Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java @ 455:363236fc462d

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Added Rasterdatasupport to VerticalCrossSections gnv-artifacts/trunk@505 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Mon, 04 Jan 2010 15:27:33 +0000
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children 47ad9721e692
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363236fc462d Added Rasterdatasupport to VerticalCrossSections
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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 }
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