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JPMML class model evaluator extensions

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/*
 * 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.DataField;
import org.dmg.pmml.Value;
import org.jpmml.model.ReflectionUtil;

@XmlRootElement (
	name = "DataField"
)
public class RichDataField extends DataField implements HasParsedValueMapping {

	@XmlTransient
	private Map parsedValueMappings = null;


	public RichDataField(){
	}

	public RichDataField(DataField dataField){
		ReflectionUtil.copyState(dataField, this);
	}

	@Override
	public Map getValueMapping(TypeInfo typeInfo){

		if(this.parsedValueMappings == null){
			this.parsedValueMappings = ImmutableMap.copyOf(parseValues(typeInfo));
		}

		return this.parsedValueMappings;
	}

	private Map parseValues(TypeInfo typeInfo){
		Map result = new LinkedHashMap<>();

		List pmmlValues = getValues();
		for(Value pmmlValue : pmmlValues){
			String stringValue = pmmlValue.getValue();
			if(stringValue == null){
				throw new MissingAttributeException(pmmlValue, PMMLAttributes.VALUE_VALUE);
			}

			Value.Property property = pmmlValue.getProperty();
			switch(property){
				case VALID:
					{
						FieldValue value = parse(typeInfo, stringValue);

						result.put(value, pmmlValue);
					}
					break;
				case INVALID:
				case MISSING:
					{
						FieldValue value;

						try {
							value = parse(typeInfo, stringValue);
						} catch(IllegalArgumentException | TypeCheckException e){
							continue;
						}

						result.put(value, pmmlValue);
					}
					break;
				default:
					throw new UnsupportedAttributeException(pmmlValue, property);
			}
		}

		return result;
	}
}