gernotbelger@8883: /** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
gernotbelger@8883:  * Software engineering by
gernotbelger@8883:  *  Björnsen Beratende Ingenieure GmbH
gernotbelger@8883:  *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
gernotbelger@8883:  *
gernotbelger@8883:  * This file is Free Software under the GNU AGPL (>=v3)
gernotbelger@8883:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
gernotbelger@8883:  * documentation coming with Dive4Elements River for details.
gernotbelger@8883:  */
gernotbelger@8883: package org.dive4elements.river.artifacts.model.fixings;
gernotbelger@8883: 
gernotbelger@8957: import java.util.Calendar;
gernotbelger@8883: import java.util.Date;
gernotbelger@8883: import java.util.List;
gernotbelger@8957: import java.util.SortedSet;
gernotbelger@8957: import java.util.TreeSet;
gernotbelger@8883: 
gernotbelger@8883: import org.dive4elements.river.artifacts.access.FixRealizingAccess;
gernotbelger@8883: import org.dive4elements.river.artifacts.model.FixingsOverview;
gernotbelger@8883: import org.dive4elements.river.artifacts.model.FixingsOverviewFactory;
gernotbelger@8883: 
gernotbelger@8883: /**
gernotbelger@8883:  * REMARK: this inheritance is only needed, beause changing the orignal calculation will probably break the
gernotbelger@8883:  * serialization of the artifact....
gernotbelger@8883:  *
gernotbelger@8883:  * @author Gernot Belger
gernotbelger@8883:  */
gernotbelger@8883: public class FixRealizingCalculationExtended extends FixRealizingCalculation {
gernotbelger@8883:     private static final long serialVersionUID = 1L;
gernotbelger@8883: 
gernotbelger@8883:     public FixRealizingCalculationExtended(final FixRealizingAccess fixAccess) {
gernotbelger@8883:         super(fixAccess);
gernotbelger@8883:     }
gernotbelger@8883: 
gernotbelger@8883:     public int determineMeanYear() {
gernotbelger@8883:         final FixingsOverview overview = FixingsOverviewFactory.getOverview(this.river);
gernotbelger@8883:         final ColumnCache cc = new ColumnCache();
gernotbelger@8883: 
gernotbelger@8957:         final SortedSet<Integer> years = new TreeSet<>();
gernotbelger@8957: 
gernotbelger@8957:         final Calendar cal = Calendar.getInstance();
gernotbelger@8904: 
gernotbelger@8883:         final List<Column> columns = getEventColumns(overview, cc);
gernotbelger@8883:         for (final Column column : columns) {
gernotbelger@8883:             final Date date = column.getDate();
gernotbelger@8957:             cal.setTime(date);
gernotbelger@8957: 
gernotbelger@8957:             final int year = cal.get(Calendar.YEAR);
gernotbelger@8957:             years.add(year);
gernotbelger@8883:         }
gernotbelger@8883: 
gernotbelger@8957:         final Integer first = years.first();
gernotbelger@8957:         final Integer last = years.last();
gernotbelger@8957:         if (first == null || last == null)
gernotbelger@8957:             return -1;
gernotbelger@8957: 
gernotbelger@8957:         return (first + last) / 2;
gernotbelger@8883:     }
gernotbelger@8883: }