org.jpmml.evaluator.RichBayesInput Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of pmml-extension Show documentation

JPMML class model evaluator extensions

There is a newer version: 1.2.15

/*
 * Copyright (c) 2015 Villu Ruusmann
 *
 * This file is part of JPMML-Evaluator
 *
 * JPMML-Evaluator 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-Evaluator 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-Evaluator.  If not, see .
 */
package org.jpmml.evaluator;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;

import com.google.common.collect.ImmutableMap;
import org.dmg.pmml.BayesInput;
import org.dmg.pmml.DataType;
import org.dmg.pmml.OpType;
import org.dmg.pmml.PairCounts;
import org.dmg.pmml.TargetValueCounts;
import org.jpmml.model.ReflectionUtil;

@XmlRootElement (
	name = "BayesInput"
)
public class RichBayesInput extends BayesInput implements HasParsedValueMapping {

	@XmlTransient
	private Map parsedValueMappings = null;


	public RichBayesInput(){
	}

	public RichBayesInput(BayesInput bayesInput){
		ReflectionUtil.copyState(bayesInput, this);
	}

	@Override
	public Map getValueMapping(DataType dataType, OpType opType){

		if(this.parsedValueMappings == null){
			this.parsedValueMappings = ImmutableMap.copyOf(parsePairCounts(dataType, opType));
		}

		return this.parsedValueMappings;
	}

	private Map parsePairCounts(DataType dataType, OpType opType){
		Map result = new LinkedHashMap<>();

		List pairCounts = getPairCounts();
		for(PairCounts pairCount : pairCounts){
			FieldValue value = FieldValueUtil.create(dataType, opType, pairCount.getValue());

			TargetValueCounts targetValueCounts = pairCount.getTargetValueCounts();
			if(targetValueCounts == null){
				throw new InvalidFeatureException(pairCount);
			}

			result.put(value, targetValueCounts);
		}

		return result;
	}
}