org.optaplanner.examples.common.persistence.AbstractTxtSolutionExporter Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of optaplanner-examples Show documentation
Show all versions of optaplanner-examples Show documentation
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.
/*
* 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.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import org.apache.commons.io.IOUtils;
import org.optaplanner.core.impl.solution.Solution;
public abstract class AbstractTxtSolutionExporter extends AbstractSolutionExporter {
protected static final String DEFAULT_OUTPUT_FILE_SUFFIX = ".txt";
protected AbstractTxtSolutionExporter(SolutionDao solutionDao) {
super(solutionDao);
}
protected String getOutputFileSuffix() {
return DEFAULT_OUTPUT_FILE_SUFFIX;
}
public abstract TxtOutputBuilder createTxtOutputBuilder();
public void writeSolution(Solution solution, File outputFile) {
BufferedWriter bufferedWriter = null;
try {
bufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile), "UTF-8"));
TxtOutputBuilder txtOutputBuilder = createTxtOutputBuilder();
txtOutputBuilder.setBufferedWriter(bufferedWriter);
txtOutputBuilder.setSolution(solution);
txtOutputBuilder.writeSolution();
} catch (IOException e) {
throw new IllegalArgumentException("Could not write the file (" + outputFile.getName() + ").", e);
} finally {
IOUtils.closeQuietly(bufferedWriter);
}
logger.info("Exported: {}", outputFile);
}
public abstract class TxtOutputBuilder {
protected BufferedWriter bufferedWriter;
public void setBufferedWriter(BufferedWriter bufferedWriter) {
this.bufferedWriter = bufferedWriter;
}
public abstract void setSolution(Solution solution);
public abstract void writeSolution() throws IOException;
// ************************************************************************
// Helper methods
// ************************************************************************
}
}