@Override
public void informInsertionEnds(Collection<VehicleRoute> vehicleRoutes) {
List<VehicleRoute> routes = new ArrayList<VehicleRoute>(vehicleRoutes);
for (VehicleRoute route : routes) {
if (route.isEmpty()) {
fleetManager.unlock(route.getVehicle());
vehicleRoutes.remove(route);
}
}
}
public void write(String filename) {
if (!filename.endsWith(".xml")) filename += ".xml";
log.info("write vrp: " + filename);
XMLConf xmlConfig = new XMLConf();
xmlConfig.setFileName(filename);
xmlConfig.setRootElementName("problem");
xmlConfig.setAttributeSplittingDisabled(true);
xmlConfig.setDelimiterParsingDisabled(true);
writeProblemType(xmlConfig);
writeVehiclesAndTheirTypes(xmlConfig);
// might be sorted?
List<Job> jobs = new ArrayList<Job>();
jobs.addAll(vrp.getJobs().values());
for (VehicleRoute r : vrp.getInitialVehicleRoutes()) {
jobs.addAll(r.getTourActivities().getJobs());
}
writeServices(xmlConfig, jobs);
writeShipments(xmlConfig, jobs);
writeInitialRoutes(xmlConfig);
writeSolutions(xmlConfig);
OutputFormat format = new OutputFormat();
format.setIndenting(true);
format.setIndent(5);
try {
Document document = xmlConfig.createDoc();
Element element = document.getDocumentElement();
element.setAttribute("xmlns", "http://www.w3schools.com");
element.setAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
element.setAttribute("xsi:schemaLocation", "http://www.w3schools.com vrp_xml_schema.xsd");
} catch (ConfigurationException e) {
logger.error("Exception:", e);
e.printStackTrace();
System.exit(1);
}
try {
Writer out = new FileWriter(filename);
XMLSerializer serializer = new XMLSerializer(out, format);
serializer.serialize(xmlConfig.getDocument());
out.close();
} catch (IOException e) {
logger.error("Exception:", e);
e.printStackTrace();
System.exit(1);
}
}
private boolean hasActivityIn(Collection<VehicleRoute> routes, String jobId) {
boolean isInRoute = false;
for (VehicleRoute route : routes) {
for (TourActivity act : route.getActivities()) {
if (act instanceof TourActivity.JobActivity) {
if (((TourActivity.JobActivity) act).getJob().getId().equals(jobId)) isInRoute = true;
}
}
}
return isInRoute;
}
private double getDeltaAbsoluteFixCost(VehicleRoute route, Vehicle newVehicle, Job job) {
Capacity load = Capacity.addup(getCurrentMaxLoadInRoute(route), job.getSize());
// double load = getCurrentMaxLoadInRoute(route) + job.getCapacityDemand();
double currentFix = 0.0;
if (route.getVehicle() != null) {
if (!(route.getVehicle() instanceof NoVehicle)) {
currentFix += route.getVehicle().getType().getVehicleCostParams().fix;
}
}
if (!newVehicle.getType().getCapacityDimensions().isGreaterOrEqual(load)) {
return Double.MAX_VALUE;
}
return newVehicle.getType().getVehicleCostParams().fix - currentFix;
}
@Override
public void handleJobInsertion(Job job, InsertionData iData, VehicleRoute route) {
if (job instanceof Service) {
route.setVehicleAndDepartureTime(
iData.getSelectedVehicle(), iData.getVehicleDepartureTime());
if (!iData.getSelectedVehicle().isReturnToDepot()) {
if (iData.getDeliveryInsertionIndex()
>= route.getTourActivities().getActivities().size()) {
setEndLocation(route, (Service) job);
}
}
TourActivity activity = vehicleRoutingProblem.copyAndGetActivities(job).get(0);
route.getTourActivities().addActivity(iData.getDeliveryInsertionIndex(), activity);
} else delegator.handleJobInsertion(job, iData, route);
}
public void visit(TourActivity activity) {
for (Vehicle vehicle : vehicles) {
double latestArrTimeAtPrevAct =
latest_arrTimes_at_prevAct[vehicle.getVehicleTypeIdentifier().getIndex()];
Location prevLocation = location_of_prevAct[vehicle.getVehicleTypeIdentifier().getIndex()];
double potentialLatestArrivalTimeAtCurrAct =
latestArrTimeAtPrevAct
- transportCosts.getBackwardTransportTime(
activity.getLocation(),
prevLocation,
latestArrTimeAtPrevAct,
route.getDriver(),
vehicle)
- activity.getOperationTime();
double latestArrivalTime =
Math.min(
activity.getTheoreticalLatestOperationStartTime(),
potentialLatestArrivalTimeAtCurrAct);
if (latestArrivalTime < activity.getTheoreticalEarliestOperationStartTime()) {
stateManager.putTypedInternalRouteState(
route, vehicle, InternalStates.SWITCH_NOT_FEASIBLE, true);
}
stateManager.putInternalTypedActivityState(
activity, vehicle, InternalStates.LATEST_OPERATION_START_TIME, latestArrivalTime);
latest_arrTimes_at_prevAct[vehicle.getVehicleTypeIdentifier().getIndex()] = latestArrivalTime;
location_of_prevAct[vehicle.getVehicleTypeIdentifier().getIndex()] = activity.getLocation();
}
}
@Test
public void futureMaxLoatAtAct1ShouldBe15() {
stateManager.informInsertionStarts(Arrays.asList(serviceRoute), Collections.<Job>emptyList());
Capacity atAct1 =
stateManager.getActivityState(
serviceRoute.getActivities().get(0), InternalStates.FUTURE_MAXLOAD, Capacity.class);
assertEquals(15, atAct1.get(0));
}
@Override
public void handleJobInsertion(Job job, InsertionData iData, VehicleRoute route) {
if (job instanceof Shipment) {
List<AbstractActivity> acts = vehicleRoutingProblem.copyAndGetActivities(job);
TourActivity pickupShipment = acts.get(0);
TourActivity deliverShipment = acts.get(1);
route.setVehicleAndDepartureTime(
iData.getSelectedVehicle(), iData.getVehicleDepartureTime());
if (!iData.getSelectedVehicle().isReturnToDepot()) {
if (iData.getDeliveryInsertionIndex() >= route.getActivities().size()) {
setEndLocation(route, (Shipment) job);
}
}
route.getTourActivities().addActivity(iData.getDeliveryInsertionIndex(), deliverShipment);
route.getTourActivities().addActivity(iData.getPickupInsertionIndex(), pickupShipment);
} else delegator.handleJobInsertion(job, iData, route);
}
public void insertJob(Job job, InsertionData insertionData, VehicleRoute vehicleRoute) {
insertionListeners.informBeforeJobInsertion(job, insertionData, vehicleRoute);
if (insertionData == null || (insertionData instanceof NoInsertionFound))
throw new IllegalStateException("insertionData null. cannot insert job.");
if (job == null) throw new IllegalStateException("cannot insert null-job");
if (!(vehicleRoute.getVehicle().getId().equals(insertionData.getSelectedVehicle().getId()))) {
insertionListeners.informVehicleSwitched(
vehicleRoute, vehicleRoute.getVehicle(), insertionData.getSelectedVehicle());
vehicleRoute.setVehicleAndDepartureTime(
insertionData.getSelectedVehicle(), insertionData.getVehicleDepartureTime());
}
jobInsertionHandler.handleJobInsertion(job, insertionData, vehicleRoute);
insertionListeners.informJobInserted(
job, vehicleRoute, insertionData.getInsertionCost(), insertionData.getAdditionalTime());
}
@Test
public void when_shipmentroute_loadAtAct3ShouldBe10() {
stateManager.informInsertionStarts(Arrays.asList(shipment_route), Collections.<Job>emptyList());
Capacity atAct =
stateManager.getActivityState(
shipment_route.getActivities().get(2), InternalStates.LOAD, Capacity.class);
assertEquals(10, atAct.get(0));
}
@Test
public void when_shipmentroute_pastMaxLoatAtAct4ShouldBe15() {
stateManager.informInsertionStarts(Arrays.asList(shipment_route), Collections.<Job>emptyList());
Capacity atAct =
stateManager.getActivityState(
shipment_route.getActivities().get(3), InternalStates.PAST_MAXLOAD, Capacity.class);
assertEquals(15, atAct.get(0));
}
@Test
public void pastMaxLoatAtAct2ShouldBe10() {
stateManager.informInsertionStarts(Arrays.asList(serviceRoute), Collections.<Job>emptyList());
Capacity atAct2 =
stateManager.getActivityState(
serviceRoute.getActivities().get(1), InternalStates.PAST_MAXLOAD, Capacity.class);
assertEquals(15, atAct2.get(0));
}
@Test
public void whenSolvingProblem2_nuActsShouldBe6() {
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
new VrpXMLReader(vrpBuilder)
.read("src/test/resources/simpleProblem_inclShipments_iniRoutes.xml");
VehicleRoutingProblem vrp = vrpBuilder.build();
VehicleRoutingAlgorithm vra = new SchrimpfFactory().createAlgorithm(vrp);
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
VehicleRoutingProblemSolution solution = Solutions.bestOf(solutions);
int nuActs = 0;
for (VehicleRoute r : solution.getRoutes()) {
nuActs += r.getActivities().size();
}
assertEquals(6, nuActs);
}
@Override
public void visit(VehicleRoute route) {
begin(route);
Iterator<TourActivity> revIterator = route.getTourActivities().reverseActivityIterator();
while (revIterator.hasNext()) {
visit(revIterator.next());
}
finish();
}
@Test
public void when_pdroute_loadAtAct2ShouldBe10() {
stateManager.informInsertionStarts(
Arrays.asList(pickup_delivery_route), Collections.<Job>emptyList());
Capacity atAct2 =
stateManager.getActivityState(
pickup_delivery_route.getActivities().get(1), InternalStates.LOAD, Capacity.class);
assertEquals(10, atAct2.get(0));
}
@Test
public void when_pdroute_pastMaxLoatAtAct1ShouldBe15() {
stateManager.informInsertionStarts(
Arrays.asList(pickup_delivery_route), Collections.<Job>emptyList());
Capacity atAct1 =
stateManager.getActivityState(
pickup_delivery_route.getActivities().get(0),
InternalStates.PAST_MAXLOAD,
Capacity.class);
assertEquals(15, atAct1.get(0));
}
@Test
public void whenSolvingProblem2_nuJobsInSolutionShouldBe4() {
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
new VrpXMLReader(vrpBuilder)
.read("src/test/resources/simpleProblem_inclShipments_iniRoutes.xml");
VehicleRoutingProblem vrp = vrpBuilder.build();
VehicleRoutingAlgorithm vra = new SchrimpfFactory().createAlgorithm(vrp);
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
VehicleRoutingProblemSolution solution = Solutions.bestOf(solutions);
SolutionPrinter.print(vrp, solution, SolutionPrinter.Print.VERBOSE);
int jobsInSolution = 0;
for (VehicleRoute r : solution.getRoutes()) {
jobsInSolution += r.getTourActivities().jobSize();
}
assertEquals(4, jobsInSolution);
}
private void writeInitialRoutes(XMLConf xmlConfig) {
if (vrp.getInitialVehicleRoutes().isEmpty()) return;
String path = "initialRoutes.route";
int routeCounter = 0;
for (VehicleRoute route : vrp.getInitialVehicleRoutes()) {
xmlConfig.setProperty(path + "(" + routeCounter + ").driverId", route.getDriver().getId());
xmlConfig.setProperty(path + "(" + routeCounter + ").vehicleId", route.getVehicle().getId());
xmlConfig.setProperty(path + "(" + routeCounter + ").start", route.getStart().getEndTime());
int actCounter = 0;
for (TourActivity act : route.getTourActivities().getActivities()) {
xmlConfig.setProperty(
path + "(" + routeCounter + ").act(" + actCounter + ")[@type]", act.getName());
if (act instanceof JobActivity) {
Job job = ((JobActivity) act).getJob();
if (job instanceof Service) {
xmlConfig.setProperty(
path + "(" + routeCounter + ").act(" + actCounter + ").serviceId", job.getId());
} else if (job instanceof Shipment) {
xmlConfig.setProperty(
path + "(" + routeCounter + ").act(" + actCounter + ").shipmentId", job.getId());
} else {
throw new IllegalStateException(
"cannot write solution correctly since job-type is not know. make sure you use either service or shipment, or another writer");
}
}
xmlConfig.setProperty(
path + "(" + routeCounter + ").act(" + actCounter + ").arrTime", act.getArrTime());
xmlConfig.setProperty(
path + "(" + routeCounter + ").act(" + actCounter + ").endTime", act.getEndTime());
actCounter++;
}
xmlConfig.setProperty(path + "(" + routeCounter + ").end", route.getEnd().getArrTime());
routeCounter++;
}
}
private double getDeltaRelativeFixCost(VehicleRoute route, Vehicle newVehicle, Job job) {
Capacity currentLoad = getCurrentMaxLoadInRoute(route);
// int currentLoad = getCurrentMaxLoadInRoute(route);
Capacity load = Capacity.addup(currentLoad, job.getSize());
// double load = currentLoad + job.getCapacityDemand();
double currentRelFix = 0.0;
if (route.getVehicle() != null) {
if (!(route.getVehicle() instanceof NoVehicle)) {
currentRelFix +=
route.getVehicle().getType().getVehicleCostParams().fix
* Capacity.divide(
currentLoad, route.getVehicle().getType().getCapacityDimensions());
}
}
if (!newVehicle.getType().getCapacityDimensions().isGreaterOrEqual(load)) {
return Double.MAX_VALUE;
}
double relativeFixCost =
newVehicle.getType().getVehicleCostParams().fix
* (Capacity.divide(load, newVehicle.getType().getCapacityDimensions()))
- currentRelFix;
return relativeFixCost;
}
private void writeSolutions(XMLConf xmlConfig) {
if (solutions == null) return;
String solutionPath = "solutions.solution";
int counter = 0;
for (VehicleRoutingProblemSolution solution : solutions) {
xmlConfig.setProperty(solutionPath + "(" + counter + ").cost", solution.getCost());
int routeCounter = 0;
for (VehicleRoute route : solution.getRoutes()) {
// xmlConfig.setProperty(solutionPath + "(" + counter + ").routes.route(" + routeCounter
// + ").cost", route.getCost());
xmlConfig.setProperty(
solutionPath + "(" + counter + ").routes.route(" + routeCounter + ").driverId",
route.getDriver().getId());
xmlConfig.setProperty(
solutionPath + "(" + counter + ").routes.route(" + routeCounter + ").vehicleId",
route.getVehicle().getId());
xmlConfig.setProperty(
solutionPath + "(" + counter + ").routes.route(" + routeCounter + ").start",
route.getStart().getEndTime());
int actCounter = 0;
for (TourActivity act : route.getTourActivities().getActivities()) {
xmlConfig.setProperty(
solutionPath
+ "("
+ counter
+ ").routes.route("
+ routeCounter
+ ").act("
+ actCounter
+ ")[@type]",
act.getName());
if (act instanceof JobActivity) {
Job job = ((JobActivity) act).getJob();
if (job instanceof Service) {
xmlConfig.setProperty(
solutionPath
+ "("
+ counter
+ ").routes.route("
+ routeCounter
+ ").act("
+ actCounter
+ ").serviceId",
job.getId());
} else if (job instanceof Shipment) {
xmlConfig.setProperty(
solutionPath
+ "("
+ counter
+ ").routes.route("
+ routeCounter
+ ").act("
+ actCounter
+ ").shipmentId",
job.getId());
} else {
throw new IllegalStateException(
"cannot write solution correctly since job-type is not know. make sure you use either service or shipment, or another writer");
}
}
xmlConfig.setProperty(
solutionPath
+ "("
+ counter
+ ").routes.route("
+ routeCounter
+ ").act("
+ actCounter
+ ").arrTime",
act.getArrTime());
xmlConfig.setProperty(
solutionPath
+ "("
+ counter
+ ").routes.route("
+ routeCounter
+ ").act("
+ actCounter
+ ").endTime",
act.getEndTime());
actCounter++;
}
xmlConfig.setProperty(
solutionPath + "(" + counter + ").routes.route(" + routeCounter + ").end",
route.getEnd().getArrTime());
routeCounter++;
}
int unassignedJobCounter = 0;
for (Job unassignedJob : solution.getUnassignedJobs()) {
xmlConfig.setProperty(
solutionPath
+ "("
+ counter
+ ").unassignedJobs.job("
+ unassignedJobCounter
+ ")[@id]",
unassignedJob.getId());
unassignedJobCounter++;
}
counter++;
}
}
private static String getVehicleString(VehicleRoute route) {
return route.getVehicle().getId();
}
private void setEndLocation(VehicleRoute route, Shipment shipment) {
route.getEnd().setLocationId(shipment.getDeliveryLocation().getId());
}
@Override
public Collection<Vehicle> get(VehicleRoute route) {
return Arrays.asList(route.getVehicle());
}
static ScoredJob getScoredJob(
Collection<VehicleRoute> routes,
Job unassignedJob,
JobInsertionCostsCalculator insertionCostsCalculator,
ScoringFunction scoringFunction) {
InsertionData best = null;
InsertionData secondBest = null;
VehicleRoute bestRoute = null;
double benchmark = Double.MAX_VALUE;
for (VehicleRoute route : routes) {
if (secondBest != null) {
benchmark = secondBest.getInsertionCost();
}
InsertionData iData =
insertionCostsCalculator.getInsertionData(
route,
unassignedJob,
NO_NEW_VEHICLE_YET,
NO_NEW_DEPARTURE_TIME_YET,
NO_NEW_DRIVER_YET,
benchmark);
if (iData instanceof InsertionData.NoInsertionFound) continue;
if (best == null) {
best = iData;
bestRoute = route;
} else if (iData.getInsertionCost() < best.getInsertionCost()) {
secondBest = best;
best = iData;
bestRoute = route;
} else if (secondBest == null || (iData.getInsertionCost() < secondBest.getInsertionCost())) {
secondBest = iData;
}
}
VehicleRoute emptyRoute = VehicleRoute.emptyRoute();
InsertionData iData =
insertionCostsCalculator.getInsertionData(
emptyRoute,
unassignedJob,
NO_NEW_VEHICLE_YET,
NO_NEW_DEPARTURE_TIME_YET,
NO_NEW_DRIVER_YET,
benchmark);
if (!(iData instanceof InsertionData.NoInsertionFound)) {
if (best == null) {
best = iData;
bestRoute = emptyRoute;
} else if (iData.getInsertionCost() < best.getInsertionCost()) {
secondBest = best;
best = iData;
bestRoute = emptyRoute;
} else if (secondBest == null || (iData.getInsertionCost() < secondBest.getInsertionCost())) {
secondBest = iData;
}
}
if (best == null) {
return new RegretInsertion.BadJob(unassignedJob);
}
double score = score(unassignedJob, best, secondBest, scoringFunction);
ScoredJob scoredJob;
if (bestRoute == emptyRoute) {
scoredJob = new ScoredJob(unassignedJob, score, best, bestRoute, true);
} else scoredJob = new ScoredJob(unassignedJob, score, best, bestRoute, false);
return scoredJob;
}
private void setEndLocation(VehicleRoute route, Service service) {
route.getEnd().setLocationId(service.getLocation().getId());
}
private static void printVerbose(
PrintWriter out, VehicleRoutingProblem problem, VehicleRoutingProblemSolution solution) {
String leftAlgin = "| %-7s | %-20s | %-21s | %-15s | %-15s | %-15s | %-15s |%n";
out.format(
"+--------------------------------------------------------------------------------------------------------------------------------+%n");
out.printf(
"| detailed solution |%n");
out.format(
"+---------+----------------------+-----------------------+-----------------+-----------------+-----------------+-----------------+%n");
out.printf(
"| route | vehicle | activity | job | arrTime | endTime | costs |%n");
int routeNu = 1;
for (VehicleRoute route : solution.getRoutes()) {
out.format(
"+---------+----------------------+-----------------------+-----------------+-----------------+-----------------+-----------------+%n");
double costs = 0;
out.format(
leftAlgin,
routeNu,
getVehicleString(route),
route.getStart().getName(),
"-",
"undef",
Math.round(route.getStart().getEndTime()),
Math.round(costs));
TourActivity prevAct = route.getStart();
for (TourActivity act : route.getActivities()) {
String jobId;
if (act instanceof JobActivity) {
jobId = ((JobActivity) act).getJob().getId();
} else {
jobId = "-";
}
double c =
problem
.getTransportCosts()
.getTransportCost(
prevAct.getLocation(),
act.getLocation(),
prevAct.getEndTime(),
route.getDriver(),
route.getVehicle());
c +=
problem
.getActivityCosts()
.getActivityCost(act, act.getArrTime(), route.getDriver(), route.getVehicle());
costs += c;
out.format(
leftAlgin,
routeNu,
getVehicleString(route),
act.getName(),
jobId,
Math.round(act.getArrTime()),
Math.round(act.getEndTime()),
Math.round(costs));
prevAct = act;
}
double c =
problem
.getTransportCosts()
.getTransportCost(
prevAct.getLocation(),
route.getEnd().getLocation(),
prevAct.getEndTime(),
route.getDriver(),
route.getVehicle());
c +=
problem
.getActivityCosts()
.getActivityCost(
route.getEnd(),
route.getEnd().getArrTime(),
route.getDriver(),
route.getVehicle());
costs += c;
out.format(
leftAlgin,
routeNu,
getVehicleString(route),
route.getEnd().getName(),
"-",
Math.round(route.getEnd().getArrTime()),
"undef",
Math.round(costs));
routeNu++;
}
out.format(
"+--------------------------------------------------------------------------------------------------------------------------------+%n");
if (!solution.getUnassignedJobs().isEmpty()) {
out.format("+----------------+%n");
out.format("| unassignedJobs |%n");
out.format("+----------------+%n");
String unassignedJobAlgin = "| %-14s |%n";
for (Job j : solution.getUnassignedJobs()) {
out.format(unassignedJobAlgin, j.getId());
}
out.format("+----------------+%n");
}
}