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JPMML class model converters

There is a newer version: 1.5.12

/*
 * Copyright (c) 2021 Villu Ruusmann
 *
 * This file is part of JPMML-Converter
 *
 * JPMML-Converter 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.
 *
 * JPMML-Converter 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 JPMML-Converter.  If not, see .
 */
package org.jpmml.converter;

import org.dmg.pmml.DataType;
import org.dmg.pmml.Field;
import org.dmg.pmml.PMMLFunctions;

/**
 * @see BinaryFeature
 */
public class MissingValueFeature extends Feature implements HasDerivedName {

	public MissingValueFeature(PMMLEncoder encoder, Field field){
		this(encoder, field.requireName(), field.requireDataType());
	}

	public MissingValueFeature(PMMLEncoder encoder, Feature feature){
		this(encoder, feature.getName(), feature.getDataType());
	}

	public MissingValueFeature(PMMLEncoder encoder, String name, DataType dataType){
		super(encoder, name, dataType);
	}

	@Override
	public String getDerivedName(){
		return FieldNameUtil.create(PMMLFunctions.ISMISSING, getName());
	}

	@Override
	public ContinuousFeature toContinuousFeature(){
		return toContinuousFeature(getDerivedName(), DataType.DOUBLE, () -> ExpressionUtil.createApply(PMMLFunctions.ISMISSING, ref()));
	}
}