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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.common.persistence;

import java.io.File;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class AbstractSolutionDao implements SolutionDao {

    /**
     * The path to the data directory, preferably with unix slashes for portability.
     * For example: -D{@value #DATA_DIR_SYSTEM_PROPERTY}=sources/data/
     */
    public static final String DATA_DIR_SYSTEM_PROPERTY = "org.optaplanner.examples.dataDir";

    protected final transient Logger logger = LoggerFactory.getLogger(getClass());

    protected String dirName;
    protected File dataDir;

    public AbstractSolutionDao(String dirName) {
        this.dirName = dirName;
        String dataDirPath = System.getProperty(DATA_DIR_SYSTEM_PROPERTY, "data/");
        dataDir = new File(dataDirPath, dirName);
        if (!dataDir.exists()) {
            throw new IllegalStateException("The directory dataDir (" + dataDir.getAbsolutePath()
                    + ") does not exist.\n" +
                    " Either the working directory should be set to the directory that contains the data directory" +
                    " (which is not the data directory itself), or the system property "
                    + DATA_DIR_SYSTEM_PROPERTY + " should be set properly.\n" +
                    " The data directory is different in a git clone (optaplanner/optaplanner-examples/data)" +
                    " and in a release zip (examples/sources/data).\n" +
                    " In an IDE (IntelliJ, Eclipse, NetBeans), open the \"Run configuration\""
                    + " to change \"Working directory\" (or add the system property in \"VM options\").");
        }
    }

    public String getDirName() {
        return dirName;
    }

    public File getDataDir() {
        return dataDir;
    }

}