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Code Issues Releases Wiki Activity

ability to exclude unnecessary constraints

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This commit is contained in:
muzuro 2015-09-02 20:59:52 +03:00
parent 1664f2d338
commit ea6fac5db3
3 changed files with 51 additions and 7 deletions
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2
jsprit-core/src/main/java/jsprit/core/problem/constraint/ServiceLoadActivityLevelConstraint.java
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@ -32,7 +32,7 @@ import jsprit.core.problem.solution.route.state.RouteAndActivityStateGetter;
* @author schroeder * @author schroeder
* *
*/ */
class ServiceLoadActivityLevelConstraint implements HardActivityConstraint { public class ServiceLoadActivityLevelConstraint implements HardActivityConstraint {
private RouteAndActivityStateGetter stateManager; private RouteAndActivityStateGetter stateManager;

2
jsprit-core/src/main/java/jsprit/core/problem/constraint/ServiceLoadRouteLevelConstraint.java
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@ -33,7 +33,7 @@ import jsprit.core.problem.solution.route.state.RouteAndActivityStateGetter;
* @author stefan * @author stefan
* *
*/ */
class ServiceLoadRouteLevelConstraint implements HardRouteConstraint { public class ServiceLoadRouteLevelConstraint implements HardRouteConstraint {
private RouteAndActivityStateGetter stateManager; private RouteAndActivityStateGetter stateManager;

54
jsprit-core/src/test/java/jsprit/core/algorithm/InitialRoutesTest.java
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@ -18,12 +18,27 @@
package jsprit.core.algorithm; package jsprit.core.algorithm;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Collection;
import java.util.List;
import jsprit.core.algorithm.box.GreedySchrimpfFactory; import jsprit.core.algorithm.box.GreedySchrimpfFactory;
import jsprit.core.algorithm.box.Jsprit; import jsprit.core.algorithm.box.Jsprit;
import jsprit.core.algorithm.box.Jsprit.Builder;
import jsprit.core.algorithm.box.SchrimpfFactory; import jsprit.core.algorithm.box.SchrimpfFactory;
import jsprit.core.algorithm.state.StateManager;
import jsprit.core.algorithm.state.UpdateEndLocationIfRouteIsOpen;
import jsprit.core.algorithm.state.UpdateVariableCosts;
import jsprit.core.problem.AbstractActivity; import jsprit.core.problem.AbstractActivity;
import jsprit.core.problem.Location; import jsprit.core.problem.Location;
import jsprit.core.problem.VehicleRoutingProblem; import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.constraint.ConstraintManager;
import jsprit.core.problem.constraint.ConstraintManager.Priority;
import jsprit.core.problem.constraint.ServiceLoadActivityLevelConstraint;
import jsprit.core.problem.constraint.ServiceLoadRouteLevelConstraint;
import jsprit.core.problem.io.VrpXMLReader; import jsprit.core.problem.io.VrpXMLReader;
import jsprit.core.problem.job.Job; import jsprit.core.problem.job.Job;
import jsprit.core.problem.job.Service; import jsprit.core.problem.job.Service;
@ -38,13 +53,9 @@ import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.reporting.SolutionPrinter; import jsprit.core.reporting.SolutionPrinter;
import jsprit.core.util.Coordinate; import jsprit.core.util.Coordinate;
import jsprit.core.util.Solutions; import jsprit.core.util.Solutions;
import org.junit.Test; import org.junit.Test;
import java.util.Collection;
import java.util.List;
import static org.junit.Assert.*;
public class InitialRoutesTest { public class InitialRoutesTest {
@Test @Test
@ -395,4 +406,37 @@ public class InitialRoutesTest {
vra.searchSolutions(); vra.searchSolutions();
assertTrue(true); assertTrue(true);
} }
@Test
public void buildWithoutTimeConstraints() {
Service s1 = Service.Builder.newInstance("s1").setLocation(Location.newInstance(0,10)).addSizeDimension(0, 10).build();
Service s2 = Service.Builder.newInstance("s2").setLocation(Location.newInstance(10,20)).addSizeDimension(0, 12).build();
VehicleTypeImpl vt = VehicleTypeImpl.Builder.newInstance("vt").addCapacityDimension(0, 15).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setType(vt).setStartLocation(Location.newInstance(0,0)).build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().addJob(s1).addJob(s2).addVehicle(v).build();
Builder algBuilder = Jsprit.Builder.newInstance(vrp).addCoreStateAndConstraintStuff(false);
// only required constraints
StateManager stateManager = new StateManager(vrp);
ConstraintManager constraintManager = new ConstraintManager(vrp, stateManager);
constraintManager.addConstraint(new ServiceLoadRouteLevelConstraint(stateManager));
constraintManager.addConstraint(new ServiceLoadActivityLevelConstraint(stateManager), Priority.LOW);
stateManager.updateLoadStates();
stateManager.addStateUpdater(new UpdateEndLocationIfRouteIsOpen());
stateManager.addStateUpdater(new UpdateVariableCosts(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager));
algBuilder.setStateAndConstraintManager(stateManager, constraintManager);
VehicleRoutingAlgorithm vra = algBuilder.buildAlgorithm();
vra.setMaxIterations(20);
Collection<VehicleRoutingProblemSolution> searchSolutions = vra.searchSolutions();
VehicleRoutingProblemSolution bestOf = Solutions.bestOf(searchSolutions);
//ensure 2 routes
assertEquals(2, bestOf.getRoutes().size());
//ensure no time information in first service of first route
assertEquals(0, bestOf.getRoutes().iterator().next().getActivities().iterator().next().getArrTime(), 0.001);
}
} }