org.optaplanner.examples.travelingtournament.persistence.TravelingTournamentSolutionExporter Maven / Gradle / Ivy

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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 2010 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.optaplanner.examples.travelingtournament.persistence;

import java.io.IOException;

import org.optaplanner.core.impl.solution.Solution;
import org.optaplanner.examples.common.persistence.AbstractTxtSolutionExporter;
import org.optaplanner.examples.travelingtournament.domain.Day;
import org.optaplanner.examples.travelingtournament.domain.Match;
import org.optaplanner.examples.travelingtournament.domain.Team;
import org.optaplanner.examples.travelingtournament.domain.TravelingTournament;

public class TravelingTournamentSolutionExporter extends AbstractTxtSolutionExporter {

    private static final String OUTPUT_FILE_SUFFIX = ".trick.txt";

    public static void main(String[] args) {
        new TravelingTournamentSolutionExporter().convertAll();
    }

    public TravelingTournamentSolutionExporter() {
        super(new TravelingTournamentDao());
    }

    @Override
    protected String getOutputFileSuffix() {
        return OUTPUT_FILE_SUFFIX;
    }

    public TxtOutputBuilder createTxtOutputBuilder() {
        return new TravelingTournamentOutputBuilder();
    }

    public class TravelingTournamentOutputBuilder extends TxtOutputBuilder {

        private TravelingTournament travelingTournament;

        public void setSolution(Solution solution) {
            travelingTournament = (TravelingTournament) solution;
        }

        public void writeSolution() throws IOException {
            int maximumTeamNameLength = 0;
            for (Team team : travelingTournament.getTeamList()) {
                if (team.getName().length() > maximumTeamNameLength) {
                    maximumTeamNameLength = team.getName().length();
                }
            }
            for (Team team : travelingTournament.getTeamList()) {
                bufferedWriter.write(String.format("%-" + (maximumTeamNameLength + 3) + "s", team.getName()));
            }
            bufferedWriter.write("\n");
            for (Team team : travelingTournament.getTeamList()) {
                bufferedWriter.write(String.format("%-" + (maximumTeamNameLength + 3) + "s", team.getName().replaceAll("[\\w\\d]", "-")));
            }
            bufferedWriter.write("\n");
            for (Day day : travelingTournament.getDayList()) {
                for (Team team : travelingTournament.getTeamList()) {
                    // this could be put in a hashmap first for performance
                    boolean opponentIsHome = false;
                    Team opponentTeam = null;
                    for (Match match : travelingTournament.getMatchList()) {
                        if (match.getDay().equals(day)) {
                            if (match.getHomeTeam().equals(team)) {
                                opponentIsHome = false;
                                opponentTeam = match.getAwayTeam();
                            } else if (match.getAwayTeam().equals(team)) {
                                opponentIsHome = true;
                                opponentTeam = match.getHomeTeam();
                            }
                        }
                    }
                    String opponentName = (opponentIsHome ? "@" : "") + opponentTeam.getName();
                    bufferedWriter.write(String.format("%-" + (maximumTeamNameLength + 3) + "s", opponentName));
                }
                bufferedWriter.write("\n");
            }
        }

    }

}