/**
 * This file is part of CERMINE project.
 * Copyright (c) 2011-2018 ICM-UW
 *
 * CERMINE 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.
 *
 * CERMINE 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 CERMINE. If not, see <http://www.gnu.org/licenses/>.
 */

package pl.edu.icm.cermine.tools.classification.sampleselection;

import java.util.ArrayList;
import java.util.List;
import pl.edu.icm.cermine.structure.model.BxZoneLabel;
import pl.edu.icm.cermine.structure.model.BxZoneLabelCategory;
import pl.edu.icm.cermine.tools.classification.general.TrainingSample;

/**
 * @author Pawel Szostek
 */
public class SampleFilter implements SampleSelector<BxZoneLabel> {

    private final BxZoneLabelCategory category;

    public SampleFilter(BxZoneLabelCategory category) {
        this.category = category;
    }

    @Override
    public List<TrainingSample<BxZoneLabel>> pickElements(List<TrainingSample<BxZoneLabel>> inputElements) {
        List<TrainingSample<BxZoneLabel>> ret = new ArrayList<TrainingSample<BxZoneLabel>>();
        for (TrainingSample<BxZoneLabel> elem : inputElements) {
            if (elem.getLabel().getCategory() == category) {
                ret.add(elem);
            }
        }
        return ret;
    }
}
