/*
* RapidMiner
*
* Copyright (C) 2001-2008 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 java.util.zip.GZIPOutputStream;
import com.rapidminer.operator.IOObject;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.operator.OperatorException;
import com.rapidminer.operator.UserError;
import com.rapidminer.operator.learner.clustering.ClusterModel;
import com.rapidminer.parameter.ParameterType;
import com.rapidminer.parameter.ParameterTypeFile;
/**
* Write a single cluster model to a file.
*
* @author Ingo Mierswa
* @version $Id: ClusterModelWriter.java,v 1.9 2008/09/12 10:32:23 tobiasmalbrecht Exp $
*
*/
public class ClusterModelWriter extends Operator {
/** The parameter name for "the file to which the cluster model is stored" */
public static final String PARAMETER_CLUSTER_MODEL_FILE = "cluster_model_file";
public ClusterModelWriter(OperatorDescription description) {
super(description);
}
public IOObject[] apply() throws OperatorException {
ClusterModel cm = getInput(ClusterModel.class);
File file = getParameterAsFile(PARAMETER_CLUSTER_MODEL_FILE);
OutputStream out = null;
try {
out = new GZIPOutputStream(new FileOutputStream(file));
cm.write(out);
} catch (IOException e) {
throw new UserError(this, e, 303, new Object[] { file, e.getMessage() });
} finally {
if (out != null) {
try {
out.close();
} catch (IOException e) {
logError("Cannot close stream to file " + file);
}
}
}
return new IOObject[] { cm };
}
public Class<?>[] getInputClasses() {
return new Class[] { ClusterModel.class };
}
public Class<?>[] getOutputClasses() {
return new Class[] { ClusterModel.class };
}
public List<ParameterType> getParameterTypes() {
List<ParameterType> types = super.getParameterTypes();
ParameterType type = new ParameterTypeFile(PARAMETER_CLUSTER_MODEL_FILE, "the file to which the cluster model is stored", "clm", false);
type.setExpert(false);
types.add(type);
return types;
}
}