/*
* 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.features.construction;
import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.operator.features.AbstractFeatureProcessing;
import com.rapidminer.operator.ports.metadata.ExampleSetMetaData;
import com.rapidminer.operator.ports.metadata.MetaData;
import com.rapidminer.parameter.UndefinedParameterError;
/**
* Abstract superclass of all feature processing operators who generate new features.
*
* @author Simon Fischer
*/
public abstract class AbstractFeatureConstruction extends AbstractFeatureProcessing {
public AbstractFeatureConstruction(OperatorDescription description) {
super(description);
}
@Override
protected MetaData modifyMetaData(ExampleSetMetaData metaData) throws UndefinedParameterError {
metaData.attributesAreSuperset();
return metaData;
}
/**
* These operators will build additional columns, but won't touch existing ones.
*/
@Override
public boolean writesIntoExistingData() {
return false;
}
}