/* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
 * Software engineering by
 *  Björnsen Beratende Ingenieure GmbH
 *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
 *
 * This file is Free Software under the GNU AGPL (>=v3)
 * and comes with ABSOLUTELY NO WARRANTY! Check out the
 * documentation coming with Dive4Elements River for details.
 */

package org.dive4elements.river.importer.sinfo.importitem;

import java.util.Date;
import java.util.List;

import org.dive4elements.river.importer.common.AbstractKmLineImport;
import org.dive4elements.river.model.sinfo.DailyDischarge;
import org.dive4elements.river.model.sinfo.DailyDischargeValue;
import org.hibernate.Query;
import org.hibernate.Session;

/**
 * Imported daily discharge of a gauge.
 *
 * @author Matthias Schäfer
 *
 */
public class DailyDischargeDayLineImport extends AbstractKmLineImport<DailyDischarge, DailyDischargeValue> {

    /***** FIELDS *****/

    private final Date day;

    private final Double discharge;


    /***** CONSTRUCTOR *****/

    public DailyDischargeDayLineImport(final Date day, final Double discharge) {
        super(Double.NaN);
        this.day = day;
        this.discharge = discharge;
    }

    /***** METHODS *****/

    @Override
    protected DailyDischargeValue queryValueItem(final Session session, final DailyDischarge parent) {
        final Query query = session.createQuery("FROM DailyDischargeValue WHERE (dailyDischarge=:parent) AND (day=:day)");
        query.setParameter("parent", parent);
        query.setParameter("day", this.day);
        final List rows = query.list();
        if (!rows.isEmpty())
            return (DailyDischargeValue) rows.get(0);
        else
            return null;
    }


    @Override
    protected DailyDischargeValue createValueItem(final DailyDischarge parent) {
        return new DailyDischargeValue(parent, this.day, this.discharge);
    }
}