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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 org.optaplanner.core.impl.solution.Solution;
import org.optaplanner.persistence.xstream.XStreamProblemIO;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class XStreamSolutionDao implements SolutionDao {

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

    private XStreamProblemIO xStreamProblemIO;
    private String dirName;
    private File dataDir;

    public XStreamSolutionDao(String dirName, Class... xstreamAnnotations) {
        this.dirName = dirName;
        dataDir = new File("data/" + dirName);
        xStreamProblemIO = new XStreamProblemIO(xstreamAnnotations);
    }

    public String getDirName() {
        return dirName;
    }

    public File getDataDir() {
        return dataDir;
    }

    public String getFileSuffix() {
        return ".xml";
    }

    public Solution readSolution(File inputSolutionFile) {
        Solution solution = xStreamProblemIO.read(inputSolutionFile);
        logger.info("Loaded: {}", inputSolutionFile);
        return solution;
    }

    public void writeSolution(Solution solution, File outputSolutionFile) {
        xStreamProblemIO.write(solution, outputSolutionFile);
        logger.info("Saved: {}", outputSolutionFile);
    }

}