Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/statistics/HorizontalProfileStatistics.java @ 1062:58b4a07db856

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Cach improvement: remove the cached elements of each visited state that is visited while stepping back to a previous state. gnv-artifacts/trunk@1147 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 02 Jun 2010 09:52:39 +0000
parents 2423cefe7d39
children f953c9a559d8
rev   line source
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1 package de.intevation.gnv.statistics;
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2
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3 import java.sql.SQLException;
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4 import java.util.Collection;
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5
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6 import org.apache.log4j.Logger;
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8 import com.vividsolutions.jts.geom.Point;
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9 import com.vividsolutions.jts.io.ParseException;
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10 import com.vividsolutions.jts.io.WKTReader;
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12 import de.intevation.gnv.geobackend.base.Result;
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13 import de.intevation.gnv.state.describedata.KeyValueDescibeData;
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14 import de.intevation.gnv.utils.DistanceCalculator;
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15
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16 /**
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17 * This class is used to create a statistic for 'Horizontalprofil' products.
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18 *
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19 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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20 *
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21 */
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22 public class HorizontalProfileStatistics extends TimeseriesStatistics {
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23
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24 private static Logger log = Logger.getLogger(HorizontalProfileStatistics.class);
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25
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26 private WKTReader wktReader = new WKTReader();
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28 private DistanceCalculator dc = new DistanceCalculator();
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30 private double distance = 0;
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32 /**
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33 * Constructor
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34 */
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35 public HorizontalProfileStatistics() {
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36 super();
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37 }
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38
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39
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40 @Override
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41 protected double calculateXOrdinateValue(Result previousRow,Result row)
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42 throws SQLException {
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43 try {
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44 Point start = (Point)this.wktReader.read(previousRow.getString("SHAPE"));
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45 Point current = (Point)this.wktReader.read(row.getString("SHAPE"));
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46 double delta = DistanceCalculator.calculateDistance(start, current);
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47
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48 if (!Double.isNaN(delta)){
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49 this.distance = this.distance + delta;
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50 }
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51 } catch (ParseException e) {
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52 log.error(e,e);
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53 }
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54 return this.distance;
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55 }
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58 @Override
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59 protected String generateStatisticsName(
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60 String break1,
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61 String break2,
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62 String break3,
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63 Collection<KeyValueDescibeData> parameters,
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64 Collection<KeyValueDescibeData> measurements,
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65 Collection<KeyValueDescibeData> dates) {
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66 return (this.findValueTitle(parameters, break1)+ " "+
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67 this.findValueTitle(measurements,break2)).trim()+" "+
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68 this.findValueTitle(dates,break3);
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69 }
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72 @Override
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73 protected void clearStatistics() {
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74 log.debug("HorizontalProfileStatistics.clearStatistics");
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75 super.clearStatistics();
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76 this.distance = 0;
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77 }
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79 }
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