Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java @ 455:363236fc462d
Added Rasterdatasupport to VerticalCrossSections
gnv-artifacts/trunk@505 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 04 Jan 2010 15:27:33 +0000 |
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children | 47ad9721e692 |
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1 /** |
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2 * |
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3 */ |
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4 package de.intevation.gnv.math; |
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5 |
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6 import java.util.Collection; |
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7 |
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8 import org.apache.log4j.Logger; |
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9 |
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10 import com.vividsolutions.jts.geom.Coordinate; |
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11 |
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12 import de.intevation.gnv.geobackend.base.Result; |
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13 import de.intevation.gnv.geobackend.base.query.QueryExecutor; |
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14 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory; |
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15 import de.intevation.gnv.geobackend.base.query.exception.QueryException; |
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16 |
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17 |
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18 /** |
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19 * @author Tim Englich <tim.englich@intevation.de> |
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20 * |
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21 */ |
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22 public class QueriedXYDepth implements XYDepth { |
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23 |
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24 /** |
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25 * the logger, used to log exceptions and additonaly information |
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26 */ |
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27 private static Logger log = Logger.getLogger(QueriedXYDepth.class); |
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28 |
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29 private String queryID = "rasterQuery"; |
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30 |
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31 private QueryExecutor queryExecutor = null; |
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32 |
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33 /** |
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34 * Constructor |
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35 */ |
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36 public QueriedXYDepth() { |
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37 this.queryExecutor = QueryExecutorFactory.getInstance().getQueryExecutor(); |
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38 } |
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39 |
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40 /** |
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41 * @see de.intevation.gnv.math.XYDepth#depth(com.vividsolutions.jts.geom.Coordinate) |
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42 */ |
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43 public double depth(Coordinate coordinate) { |
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44 log.debug("QueriedXYDepth.depth for " + coordinate.x+" "+ coordinate.y); |
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45 double resultValue = 0; |
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46 Collection<Result> result = null; |
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47 try { |
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48 String[] filterValues = new String[]{"Point ("+coordinate.x+" "+coordinate.y+")"}; |
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49 result = this.queryExecutor.executeQuery(this.queryID,filterValues); |
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50 } catch (QueryException e) { |
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51 log.error(e,e); |
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52 } |
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53 |
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54 if (result != null){ |
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55 if (!result.isEmpty()){ |
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56 Result row = result.iterator().next(); |
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57 resultValue = row.getDouble(0); |
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58 }else{ |
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59 resultValue = Double.NaN; |
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60 } |
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61 }else{ |
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62 resultValue = Double.NaN; |
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63 } |
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64 return resultValue; |
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65 } |
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66 |
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67 } |