/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.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.tools.metadata;
import com.rapidminer.example.Attributes;
import com.rapidminer.operator.ports.metadata.AttributeMetaData;
import com.rapidminer.operator.ports.metadata.ExampleSetMetaData;
import com.rapidminer.operator.ports.metadata.SetRelation;
import com.rapidminer.tools.Ontology;
import com.rapidminer.tools.math.container.Range;
/**
* Tools class for handling meta data. Should contain analogs to the Tools class for handling
* exampleSet.
*
* @author Sebastian Land
*/
public class MetaDataTools {
/**
* This method is the analogon to the checkAndCreateIds of the Tools class for meta data. It
* creates an integer id attribute with as much informations as available.
*/
public static void checkAndCreateIds(ExampleSetMetaData emd) {
if (emd.getSpecial(Attributes.ID_NAME) == null) {
AttributeMetaData idMD = new AttributeMetaData(Attributes.ID_NAME, Ontology.INTEGER, Attributes.ID_NAME);
if (emd.getNumberOfExamples().isKnown()) {
if (emd.getNumberOfExamples().getValue().doubleValue() > 1) {
idMD.setValueRange(new Range(0, emd.getNumberOfExamples().getValue().doubleValue() - 1),
SetRelation.EQUAL);
} else {
idMD.setValueRange(new Range(), SetRelation.EQUAL);
}
}
emd.addAttribute(idMD);
}
}
}