/*
* Copyright 2011 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.benchmark.core;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.XStreamException;
import com.thoughtworks.xstream.converters.reflection.FieldDictionary;
import com.thoughtworks.xstream.converters.reflection.NativeFieldKeySorter;
import com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider;
import org.apache.commons.io.IOUtils;
import org.drools.planner.core.solution.ProblemIO;
import org.drools.planner.core.solution.Solution;
public class XStreamProblemIO implements ProblemIO {
private XStream xStream;
public XStreamProblemIO() {
// TODO From Xstream 1.3.3 that KeySorter will be the default. See http://jira.codehaus.org/browse/XSTR-363
xStream = new XStream(new PureJavaReflectionProvider(new FieldDictionary(new NativeFieldKeySorter())));
xStream.setMode(XStream.ID_REFERENCES);
}
public XStreamProblemIO(Class... xstreamAnnotatedClasses) {
this();
xStream.processAnnotations(xstreamAnnotatedClasses);
}
public String getFileExtension() {
return "xml";
}
public Solution read(File inputSolutionFile) {
Solution unsolvedSolution;
Reader reader = null;
try {
// xStream.fromXml(InputStream) does not use UTF-8
reader = new InputStreamReader(new FileInputStream(inputSolutionFile), "UTF-8");
unsolvedSolution = (Solution) xStream.fromXML(reader);
} catch (XStreamException e) {
throw new IllegalArgumentException("Problem reading inputSolutionFile: " + inputSolutionFile, e);
} catch (IOException e) {
throw new IllegalArgumentException("Problem reading inputSolutionFile: " + inputSolutionFile, e);
} finally {
IOUtils.closeQuietly(reader);
}
return unsolvedSolution;
}
public void write(Solution solution, File outputSolutionFile) {
Writer writer = null;
try {
writer = new OutputStreamWriter(new FileOutputStream(outputSolutionFile), "UTF-8");
xStream.toXML(solution, writer);
} catch (IOException e) {
throw new IllegalArgumentException("Problem writing outputSolutionFile: " + outputSolutionFile, e);
} finally {
IOUtils.closeQuietly(writer);
}
}
}