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Added: time windows are now an extension point, allowing conditional …
…time windows
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34 changes: 34 additions & 0 deletions
34
...opper/jsprit/core/problem/solution/route/activity/TimeWindowConditionalOnVehicleType.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| package com.graphhopper.jsprit.core.problem.solution.route.activity; | ||
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| import com.graphhopper.jsprit.core.problem.misc.JobInsertionContext; | ||
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| /** | ||
| * A time window that is only applicable for a specific type of vehicle. | ||
| * When using this, beware of vehicle switching. | ||
| */ | ||
| public class TimeWindowConditionalOnVehicleType extends TimeWindow { | ||
| private final String vehicleTypeId; | ||
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| /** | ||
| * Returns new instance of TimeWindowConditionalOnVehicleType. | ||
| * | ||
| * @param start | ||
| * @param end | ||
| * @param vehicleTypeId | ||
| * @return TimeWindow | ||
| * @throw IllegalArgumentException either if start or end < 0.0 or end < start | ||
| */ | ||
| public static TimeWindow newInstance(double start, double end, String vehicleTypeId) { | ||
| return new TimeWindowConditionalOnVehicleType(start, end, vehicleTypeId); | ||
| } | ||
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| public TimeWindowConditionalOnVehicleType(double start, double end, String vehicleTypeId) { | ||
| super(start, end); | ||
| this.vehicleTypeId = vehicleTypeId; | ||
| } | ||
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| @Override | ||
| public boolean isApplicable(JobInsertionContext insertionContext) { | ||
| return insertionContext.getNewVehicle().getType().getTypeId().equals(vehicleTypeId); | ||
| } | ||
| } |
116 changes: 116 additions & 0 deletions
116
.../src/test/java/com/graphhopper/jsprit/core/algorithm/IgnoreConditionalTimeWindowTest.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,116 @@ | ||
| /* | ||
| * Licensed to GraphHopper GmbH under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with this work for | ||
| * additional information regarding copyright ownership. | ||
| * | ||
| * GraphHopper GmbH licenses this file to you under the Apache License, | ||
| * Version 2.0 (the "License"); you may not use this file except in | ||
| * compliance with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.graphhopper.jsprit.core.algorithm; | ||
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| import org.junit.Assert; | ||
| import org.junit.Test; | ||
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| import com.graphhopper.jsprit.core.algorithm.box.Jsprit; | ||
| import com.graphhopper.jsprit.core.problem.Location; | ||
| import com.graphhopper.jsprit.core.problem.VehicleRoutingProblem; | ||
| import com.graphhopper.jsprit.core.problem.job.Service; | ||
| import com.graphhopper.jsprit.core.problem.solution.VehicleRoutingProblemSolution; | ||
| import com.graphhopper.jsprit.core.problem.solution.route.activity.TimeWindowConditionalOnVehicleType; | ||
| import com.graphhopper.jsprit.core.problem.vehicle.VehicleImpl; | ||
| import com.graphhopper.jsprit.core.problem.vehicle.VehicleType; | ||
| import com.graphhopper.jsprit.core.problem.vehicle.VehicleTypeImpl; | ||
| import com.graphhopper.jsprit.core.util.Solutions; | ||
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| /** | ||
| * Created by marcanpilami on 29/08/2023. This is a test of insertion mechanisms when using a conditional time window. | ||
| */ | ||
| public class IgnoreConditionalTimeWindowTest { | ||
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| @Test | ||
| public void ignoreConditionalTimeWindow(){ | ||
| VehicleTypeImpl.Builder vehicleTypeBuilder1 = VehicleTypeImpl.Builder.newInstance("vehicleType1"); | ||
| VehicleTypeImpl.Builder vehicleTypeBuilder2 = VehicleTypeImpl.Builder.newInstance("vehicleType2"); | ||
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| VehicleType vehicleType1 = vehicleTypeBuilder1.build(); | ||
| VehicleType vehicleType2 = vehicleTypeBuilder2.build(); | ||
| /* | ||
| * get a vehicle-builder and build a vehicle located at (10,10) with type "vehicleType" | ||
| */ | ||
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| VehicleImpl vehicle1,vehicle2; | ||
| { | ||
| VehicleImpl.Builder vehicleBuilder = VehicleImpl.Builder.newInstance("v1"); | ||
| vehicleBuilder.setStartLocation(Location.newInstance(0, 0)); | ||
| vehicleBuilder.setType(vehicleType1); | ||
| vehicleBuilder.setEarliestStart(10).setLatestArrival(50); | ||
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| vehicle1 = vehicleBuilder.build(); | ||
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| vehicleBuilder = VehicleImpl.Builder.newInstance("v2"); | ||
| vehicleBuilder.setStartLocation(Location.newInstance(0, 0)); | ||
| vehicleBuilder.setType(vehicleType2); | ||
| vehicleBuilder.setEarliestStart(10).setLatestArrival(50); | ||
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| vehicle2 = vehicleBuilder.build(); | ||
| } | ||
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| // First service is impossible for vehicle v1 (TW after vehicle return), but possible for all others which ignore the TW. | ||
| Service service1 = Service.Builder.newInstance("s1").setLocation(Location.newInstance(0, 0)) | ||
| .setServiceTime(1.).setTimeWindow(TimeWindowConditionalOnVehicleType.newInstance(100,100, "vehicleType1")).build(); | ||
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| VehicleRoutingProblem vrp1 = VehicleRoutingProblem.Builder.newInstance() | ||
| .addVehicle(vehicle1) | ||
| .addJob(service1) | ||
| .setFleetSize(VehicleRoutingProblem.FleetSize.FINITE) | ||
| .build(); | ||
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| VehicleRoutingAlgorithm vra1 = Jsprit.createAlgorithm(vrp1); | ||
| vra1.setMaxIterations(50); | ||
| VehicleRoutingProblemSolution solution1 = Solutions.bestOf(vra1.searchSolutions()); | ||
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| Assert.assertEquals(1, solution1.getUnassignedJobs().size()); | ||
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| // Second service is possible for v1. | ||
| Service service2 = Service.Builder.newInstance("s2").setLocation(Location.newInstance(0, 0)) | ||
| .setServiceTime(1.).setTimeWindow(TimeWindowConditionalOnVehicleType.newInstance(11, 11, "vehicleType1")).build(); | ||
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| VehicleRoutingProblem vrp2 = VehicleRoutingProblem.Builder.newInstance() | ||
| .addVehicle(vehicle1) | ||
| .addJob(service1) | ||
| .addJob(service2) | ||
| .setFleetSize(VehicleRoutingProblem.FleetSize.FINITE) | ||
| .build(); | ||
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| VehicleRoutingAlgorithm vra2 = Jsprit.createAlgorithm(vrp2); | ||
| vra2.setMaxIterations(50); | ||
| VehicleRoutingProblemSolution solution2 = Solutions.bestOf(vra2.searchSolutions()); | ||
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| Assert.assertEquals(1, solution2.getUnassignedJobs().size()); | ||
| Assert.assertEquals(1, solution2.getRoutes().size()); | ||
| Assert.assertEquals(1, solution2.getRoutes().iterator().next().getActivities().size()); | ||
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| // First service should be possible for v2. | ||
| VehicleRoutingProblem vrp3 = VehicleRoutingProblem.Builder.newInstance() | ||
| .addVehicle(vehicle2) | ||
| .addJob(service1) | ||
| .setFleetSize(VehicleRoutingProblem.FleetSize.FINITE) | ||
| .build(); | ||
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| VehicleRoutingAlgorithm vra3 = Jsprit.createAlgorithm(vrp3); | ||
| vra3.setMaxIterations(50); | ||
| VehicleRoutingProblemSolution solution3 = Solutions.bestOf(vra3.searchSolutions()); | ||
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| Assert.assertEquals(0, solution3.getUnassignedJobs().size()); | ||
| } | ||
| } |