org.jpmml.sklearn.LoggerUtil.java Source code

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Here is the source code for org.jpmml.sklearn.LoggerUtil.java

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/*
 * Copyright (c) 2015 Villu Ruusmann
 *
 * This file is part of JPMML-SkLearn
 *
 * JPMML-SkLearn 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-SkLearn 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-SkLearn.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.jpmml.sklearn;

import java.util.ArrayList;
import java.util.List;

import com.google.common.base.Function;
import com.google.common.collect.Lists;
import org.jpmml.converter.BinaryFeature;
import org.jpmml.converter.Feature;

public class LoggerUtil {

    private LoggerUtil() {
    }

    static public String formatNameList(List<Feature> features) {
        Function<Feature, String> function = new Function<Feature, String>() {

            @Override
            public String apply(Feature feature) {

                if (feature instanceof BinaryFeature) {
                    BinaryFeature binaryFeature = (BinaryFeature) feature;

                    return (binaryFeature.getName()).getValue() + "=" + binaryFeature.getValue();
                }

                return (feature.getName()).getValue();
            }
        };

        List<String> ids = Lists.transform(features, function);

        if (ids.size() <= 10) {
            return ids.toString();
        }

        List<String> result = new ArrayList<>();
        result.addAll(ids.subList(0, 2));
        result.add("...");
        result.addAll(ids.subList(ids.size() - 2, ids.size()));

        return result.toString();
    }
}