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Drools Planner optimizes automated planning by combining metaheuristic search algorithms with rule
engine powered score calculation. This is the drools-planner-examples module which contains examples on how to use
Drools Planner.
/*
* 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.drools.planner.examples.common.persistence;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
import org.drools.planner.core.solution.Solution;
import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;
public abstract class AbstractXmlSolutionExporter extends AbstractSolutionExporter {
protected static final String DEFAULT_OUTPUT_FILE_SUFFIX = ".xml";
protected AbstractXmlSolutionExporter(SolutionDao solutionDao) {
super(solutionDao);
}
protected String getOutputFileSuffix() {
return DEFAULT_OUTPUT_FILE_SUFFIX;
}
public abstract XmlOutputBuilder createXmlOutputBuilder();
public void writeSolution(Solution solution, File outputFile) {
OutputStream out = null;
try {
out = new FileOutputStream(outputFile);
Document document = new Document();
XmlOutputBuilder xmlOutputBuilder = createXmlOutputBuilder();
xmlOutputBuilder.setDocument(document);
xmlOutputBuilder.setSolution(solution);
xmlOutputBuilder.writeSolution();
XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());
outputter.output(document, out);
} catch (IOException e) {
throw new IllegalArgumentException("Could not write the file (" + outputFile.getName() + ").", e);
} catch (JDOMException e) {
throw new IllegalArgumentException("Could not format the XML file (" + outputFile.getName() + ").", e);
} finally {
IOUtils.closeQuietly(out);
}
}
public abstract class XmlOutputBuilder {
protected Document document;
public void setDocument(Document document) {
this.document = document;
}
public abstract void setSolution(Solution solution);
public abstract void writeSolution() throws IOException, JDOMException;
// ************************************************************************
// Helper methods
// ************************************************************************
}
}