ingo@1115: /*
ingo@1115:  * Copyright (c) 2010 by Intevation GmbH
ingo@1115:  *
ingo@1115:  * This program is free software under the LGPL (>=v2.1)
ingo@1115:  * Read the file LGPL.txt coming with the software for details
ingo@1115:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@1115:  */
ingo@1115: 
ingo@1078: package de.intevation.gnv.statistics;
ingo@1078: 
ingo@1078: import com.vividsolutions.jts.geom.Point;
ingo@1078: import com.vividsolutions.jts.io.ParseException;
ingo@1078: import com.vividsolutions.jts.io.WKTReader;
ingo@1078: 
ingo@1078: import de.intevation.gnv.geobackend.base.Result;
ingo@1078: import de.intevation.gnv.geobackend.base.ResultDescriptor;
ingo@1078: 
ingo@1078: import de.intevation.gnv.utils.DistanceCalculator;
ingo@1078: 
ingo@1078: import java.sql.SQLException;
ingo@1078: 
ingo@1078: import org.apache.log4j.Logger;
ingo@1078: 
ingo@1078: /**
ingo@1078:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@1078:  */
ingo@1078: public class HorizontalProfileVectorStatistics
ingo@1078: extends      VectorStatistics
ingo@1078: {
ingo@1078: 
ingo@1078:     private static Logger logger =
ingo@1078:         Logger.getLogger(HorizontalProfileVectorStatistics.class);
ingo@1078: 
ingo@1078:     private WKTReader wktReader = new WKTReader();
ingo@1078: 
ingo@1078:     private double distance;
ingo@1078: 
ingo@1078: 
ingo@1078:     public HorizontalProfileVectorStatistics() {
ingo@1078:         distance = 0;
ingo@1078:     }
ingo@1078: 
ingo@1078: 
ingo@1078:     protected void clear() {
ingo@1078:         distance = 0;
ingo@1078:     }
ingo@1078: 
ingo@1078: 
ingo@1078:     protected int getValueIdx(ResultDescriptor rd) {
ingo@1078:         return rd.getColumnIndex("YORDINATE");
ingo@1078:     }
ingo@1078: 
ingo@1078: 
ingo@1078:     protected double calculateXOrdinateValue(Result prev, Result row)
ingo@1078:     throws SQLException
ingo@1078:     {
ingo@1078:         try {
ingo@1078:             Point start   = (Point) wktReader.read(prev.getString("SHAPE"));
ingo@1078:             Point current = (Point) wktReader.read(row.getString("SHAPE"));
ingo@1078: 
ingo@1078:             double delta = DistanceCalculator.calculateDistance(start, current);
ingo@1078: 
ingo@1078:             distance = !Double.isNaN(delta) ? distance + delta : distance;
ingo@1078:         }
ingo@1078:         catch (ParseException e) {
ingo@1078:             logger.error(e,e);
ingo@1078:         }
ingo@1078:         return distance;
ingo@1078:     }
ingo@1078: }
ingo@1078: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :