(){
+		return new SolutionCostCalculator() {
+			
+			@Override
+			public double getCosts(VehicleRoutingProblemSolution solution) {
+				double c = 0.0;
+				for(VehicleRoute r : solution.getRoutes()){
+					c += stateManager.getRouteState(r, StateFactory.COSTS).toDouble();
+					c += r.getVehicle().getType().getVehicleCostParams().fix;
+				}
+				return c;
+			}
+		};
+	}
+
+}

jsprit-core/src/main/java/algorithms/VehicleFleetManager.java

@@ -1,84 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2013  Stefan Schroeder
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either 
- * version 3.0 of the License, or (at your option) any later version.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public 
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
-package algorithms;
-
-import java.util.Collection;
-
-import basics.route.Vehicle;
-
-interface VehicleFleetManager {
-	
-	static class TypeKey {
-		
-		public final String type;
-		public final String locationId;
-		
-		public TypeKey(String typeId, String locationId) {
-			super();
-			this.type = typeId;
-			this.locationId = locationId;
-		}
-
-		@Override
-		public int hashCode() {
-			final int prime = 31;
-			int result = 1;
-			result = prime * result
-					+ ((locationId == null) ? 0 : locationId.hashCode());
-			result = prime * result + ((type == null) ? 0 : type.hashCode());
-			return result;
-		}
-
-		@Override
-		public boolean equals(Object obj) {
-			if (this == obj)
-				return true;
-			if (obj == null)
-				return false;
-			if (getClass() != obj.getClass())
-				return false;
-			TypeKey other = (TypeKey) obj;
-			if (locationId == null) {
-				if (other.locationId != null)
-					return false;
-			} else if (!locationId.equals(other.locationId))
-				return false;
-			if (type == null) {
-				if (other.type != null)
-					return false;
-			} else if (!type.equals(other.type))
-				return false;
-			return true;
-		}
-
-				
-		
-	}
-
-	abstract void lock(Vehicle vehicle);
-
-	abstract void unlock(Vehicle vehicle);
-
-	abstract boolean isLocked(Vehicle vehicle);
-
-	abstract void unlockAll();
-
-	abstract Collection<Vehicle> getAvailableVehicles();
-
-	Collection<Vehicle> getAvailableVehicles(String withoutThisType, String locationId);
-
-}

jsprit-core/src/main/java/algorithms/VehicleRoutingAlgorithmBuilder.java

@@ -0,0 +1,44 @@
+package algorithms;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import basics.VehicleRoutingAlgorithm;
+import basics.VehicleRoutingProblem;
+import basics.algo.SearchStrategyManager;
+import basics.algo.VehicleRoutingAlgorithmListener;
+import basics.route.VehicleFleetManager;
+
+public class VehicleRoutingAlgorithmBuilder {
+
+	private VehicleRoutingProblem vrp;
+	
+	private SearchStrategyManager searchStrategyManager;
+	
+	private StateManager stateManager;
+	
+	private Collection<VehicleRoutingAlgorithmListener> listeners = new ArrayList<VehicleRoutingAlgorithmListener>();
+
+	private VehicleFleetManager fleetManager;
+	
+	public VehicleRoutingAlgorithmBuilder(VehicleRoutingProblem vrp, SearchStrategyManager searchStrategyManager, StateManager stateManager, VehicleFleetManager vehicleFleetManager) {
+		super();
+		this.vrp = vrp;
+		this.searchStrategyManager = searchStrategyManager;
+		this.stateManager = stateManager;
+		this.fleetManager = vehicleFleetManager;
+	}
+	
+	public void addListener(VehicleRoutingAlgorithmListener listener){
+		listeners.add(listener);
+	}
+	
+	public VehicleRoutingAlgorithm build(){
+		VehicleRoutingAlgorithm algorithm = new VehicleRoutingAlgorithm(vrp, searchStrategyManager);
+		algorithm.getAlgorithmListeners().addListener(stateManager);
+		algorithm.getSearchStrategyManager().addSearchStrategyModuleListener(stateManager);
+		algorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new RemoveEmptyVehicles(fleetManager));
+		return algorithm;
+	}
+	
+}

jsprit-core/src/main/java/algorithms/VehicleRoutingAlgorithms.java

@@ -31,7 +31,6 @@ import org.apache.commons.configuration.HierarchicalConfiguration;
 import org.apache.commons.configuration.XMLConfiguration;
 import org.apache.log4j.Logger;
 
-import algorithms.HardConstraints.ConstraintManager;
 import algorithms.VehicleRoutingAlgorithms.TypedMap.AbstractKey;
 import algorithms.VehicleRoutingAlgorithms.TypedMap.AcceptorKey;
 import algorithms.VehicleRoutingAlgorithms.TypedMap.InsertionStrategyKey;
@@ -65,7 +64,10 @@ import basics.algo.VehicleRoutingAlgorithmListeners.PrioritizedVRAListener;
 import basics.algo.VehicleRoutingAlgorithmListeners.Priority;
 import basics.io.AlgorithmConfig;
 import basics.io.AlgorithmConfigXmlReader;
+import basics.route.FiniteFleetManagerFactory;
+import basics.route.InfiniteFleetManagerFactory;
 import basics.route.Vehicle;
+import basics.route.VehicleFleetManager;
 import basics.route.VehicleRoute;
 
 
@@ -437,23 +439,23 @@ public class VehicleRoutingAlgorithms {
 		final VehicleFleetManager vehicleFleetManager = createFleetManager(vrp);
 		
 		//create state-manager
-		final StateManagerImpl stateManager = new StateManagerImpl();
+		final StateManager stateManager = new StateManager();
 		
 		/*
 		 * define constraints
 		 */
 		//constraint manager
 		ConstraintManager constraintManager = new ConstraintManager();
-		constraintManager.addConstraint(new HardConstraints.HardTimeWindowActivityLevelConstraint(stateManager, vrp.getTransportCosts()));
+		constraintManager.addConstraint(new HardTimeWindowActivityLevelConstraint(stateManager, vrp.getTransportCosts()));
 	
 		if(vrp.getProblemConstraints().contains(Constraint.DELIVERIES_FIRST)){
-			constraintManager.addConstraint(new HardConstraints.HardPickupAndDeliveryBackhaulActivityLevelConstraint(stateManager));
+			constraintManager.addConstraint(new HardPickupAndDeliveryBackhaulActivityLevelConstraint(stateManager));
 		}
 		else{
-			constraintManager.addConstraint(new HardConstraints.HardPickupAndDeliveryActivityLevelConstraint(stateManager));
+			constraintManager.addConstraint(new HardPickupAndDeliveryActivityLevelConstraint(stateManager));
 		}
 		
-		constraintManager.addConstraint(new HardConstraints.HardPickupAndDeliveryLoadConstraint(stateManager));
+		constraintManager.addConstraint(new HardPickupAndDeliveryLoadRouteLevelConstraint(stateManager));
 		
 		//construct initial solution creator 
 		AlgorithmStartsListener createInitialSolution = createInitialSolution(config,vrp,vehicleFleetManager,stateManager,algorithmListeners,definedClasses,executorService,nuOfThreads,constraintManager);
@@ -491,24 +493,22 @@ public class VehicleRoutingAlgorithms {
 		 * define stateUpdates
 		 */
 		
-		//reset stateManager
+		stateManager.addListener(new UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts(stateManager));
-		algorithmListeners.add(new PrioritizedVRAListener(Priority.LOW, new StateUpdates.ResetStateManager(stateManager)));
+		stateManager.addListener(new UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted(stateManager));
-		//update states
-//		metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new UpdateStates(stateManager, vrp.getTransportCosts(), vrp.getActivityCosts()));
-		StateUpdates.UpdateRouteStatesOnceTheRouteHasBeenChanged routeChangedListener = new StateUpdates.UpdateRouteStatesOnceTheRouteHasBeenChanged(vrp.getTransportCosts());
 	
-		routeChangedListener.addInsertionStartsListener(new StateUpdates.UpdateLoadsAtStartAndEndOfRouteWhenInsertionStarts(stateManager));
+		stateManager.addActivityVisitor(new UpdateActivityTimes(vrp.getTransportCosts()));
-		routeChangedListener.addJobInsertedListener(new StateUpdates.UpdateLoadsAtStartAndEndOfRouteWhenJobHasBeenInserted(stateManager));
+		stateManager.addActivityVisitor(new UpdateLoadAtActivityLevel(stateManager));
 		
-		routeChangedListener.addVisitor(new StateUpdates.UpdateActivityTimes(vrp.getTransportCosts()));
+		stateManager.addActivityVisitor(new UpdateCostsAtAllLevels(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager));
-		routeChangedListener.addVisitor(new StateUpdates.UpdateLoadAtActivityLevel(stateManager));
-		routeChangedListener.addVisitor(new StateUpdates.UpdateCostsAtAllLevels(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager));
 		
-		routeChangedListener.addVisitor(new StateUpdates.UpdateOccuredDeliveriesAtActivityLevel(stateManager));
+		stateManager.addActivityVisitor(new UpdateOccuredDeliveriesAtActivityLevel(stateManager));
-		routeChangedListener.addVisitor(new StateUpdates.UpdateLatestOperationStartTimeAtActLocations(stateManager, vrp.getTransportCosts()));
+		stateManager.addActivityVisitor(new UpdateLatestOperationStartTimeAtActLocations(stateManager, vrp.getTransportCosts()));
-		routeChangedListener.addVisitor(new StateUpdates.UpdateFuturePickupsAtActivityLevel(stateManager));
+		stateManager.addActivityVisitor(new UpdateFuturePickupsAtActivityLevel(stateManager));
+
+		
+		metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(stateManager);
+		metaAlgorithm.getAlgorithmListeners().addListener(stateManager);
 		
-		metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(routeChangedListener);
 		metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new RemoveEmptyVehicles(vehicleFleetManager));
 		metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new ResetAndIniFleetManager(vehicleFleetManager));
 		metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new VehicleSwitched(vehicleFleetManager));
@@ -526,16 +526,16 @@ public class VehicleRoutingAlgorithms {
 		return metaAlgorithm;	
 	}
 
-	private static SolutionCostCalculator getCostCalculator(final StateManagerImpl stateManager) {
+	private static SolutionCostCalculator getCostCalculator(final StateManager stateManager) {
 		SolutionCostCalculator calc = new SolutionCostCalculator() {
 			
 			@Override
-			public void calculateCosts(VehicleRoutingProblemSolution solution) {
+			public double getCosts(VehicleRoutingProblemSolution solution) {
 				double costs = 0.0;
 				for(VehicleRoute route : solution.getRoutes()){
-					costs += stateManager.getRouteState(route, StateTypes.COSTS).toDouble() + getFixedCosts(route.getVehicle());
+					costs += stateManager.getRouteState(route, StateFactory.COSTS).toDouble() + getFixedCosts(route.getVehicle());
 				}
-				solution.setCost(costs);
+				return costs;
 			}
 
 			private double getFixedCosts(Vehicle vehicle) {
@@ -549,11 +549,11 @@ public class VehicleRoutingAlgorithms {
 
 	private static VehicleFleetManager createFleetManager(final VehicleRoutingProblem vrp) {
 		if(vrp.getFleetSize().equals(FleetSize.INFINITE)){
-			return new InfiniteVehicles(vrp.getVehicles());
+			return new InfiniteFleetManagerFactory(vrp.getVehicles()).createFleetManager();
 
 		}
 		else if(vrp.getFleetSize().equals(FleetSize.FINITE)){ 
-			return new VehicleFleetManagerImpl(vrp.getVehicles()); 
+			return new FiniteFleetManagerFactory(vrp.getVehicles()).createFleetManager(); 
 		}
 		throw new IllegalStateException("fleet size can only be infinite or finite. " +
 				"makes sure your config file contains one of these options");
@@ -626,7 +626,7 @@ public class VehicleRoutingAlgorithms {
 		metaAlgorithm.getAlgorithmListeners().addAll(algorithmListeners);
 	}
 	
-	private static AlgorithmStartsListener createInitialSolution(XMLConfiguration config, final VehicleRoutingProblem vrp, VehicleFleetManager vehicleFleetManager, final StateManagerImpl routeStates, Set<PrioritizedVRAListener> algorithmListeners, TypedMap definedClasses, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager) {
+	private static AlgorithmStartsListener createInitialSolution(XMLConfiguration config, final VehicleRoutingProblem vrp, VehicleFleetManager vehicleFleetManager, final StateManager routeStates, Set<PrioritizedVRAListener> algorithmListeners, TypedMap definedClasses, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager) {
 		List<HierarchicalConfiguration> modConfigs = config.configurationsAt("construction.insertion");
 		if(modConfigs == null) return null;
 		if(modConfigs.isEmpty()) return null;
@@ -651,9 +651,11 @@ public class VehicleRoutingAlgorithms {
 
 			@Override
 			public void informAlgorithmStarts(VehicleRoutingProblem problem, VehicleRoutingAlgorithm algorithm, Collection<VehicleRoutingProblemSolution> solutions) {
-				CreateInitialSolution createInitialSolution = new CreateInitialSolution(finalInsertionStrategy, getCostCalculator(routeStates));
+				InsertionInitialSolutionFactory insertionInitialSolutionFactory = new InsertionInitialSolutionFactory(finalInsertionStrategy, getCostCalculator(routeStates));
-				createInitialSolution.setGenerateAsMuchAsRoutesAsVehiclesExist(false);
+//				CreateInitialSolution createInitialSolution = new CreateInitialSolution(finalInsertionStrategy, getCostCalculator(routeStates));
-				VehicleRoutingProblemSolution vrpSol = createInitialSolution.createInitialSolution(vrp);
+//
+//				createInitialSolution.setGenerateAsMuchAsRoutesAsVehiclesExist(false);
+				VehicleRoutingProblemSolution vrpSol = insertionInitialSolutionFactory.createSolution(vrp);
 				solutions.add(vrpSol);
 			}
 		};
@@ -721,7 +723,7 @@ public class VehicleRoutingAlgorithms {
 	}
 	
 	private static SearchStrategyModule buildModule(HierarchicalConfiguration moduleConfig, final VehicleRoutingProblem vrp, VehicleFleetManager vehicleFleetManager, 
-			final StateManagerImpl routeStates, Set<PrioritizedVRAListener> algorithmListeners, TypedMap definedClasses, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager) {
+			final StateManager routeStates, Set<PrioritizedVRAListener> algorithmListeners, TypedMap definedClasses, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager) {
 		String moduleName = moduleConfig.getString("[@name]");
 		if(moduleName == null) throw new IllegalStateException("module(-name) is missing.");
 		String moduleId = moduleConfig.getString("[@id]");
@@ -823,7 +825,7 @@ public class VehicleRoutingAlgorithms {
 				"\n\tgendreauPostOpt");
 	}
 
-	private static RuinStrategy getRadialRuin(final VehicleRoutingProblem vrp, final StateManagerImpl routeStates, TypedMap definedClasses, ModKey modKey, double shareToRuin, JobDistance jobDistance) {
+	private static RuinStrategy getRadialRuin(final VehicleRoutingProblem vrp, final StateManager routeStates, TypedMap definedClasses, ModKey modKey, double shareToRuin, JobDistance jobDistance) {
 		RuinStrategyKey stratKey = new RuinStrategyKey(modKey);
 		RuinStrategy ruin = definedClasses.get(stratKey);
 		if(ruin == null){
@@ -833,7 +835,7 @@ public class VehicleRoutingAlgorithms {
 		return ruin;
 	}
 
-	private static RuinStrategy getRandomRuin(final VehicleRoutingProblem vrp, final StateManagerImpl routeStates, TypedMap definedClasses, ModKey modKey, double shareToRuin) {
+	private static RuinStrategy getRandomRuin(final VehicleRoutingProblem vrp, final StateManager routeStates, TypedMap definedClasses, ModKey modKey, double shareToRuin) {
 		RuinStrategyKey stratKey = new RuinStrategyKey(modKey);
 		RuinStrategy ruin = definedClasses.get(stratKey);
 		if(ruin == null){
@@ -843,10 +845,12 @@ public class VehicleRoutingAlgorithms {
 		return ruin;
 	}
 	
-	private static InsertionStrategy createInsertionStrategy(HierarchicalConfiguration moduleConfig, VehicleRoutingProblem vrp,VehicleFleetManager vehicleFleetManager, StateManagerImpl routeStates, List<PrioritizedVRAListener> algorithmListeners, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager) {
+	private static InsertionStrategy createInsertionStrategy(HierarchicalConfiguration moduleConfig, VehicleRoutingProblem vrp,VehicleFleetManager vehicleFleetManager, StateManager routeStates, List<PrioritizedVRAListener> algorithmListeners, ExecutorService executorService, int nuOfThreads, ConstraintManager constraintManager) {
 		InsertionStrategy insertion = InsertionFactory.createInsertion(vrp, moduleConfig, vehicleFleetManager, routeStates, algorithmListeners, executorService, nuOfThreads, constraintManager);
 		return insertion;
 	}
 
 	
+	
+
 }

jsprit-core/src/main/java/algorithms/VehicleSwitched.java

@@ -17,6 +17,7 @@
 package algorithms;
 
 import basics.route.Vehicle;
+import basics.route.VehicleFleetManager;
 import basics.route.VehicleRoute;
 
 

jsprit-core/src/main/java/algorithms/VehicleTypeDependentJobInsertionCalculator.java

@@ -25,20 +25,21 @@ import algorithms.InsertionData.NoInsertionFound;
 import basics.Job;
 import basics.route.Driver;
 import basics.route.Vehicle;
+import basics.route.VehicleFleetManager;
 import basics.route.VehicleImpl.NoVehicle;
 import basics.route.VehicleRoute;
 
 
 
-final class CalculatesVehTypeDepServiceInsertion implements JobInsertionCalculator{
+final class VehicleTypeDependentJobInsertionCalculator implements JobInsertionCostsCalculator{
 
-	private Logger logger = Logger.getLogger(CalculatesVehTypeDepServiceInsertion.class);
+	private Logger logger = Logger.getLogger(VehicleTypeDependentJobInsertionCalculator.class);
 	
 	private final VehicleFleetManager fleetManager;
 	
-	private final JobInsertionCalculator insertionCalculator;
+	private final JobInsertionCostsCalculator insertionCalculator;
 
-	public CalculatesVehTypeDepServiceInsertion(final VehicleFleetManager fleetManager, final JobInsertionCalculator jobInsertionCalc) {
+	public VehicleTypeDependentJobInsertionCalculator(final VehicleFleetManager fleetManager, final JobInsertionCostsCalculator jobInsertionCalc) {
 		this.fleetManager = fleetManager;
 		this.insertionCalculator = jobInsertionCalc;
 		logger.info("inialise " + this);
@@ -49,10 +50,10 @@ final class CalculatesVehTypeDepServiceInsertion implements JobInsertionCalculat
 		return "[name=vehicleTypeDependentServiceInsertion]";
 	}
 	
-	public InsertionData calculate(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle vehicle, double newVehicleDepartureTime, final Driver driver, final double bestKnownCost) {
+	public InsertionData getInsertionData(final VehicleRoute currentRoute, final Job jobToInsert, final Vehicle vehicle, double newVehicleDepartureTime, final Driver driver, final double bestKnownCost) {
 		Vehicle selectedVehicle = currentRoute.getVehicle();
 		Driver selectedDriver = currentRoute.getDriver();
-		InsertionData bestIData = InsertionData.noInsertionFound();
+		InsertionData bestIData = InsertionData.createEmptyInsertionData();
 		double bestKnownCost_ = bestKnownCost;
 		Collection<Vehicle> relevantVehicles = new ArrayList<Vehicle>();
 		if(!(selectedVehicle instanceof NoVehicle)) {
@@ -65,7 +66,7 @@ final class CalculatesVehTypeDepServiceInsertion implements JobInsertionCalculat
 
 		for(Vehicle v : relevantVehicles){
 			double depTime = v.getEarliestDeparture();
-			InsertionData iData = insertionCalculator.calculate(currentRoute, jobToInsert, v, depTime, selectedDriver, bestKnownCost_);
+			InsertionData iData = insertionCalculator.getInsertionData(currentRoute, jobToInsert, v, depTime, selectedDriver, bestKnownCost_);
 			if(iData instanceof NoInsertionFound) { 
 				if(bestIData instanceof NoInsertionFound) bestIData = iData;
 				continue;

jsprit-core/src/main/java/basics/algo/InsertionListeners.java

@@ -0,0 +1,42 @@
+package basics.algo;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import basics.Job;
+import basics.route.VehicleRoute;
+
+public class InsertionListeners {
+	
+	private Collection<InsertionStartsListener> startListeners = new ArrayList<InsertionStartsListener>();
+	
+	private Collection<JobInsertedListener> jobInsertedListeners = new ArrayList<JobInsertedListener>();
+	
+	private Collection<InsertionEndsListener> endListeners = new ArrayList<InsertionEndsListener>();
+	
+	public void addListener(InsertionListener insertionListener){
+		if(insertionListener instanceof InsertionStartsListener) startListeners.add((InsertionStartsListener) insertionListener);
+		else if(insertionListener instanceof JobInsertedListener) jobInsertedListeners.add((JobInsertedListener) insertionListener);
+		else if(insertionListener instanceof InsertionEndsListener) endListeners.add((InsertionEndsListener) insertionListener);
+		else throw new IllegalStateException("cannot add this type of insertionListener");
+	}
+	
+	public void removeListener(InsertionListener insertionListener){
+		if(insertionListener instanceof InsertionStartsListener) startListeners.remove((InsertionStartsListener) insertionListener);
+		else if(insertionListener instanceof JobInsertedListener) jobInsertedListeners.remove((JobInsertedListener) insertionListener);
+		else if(insertionListener instanceof InsertionEndsListener) endListeners.remove((InsertionEndsListener) insertionListener);
+		else throw new IllegalStateException("cannot remove this type of insertionListener");
+	}
+	
+	public void insertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs){
+		for(InsertionStartsListener l : startListeners) l.informInsertionStarts(vehicleRoutes, unassignedJobs);
+	}
+	
+	public void jobInserted(Job job2insert, VehicleRoute inRoute, double additionalCosts, double additionalTime){
+		for(JobInsertedListener l : jobInsertedListeners) l.informJobInserted(job2insert, inRoute, additionalCosts, additionalTime);
+	}
+
+	public void insertionEnds(Collection<VehicleRoute> vehicleRoutes){
+		for(InsertionEndsListener l : endListeners){ l.informInsertionEnds(vehicleRoutes); }
+	}
+}

jsprit-core/src/main/java/basics/algo/InsertionStartsListener.java

@@ -25,4 +25,5 @@ import basics.route.VehicleRoute;
 public interface InsertionStartsListener extends InsertionListener {
 
 	public void informInsertionStarts(Collection<VehicleRoute> vehicleRoutes, Collection<Job> unassignedJobs);
+	
 }

jsprit-core/src/main/java/basics/algo/RuinListener.java

@@ -0,0 +1,39 @@
+package basics.algo;
+
+import java.util.Collection;
+
+import basics.Job;
+import basics.route.VehicleRoute;
+
+/**
+ * Listener that listens to the ruin-process. It informs whoever is interested about start, end and about a removal of a job.
+ * 
+ * @author schroeder
+ *
+ */
+public interface RuinListener extends SearchStrategyModuleListener{
+	
+	/**
+	 * informs about ruin-start.
+	 * 
+	 * @param routes
+	 */
+	public void ruinStarts(Collection<VehicleRoute> routes);
+	
+	/**
+	 * informs about ruin-end.
+	 * 
+	 * @param routes
+	 * @param unassignedJobs
+	 */
+	public void ruinEnds(Collection<VehicleRoute> routes, Collection<Job> unassignedJobs);
+	
+	/**
+	 * informs if a {@link Job} has been removed from a {@link VehicleRoute}.
+	 * 
+	 * @param job
+	 * @param fromRoute
+	 */
+	public void removed(Job job, VehicleRoute fromRoute);
+	
+}

jsprit-core/src/main/java/basics/algo/RuinListeners.java

@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (C) 2013  Stefan Schroeder
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ * Contributors:
+ *     Stefan Schroeder - initial API and implementation
+ ******************************************************************************/
+package basics.algo;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+
+import basics.Job;
+import basics.route.VehicleRoute;
+
+public class RuinListeners {
+	
+	private Collection<RuinListener> ruinListeners = new ArrayList<RuinListener>();
+
+	public void ruinStarts(Collection<VehicleRoute> routes){
+		for(RuinListener l : ruinListeners) l.ruinStarts(routes);
+	}
+	
+	public void ruinEnds(Collection<VehicleRoute> routes, Collection<Job> unassignedJobs){
+		for(RuinListener l : ruinListeners) l.ruinEnds(routes, unassignedJobs);
+	}
+	
+	public void removed(Job job, VehicleRoute fromRoute){
+		for(RuinListener l : ruinListeners) l.removed(job, fromRoute);
+	}
+	
+	public void addListener(RuinListener ruinListener){
+		ruinListeners.add(ruinListener);
+	}
+	
+	public void removeListener(RuinListener ruinListener){
+		ruinListeners.remove(ruinListener);
+	}
+	
+	public Collection<RuinListener> getListeners(){
+		return Collections.unmodifiableCollection(ruinListeners);
+	}
+}

jsprit-core/src/main/java/basics/algo/SearchStrategy.java

@@ -125,7 +125,8 @@ public class SearchStrategy {
 			VehicleRoutingProblemSolution newSolution = module.runAndGetSolution(lastSolution);
 			lastSolution = newSolution;
 		}
-		solutionCostCalculator.calculateCosts(lastSolution);
+		double costs = solutionCostCalculator.getCosts(lastSolution);
+		lastSolution.setCost(costs);
 		boolean solutionAccepted = solutionAcceptor.acceptSolution(solutions, lastSolution);
 		DiscoveredSolution discoveredSolution = new DiscoveredSolution(lastSolution, solutionAccepted, getName());
 		return discoveredSolution;

jsprit-core/src/main/java/basics/algo/SolutionCostCalculator.java

@@ -21,10 +21,11 @@ import basics.VehicleRoutingProblemSolution;
 public interface SolutionCostCalculator {
 	
 	/**
-	 * This assumes that the solution is modified by setting its costs <br>
+	 * Returns costs of solution.
-	 * <code>solution.setCost(costs);</code>
+	 * 
 	 * @param solution
+	 * @return TODO
 	 */
-	public void calculateCosts(VehicleRoutingProblemSolution solution);
+	public double getCosts(VehicleRoutingProblemSolution solution);
 
 }

jsprit-core/src/main/java/basics/route/ActivityVisitor.java

@@ -14,12 +14,10 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
-import basics.route.TourActivity;
-import basics.route.VehicleRoute;
 
-interface ActivityVisitor {
+public interface ActivityVisitor {
 	
 	public void begin(VehicleRoute route);
 	

jsprit-core/src/main/java/basics/route/FiniteFleetManagerFactory.java

@@ -0,0 +1,20 @@
+package basics.route;
+
+import java.util.Collection;
+
+
+public class FiniteFleetManagerFactory implements VehicleFleetManagerFactory{
+
+	private Collection<Vehicle> vehicles;
+	
+	public FiniteFleetManagerFactory(Collection<Vehicle> vehicles) {
+		super();
+		this.vehicles = vehicles;
+	}
+
+	@Override
+	public VehicleFleetManager createFleetManager() {
+		return new VehicleFleetManagerImpl(vehicles);
+	}
+
+}

jsprit-core/src/main/java/basics/route/InfiniteFleetManagerFactory.java

@@ -0,0 +1,20 @@
+package basics.route;
+
+import java.util.Collection;
+
+
+public class InfiniteFleetManagerFactory implements VehicleFleetManagerFactory{
+
+	private Collection<Vehicle> vehicles;
+	
+	public InfiniteFleetManagerFactory(Collection<Vehicle> vehicles) {
+		super();
+		this.vehicles = vehicles;
+	}
+
+	@Override
+	public VehicleFleetManager createFleetManager() {
+		return new InfiniteVehicles(vehicles);
+	}
+
+}

jsprit-core/src/main/java/basics/route/InfiniteVehicles.java

@@ -14,7 +14,7 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -24,26 +24,14 @@ import java.util.Map;
 
 import org.apache.log4j.Logger;
 
-import basics.route.Vehicle;
 
 class InfiniteVehicles implements VehicleFleetManager{
 	
-//	static class TypeKeyComparator implements Comparator<TypeKey>{
-//
-//		@Override
-//		public int compare(TypeKey k1, TypeKey k2) {
-//			double k1_fix = k1.type.getVehicleCostParams().fix;
-//			double k2_fix = k2.type.getVehicleCostParams().fix;
-//			return (int)(k1_fix - k2_fix);
-//		}
-//		
-//	}
-	
 	private static Logger logger = Logger.getLogger(InfiniteVehicles.class);
 	
-	private Map<TypeKey,Vehicle> types = new HashMap<TypeKey, Vehicle>();
+	private Map<VehicleTypeKey,Vehicle> types = new HashMap<VehicleTypeKey, Vehicle>();
 	
-	private List<TypeKey> sortedTypes = new ArrayList<VehicleFleetManager.TypeKey>();
+	private List<VehicleTypeKey> sortedTypes = new ArrayList<VehicleTypeKey>();
 		
 	public InfiniteVehicles(Collection<Vehicle> vehicles){
 		extractTypes(vehicles);
@@ -57,12 +45,11 @@ class InfiniteVehicles implements VehicleFleetManager{
 
 	private void extractTypes(Collection<Vehicle> vehicles) {
 		for(Vehicle v : vehicles){
-			TypeKey typeKey = new TypeKey(v.getType().getTypeId(),v.getLocationId());
+			VehicleTypeKey typeKey = new VehicleTypeKey(v.getType().getTypeId(),v.getLocationId());
 			types.put(typeKey,v);
 			sortedTypes.add(typeKey);
 
 		}
-//		Collections.sort(sortedTypes, new TypeKeyComparator());
 	}
 
 	
@@ -95,8 +82,8 @@ class InfiniteVehicles implements VehicleFleetManager{
 	@Override
 	public Collection<Vehicle> getAvailableVehicles(String withoutThisType, String locationId) {
 		Collection<Vehicle> vehicles = new ArrayList<Vehicle>();
-		TypeKey thisKey = new TypeKey(withoutThisType,locationId);
+		VehicleTypeKey thisKey = new VehicleTypeKey(withoutThisType,locationId);
-		for(TypeKey key : types.keySet()){
+		for(VehicleTypeKey key : types.keySet()){
 			if(!key.equals(thisKey)){
 				vehicles.add(types.get(key));
 			}

jsprit-core/src/main/java/basics/route/ReverseActivityVisitor.java

@@ -14,12 +14,10 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
-import basics.route.TourActivity;
-import basics.route.VehicleRoute;
 
-interface ReverseActivityVisitor {
+public interface ReverseActivityVisitor {
 	
 	public void begin(VehicleRoute route);
 	

jsprit-core/src/main/java/basics/route/ReverseRouteActivityVisitor.java

@@ -14,16 +14,14 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 
-import basics.route.TourActivity;
-import basics.route.VehicleRoute;
 
-class ReverseRouteActivityVisitor implements RouteVisitor{
+public class ReverseRouteActivityVisitor implements RouteVisitor{
 
 	private Collection<ReverseActivityVisitor> visitors = new ArrayList<ReverseActivityVisitor>();
 	

jsprit-core/src/main/java/basics/route/RouteActivityVisitor.java

@@ -14,15 +14,13 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
 import java.util.ArrayList;
 import java.util.Collection;
 
-import basics.route.TourActivity;
-import basics.route.VehicleRoute;
 
-class RouteActivityVisitor implements RouteVisitor{
+public class RouteActivityVisitor implements RouteVisitor{
 
 	private Collection<ActivityVisitor> visitors = new ArrayList<ActivityVisitor>();
 	

jsprit-core/src/main/java/basics/route/RouteVisitor.java

@@ -14,11 +14,10 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
-import basics.route.VehicleRoute;
 
-interface RouteVisitor {
+public interface RouteVisitor {
 	
 	public void visit(VehicleRoute route);
 

jsprit-core/src/main/java/basics/route/TourActivities.java

@@ -113,6 +113,12 @@ public class TourActivities {
 		return Collections.unmodifiableSet(jobs);
 	}
 	
+	/**
+	 * Returns true if job is in jobList, otherwise false.
+	 * 
+	 * @param job
+	 * @return
+	 */
 	public boolean servesJob(Job job) {
 		return jobs.contains(job);
 	}
@@ -146,13 +152,24 @@ public class TourActivities {
 				}
 			}
 		}
-		if(jobRemoved != activityRemoved) throw new IllegalStateException("job removed, but belonging activity not.");
+		assert jobRemoved == activityRemoved : "job removed, but belonging activity not.";
 		return activityRemoved;
 	}
 
+	/**
+	 * Inserts the specified activity add the specified insertionIndex. Shifts the element currently at that position (if any) and 
+	 * any subsequent elements to the right (adds one to their indices). 
+	 * <p>If specified activity instanceof JobActivity, it adds job to jobList.
+	 * <p>If insertionIndex > tourActivitiies.size(), it just adds the specified act at the end.
+	 * 
+	 * @param insertionIndex
+	 * @param act
+	 * @throws IndexOutOfBoundsException if insertionIndex < 0;
+	 */
 	public void addActivity(int insertionIndex, TourActivity act) {
-		assert insertionIndex >= 0 : "insertionIndex == 0, this cannot be";
+
-		if(tourActivities.contains(act)) throw new IllegalStateException("act " + act + " already in tour. cannot add act twice.");
+		assert insertionIndex >= 0 : "insertionIndex < 0, this cannot be";
+
 		/*
 		 * if 1 --> between start and act(0) --> act(0)
 		 * if 2 && 2 <= acts.size --> between act(0) and act(1) --> act(1)
@@ -166,9 +183,15 @@ public class TourActivities {
 	}
 	
 	/**
+<<<<<<< HEAD
 	 * adds activity.
 	 * 
 	 * @throw {@link IllegalStateException} if same activity is added twice.
+=======
+	 * Adds specified activity at the end of activity-list. 
+	 * <p>If act instanceof JobActivity, it adds underlying job also.
+	 * @throws IllegalStateException if activity-list already contains act.
+>>>>>>> refs/remotes/choose_remote_name/relaxAPI
 	 * @param act
 	 */
 	public void addActivity(TourActivity act){
@@ -184,6 +207,11 @@ public class TourActivities {
 		}
 	}
 
+	/**
+	 * Returns number of jobs.
+	 * 
+	 * @return
+	 */
 	public int jobSize() {
 		return jobs.size();
 	}

jsprit-core/src/main/java/basics/route/VehicleFleetManager.java

@@ -14,27 +14,23 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
+
+import java.util.Collection;
 
 
-class StateTypes {
+public interface VehicleFleetManager {
 	
-//	final static StateId LOAD = new StateIdImpl("load");
+	public abstract void lock(Vehicle vehicle);
 
-	final static String LOAD = "load";
+	public abstract void unlock(Vehicle vehicle);
 
-	final static String LOAD_AT_DEPOT = "loadAtDepot";
+	public abstract boolean isLocked(Vehicle vehicle);
 
-	final static String DURATION = "duration";
+	public abstract void unlockAll();
 
-	final static String LATEST_OPERATION_START_TIME = "latestOST";
+	public abstract Collection<Vehicle> getAvailableVehicles();
 
-	final static String EARLIEST_OPERATION_START_TIME = "earliestOST";
+	public Collection<Vehicle> getAvailableVehicles(String withoutThisType, String locationId);
-
-	static final String COSTS = "costs";
-	
-	final static String FUTURE_PICKS = "futurePicks";
-	
-	final static String PAST_DELIVERIES = "pastDeliveries";
 
 }

jsprit-core/src/main/java/basics/route/VehicleFleetManagerFactory.java

@@ -0,0 +1,7 @@
+package basics.route;
+
+public interface VehicleFleetManagerFactory {
+	
+	public VehicleFleetManager createFleetManager();
+
+}

jsprit-core/src/main/java/basics/route/VehicleFleetManagerImpl.java

@@ -14,7 +14,7 @@
  * You should have received a copy of the GNU Lesser General Public 
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  ******************************************************************************/
-package algorithms;
+package basics.route;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -27,12 +27,11 @@ import java.util.Set;
 
 import org.apache.log4j.Logger;
 
-import basics.route.PenaltyVehicleType;
-import basics.route.Vehicle;
 import basics.route.VehicleImpl.NoVehicle;
 
 
 
+
 class VehicleFleetManagerImpl implements VehicleFleetManager {
 	
 	public VehicleFleetManagerImpl newInstance(Collection<Vehicle> vehicles){
@@ -54,11 +53,11 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 	
 	static class TypeContainer {
 		
-		private TypeKey type;
+		private VehicleTypeKey type;
 
 		private ArrayList<Vehicle> vehicleList;
 		
-		public TypeContainer(TypeKey type) {
+		public TypeContainer(VehicleTypeKey type) {
 			super();
 			this.type = type;
 			vehicleList = new ArrayList<Vehicle>();
@@ -92,9 +91,9 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 	
 	private Set<Vehicle> lockedVehicles;
 
-	private Map<TypeKey,TypeContainer> typeMapOfAvailableVehicles;
+	private Map<VehicleTypeKey,TypeContainer> typeMapOfAvailableVehicles;
 	
-	private Map<TypeKey,Vehicle> penaltyVehicles = new HashMap<VehicleFleetManager.TypeKey, Vehicle>();
+	private Map<VehicleTypeKey,Vehicle> penaltyVehicles = new HashMap<VehicleTypeKey, Vehicle>();
 	
 //	private Map<TypeKey,TypeContainer> typeMapOfAvailablePenaltyVehicles;
 	
@@ -122,8 +121,8 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 	}
 
 	private void makeMap() {
-		typeMapOfAvailableVehicles = new HashMap<TypeKey, TypeContainer>();
+		typeMapOfAvailableVehicles = new HashMap<VehicleTypeKey, TypeContainer>();
-		penaltyVehicles = new HashMap<VehicleFleetManager.TypeKey, Vehicle>();
+		penaltyVehicles = new HashMap<VehicleTypeKey, Vehicle>();
 		for(Vehicle v : vehicles){
 			addVehicle(v);
 		}
@@ -135,11 +134,11 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 		}
 		String typeId = v.getType().getTypeId();
 		if(v.getType() instanceof PenaltyVehicleType){
-			TypeKey typeKey = new TypeKey(typeId,v.getLocationId());
+			VehicleTypeKey typeKey = new VehicleTypeKey(typeId,v.getLocationId());
 			penaltyVehicles.put(typeKey, v);
 		}
 		else{
-			TypeKey typeKey = new TypeKey(v.getType().getTypeId(),v.getLocationId());
+			VehicleTypeKey typeKey = new VehicleTypeKey(v.getType().getTypeId(),v.getLocationId());
 			if(!typeMapOfAvailableVehicles.containsKey(typeKey)){
 				typeMapOfAvailableVehicles.put(typeKey, new TypeContainer(typeKey));
 			}
@@ -150,7 +149,7 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 	private void removeVehicle(Vehicle v){
 		//it might be better to introduce a class PenaltyVehicle
 		if(!(v.getType() instanceof PenaltyVehicleType)){
-			TypeKey key = new TypeKey(v.getType().getTypeId(),v.getLocationId());
+			VehicleTypeKey key = new VehicleTypeKey(v.getType().getTypeId(),v.getLocationId());
 			if(typeMapOfAvailableVehicles.containsKey(key)){
 				typeMapOfAvailableVehicles.get(key).remove(v);
 			}
@@ -167,7 +166,7 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 	@Override
 	public Collection<Vehicle> getAvailableVehicles() {
 		List<Vehicle> vehicles = new ArrayList<Vehicle>();
-		for(TypeKey key : typeMapOfAvailableVehicles.keySet()){
+		for(VehicleTypeKey key : typeMapOfAvailableVehicles.keySet()){
 			if(!typeMapOfAvailableVehicles.get(key).isEmpty()){
 				vehicles.add(typeMapOfAvailableVehicles.get(key).getVehicle());
 			}
@@ -193,8 +192,8 @@ class VehicleFleetManagerImpl implements VehicleFleetManager {
 	@Override
 	public Collection<Vehicle> getAvailableVehicles(String withoutThisType, String withThisLocationId) {
 		List<Vehicle> vehicles = new ArrayList<Vehicle>();
-		TypeKey thisKey = new TypeKey(withoutThisType,withThisLocationId);
+		VehicleTypeKey thisKey = new VehicleTypeKey(withoutThisType,withThisLocationId);
-		for(TypeKey key : typeMapOfAvailableVehicles.keySet()){
+		for(VehicleTypeKey key : typeMapOfAvailableVehicles.keySet()){
 			if(key.equals(thisKey)) continue;
 			if(!typeMapOfAvailableVehicles.get(key).isEmpty()){
 				vehicles.add(typeMapOfAvailableVehicles.get(key).getVehicle());