/*
* 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.preprocessing.filter;
import com.rapidminer.example.Attribute;
import com.rapidminer.example.ExampleSet;
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.tools.Ontology;
/**
* Transforms all regular attributes of a given example set into a value series.
* All attributes must have the same value type. Attributes with block type
* value series can be used by special feature extraction operators or by the
* operators from the value series plugin.
*
* @author Ingo Mierswa
* @version $Id: SingleAttributes2ValueSeries.java,v 1.9 2006/04/05 08:57:27
* ingomierswa Exp $
*/
public class SingleAttributes2ValueSeries extends Operator {
public SingleAttributes2ValueSeries(OperatorDescription description) {
super(description);
}
public IOObject[] apply() throws OperatorException {
ExampleSet exampleSet = getInput(ExampleSet.class);
// change attribute type
int valueType = Ontology.ATTRIBUTE_VALUE;
int a = 0;
for (Attribute attribute : exampleSet.getAttributes()) {
if (a == 0) {
valueType = attribute.getValueType();
}
if (!Ontology.ATTRIBUTE_BLOCK_TYPE.isA(attribute.getBlockType(), Ontology.SINGLE_VALUE)) {
throw new UserError(this, 121, new Object[] { attribute, Ontology.BLOCK_TYPE_NAMES[attribute.getBlockType()], Ontology.BLOCK_TYPE_NAMES[Ontology.SINGLE_VALUE] });
}
if (!Ontology.ATTRIBUTE_VALUE_TYPE.isA(attribute.getValueType(), valueType)) {
throw new UserError(this, 120, new Object[] { attribute, Ontology.VALUE_TYPE_NAMES[attribute.getValueType()], Ontology.VALUE_TYPE_NAMES[valueType] });
}
if (a == 0) {
attribute.setBlockType(Ontology.VALUE_SERIES_START);
} else if (a == (exampleSet.getAttributes().size() - 1)) {
attribute.setBlockType(Ontology.VALUE_SERIES_END);
} else {
attribute.setBlockType(Ontology.VALUE_SERIES);
}
checkForStop();
a++;
}
return new IOObject[] { exampleSet };
}
public Class<?>[] getOutputClasses() {
return new Class[] { ExampleSet.class };
}
public Class<?>[] getInputClasses() {
return new Class[] { ExampleSet.class };
}
}