/*
* RapidMiner
*
* Copyright (C) 2001-2011 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.operator.io;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.operator.OperatorException;
import com.rapidminer.operator.UserError;
import com.rapidminer.operator.performance.PerformanceVector;
import com.rapidminer.parameter.ParameterType;
import com.rapidminer.parameter.ParameterTypeFile;
/**
* Writes the input performance vector in a given file. You also might want to
* use the {@link com.rapidminer.operator.io.ResultWriter} operator which
* writes all current results in the main result file.
*
* @author Ingo Mierswa
* Exp $
*/
public class PerformanceWriter extends AbstractWriter<PerformanceVector> {
/** The parameter name for "Filename for the performance file." */
public static final String PARAMETER_PERFORMANCE_FILE = "performance_file";
public PerformanceWriter(OperatorDescription description) {
super(description, PerformanceVector.class);
}
/** Writes the attribute set to a file. */
@Override
public PerformanceVector write(PerformanceVector performance) throws OperatorException {
File performanceFile = getParameterAsFile(PARAMETER_PERFORMANCE_FILE, true);
OutputStream out = null;
try {
out = new FileOutputStream(performanceFile);
performance.write(out);
} catch (IOException e) {
throw new UserError(this, e, 303, new Object[] { performanceFile, e.getMessage() });
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {
logError("Cannot close stream to file " + performanceFile);
}
}
}
return performance;
}
@Override
public List<ParameterType> getParameterTypes() {
List<ParameterType> types = super.getParameterTypes();
types.add(new ParameterTypeFile(PARAMETER_PERFORMANCE_FILE, "Filename for the performance file.", "per", false));
return types;
}
}