Mercurial > dive4elements > gnv-client
diff 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 |
parents | |
children | 47ad9721e692 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java Mon Jan 04 15:27:33 2010 +0000 @@ -0,0 +1,67 @@ +/** + * + */ +package de.intevation.gnv.math; + +import java.util.Collection; + +import org.apache.log4j.Logger; + +import com.vividsolutions.jts.geom.Coordinate; + +import de.intevation.gnv.geobackend.base.Result; +import de.intevation.gnv.geobackend.base.query.QueryExecutor; +import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory; +import de.intevation.gnv.geobackend.base.query.exception.QueryException; + + +/** + * @author Tim Englich <tim.englich@intevation.de> + * + */ +public class QueriedXYDepth implements XYDepth { + + /** + * the logger, used to log exceptions and additonaly information + */ + private static Logger log = Logger.getLogger(QueriedXYDepth.class); + + private String queryID = "rasterQuery"; + + private QueryExecutor queryExecutor = null; + + /** + * Constructor + */ + public QueriedXYDepth() { + this.queryExecutor = QueryExecutorFactory.getInstance().getQueryExecutor(); + } + + /** + * @see de.intevation.gnv.math.XYDepth#depth(com.vividsolutions.jts.geom.Coordinate) + */ + public double depth(Coordinate coordinate) { + log.debug("QueriedXYDepth.depth for " + coordinate.x+" "+ coordinate.y); + double resultValue = 0; + Collection<Result> result = null; + try { + String[] filterValues = new String[]{"Point ("+coordinate.x+" "+coordinate.y+")"}; + result = this.queryExecutor.executeQuery(this.queryID,filterValues); + } catch (QueryException e) { + log.error(e,e); + } + + if (result != null){ + if (!result.isEmpty()){ + Result row = result.iterator().next(); + resultValue = row.getDouble(0); + }else{ + resultValue = Double.NaN; + } + }else{ + resultValue = Double.NaN; + } + return resultValue; + } + +}