org.drools.planner.examples.tsp.solver.move.factory.SubTourChangeMoveFactory Maven / Gradle / Ivy

/*
 * Copyright 2011 JBoss Inc
 *
 * Licensed 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.
 */

package org.drools.planner.examples.tsp.solver.move.factory;

import java.util.ArrayList;
import java.util.List;

import org.drools.planner.core.move.Move;
import org.drools.planner.core.move.factory.CachedMoveFactory;
import org.drools.planner.core.solution.Solution;
import org.drools.planner.examples.tsp.domain.CityAssignment;
import org.drools.planner.examples.tsp.domain.TravelingSalesmanTour;
import org.drools.planner.examples.tsp.solver.move.SubTourChangeMove;

public class SubTourChangeMoveFactory extends CachedMoveFactory {

    public List createCachedMoveList(Solution solution) {
        TravelingSalesmanTour travelingSalesmanTour = (TravelingSalesmanTour) solution;
        List moveList = new ArrayList();
        List cityAssignmentList = travelingSalesmanTour.getCityAssignmentList();
        for (CityAssignment startCityAssignment : cityAssignmentList) {
            for (CityAssignment endCityAssignment : cityAssignmentList) {
                for (CityAssignment toAfterCityAssignment : cityAssignmentList) {
                    moveList.add(new SubTourChangeMove(startCityAssignment, endCityAssignment, toAfterCityAssignment));
                }
            }
        }
        return moveList;
    }

}