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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.
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/*
 * Copyright 2013 Red Hat, Inc. and/or its affiliates.
 *
 * 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.optaplanner.examples.tennis.persistence;

import java.io.File;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;

import org.optaplanner.examples.common.app.CommonApp;
import org.optaplanner.examples.common.app.LoggingMain;
import org.optaplanner.examples.common.persistence.AbstractSolutionImporter;
import org.optaplanner.examples.tennis.app.TennisApp;
import org.optaplanner.examples.tennis.domain.Day;
import org.optaplanner.examples.tennis.domain.Team;
import org.optaplanner.examples.tennis.domain.TeamAssignment;
import org.optaplanner.examples.tennis.domain.TennisSolution;
import org.optaplanner.examples.tennis.domain.UnavailabilityPenalty;
import org.optaplanner.persistence.common.api.domain.solution.SolutionFileIO;
import org.optaplanner.persistence.xstream.impl.domain.solution.XStreamSolutionFileIO;

public class TennisGenerator extends LoggingMain {

    public static void main(String[] args) {
        new TennisGenerator().generate();
    }

    protected final SolutionFileIO solutionFileIO;
    protected final File outputDir;

    public TennisGenerator() {
        solutionFileIO = new XStreamSolutionFileIO<>(TennisSolution.class);
        outputDir = new File(CommonApp.determineDataDir(TennisApp.DATA_DIR_NAME), "unsolved");
    }

    public void generate() {
        File outputFile = new File(outputDir, "munich-7teams.xml");
        TennisSolution tennisSolution = createTennisSolution();
        solutionFileIO.write(tennisSolution, outputFile);
        logger.info("Saved: {}", outputFile);
    }

    public TennisSolution createTennisSolution() {
        TennisSolution tennisSolution = new TennisSolution();
        tennisSolution.setId(0L);

        List teamList = new ArrayList<>();
        teamList.add(new Team(0L, "Micha"));
        teamList.add(new Team(1L, "Angelika"));
        teamList.add(new Team(2L, "Katrin"));
        teamList.add(new Team(3L, "Susi"));
        teamList.add(new Team(4L, "Irene"));
        teamList.add(new Team(5L, "Kristina"));
        teamList.add(new Team(6L, "Tobias"));
        tennisSolution.setTeamList(teamList);

        List dayList = new ArrayList<>();
        for (int i = 0; i < 18; i++) {
            dayList.add(new Day(i, i));
        }
        tennisSolution.setDayList(dayList);

        List unavailabilityPenaltyList = new ArrayList<>();
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(0L, teamList.get(4), dayList.get(0)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(1L, teamList.get(6), dayList.get(1)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(2L, teamList.get(2), dayList.get(2)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(3L, teamList.get(4), dayList.get(3)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(4L, teamList.get(4), dayList.get(5)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(5L, teamList.get(2), dayList.get(6)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(6L, teamList.get(1), dayList.get(8)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(7L, teamList.get(2), dayList.get(9)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(8L, teamList.get(4), dayList.get(10)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(9L, teamList.get(4), dayList.get(11)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(10L, teamList.get(6), dayList.get(12)));
        unavailabilityPenaltyList.add(new UnavailabilityPenalty(11L, teamList.get(5), dayList.get(15)));
        tennisSolution.setUnavailabilityPenaltyList(unavailabilityPenaltyList);

        List teamAssignmentList = new ArrayList<>();
        long id = 0L;
        for (Day day : dayList) {
            for (int i = 0; i < 4; i++) {
                teamAssignmentList.add(new TeamAssignment(id, day, i));
                id++;
            }
        }
        tennisSolution.setTeamAssignmentList(teamAssignmentList);

        BigInteger possibleSolutionSize = BigInteger.valueOf(teamList.size()).pow(
                teamAssignmentList.size());
        logger.info("Tennis {} has {} teams, {} days, {} unavailabilityPenalties and {} teamAssignments"
                + " with a search space of {}.",
                "munich-7teams", teamList.size(), dayList.size(), unavailabilityPenaltyList.size(), teamAssignmentList.size(),
                AbstractSolutionImporter.getFlooredPossibleSolutionSize(possibleSolutionSize));
        return tennisSolution;
    }

}