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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.common.persistence;

import java.io.File;
import java.util.Arrays;

import org.optaplanner.core.impl.solution.Solution;
import org.optaplanner.examples.common.app.LoggingMain;
import org.optaplanner.examples.common.business.ProblemFileComparator;

public abstract class AbstractSolutionExporter extends LoggingMain {

    private static final String DEFAULT_INPUT_FILE_SUFFIX = ".xml";
    protected SolutionDao solutionDao;

    public AbstractSolutionExporter(SolutionDao solutionDao) {
        this.solutionDao = solutionDao;
    }

    protected File getInputDir() {
        return new File(solutionDao.getDataDir(), "solved");
    }

    protected File getOutputDir() {
        return new File(solutionDao.getDataDir(), "output");
    }

    protected String getInputFileSuffix() {
        return DEFAULT_INPUT_FILE_SUFFIX;
    }

    protected abstract String getOutputFileSuffix();

    public void convertAll() {
        File inputDir = getInputDir();
        if (!inputDir.exists()) {
            throw new IllegalStateException("The directory inputDir (" + inputDir.getAbsolutePath()
                    + ") does not exist." +
                    " The working directory should be set to the directory that contains the data directory." +
                    " This is different in a git clone (optaplanner/optaplanner-examples)" +
                    " and the release zip (examples).");
        }
        File outputDir = getOutputDir();
        outputDir.mkdirs();
        File[] inputFiles = inputDir.listFiles();
        Arrays.sort(inputFiles, new ProblemFileComparator());
        for (File inputFile : inputFiles) {
            String inputFileName = inputFile.getName();
            if (inputFileName.endsWith(getInputFileSuffix())) {
                Solution solution = solutionDao.readSolution(inputFile);
                String outputFileName = inputFileName.substring(0,
                        inputFileName.length() - getInputFileSuffix().length())
                        + getOutputFileSuffix();
                File outputFile = new File(outputDir, outputFileName);
                writeSolution(solution, outputFile);
            }
        }
    }

    public abstract void writeSolution(Solution solution, File outputFile);
}