Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java @ 458:92d6cf448598

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improved raster tile based height evaluation. gnv-artifacts/trunk@512 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 06 Jan 2010 10:09:51 +0000
parents 47ad9721e692
children 912797826099
rev   line source
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
1 /**
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
2 *
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
3 */
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
4 package de.intevation.gnv.math;
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
5
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
6 import java.util.ArrayList;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
7 import java.util.Collection;
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
8 import java.util.HashMap;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
9
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
10 import java.lang.ref.SoftReference;
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
11
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
12 import org.apache.log4j.Logger;
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
13
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
14 import com.vividsolutions.jts.geom.Coordinate;
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
15
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
16 import de.intevation.gnv.geobackend.base.Result;
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
17 import de.intevation.gnv.geobackend.base.query.QueryExecutor;
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
18 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory;
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
19 import de.intevation.gnv.geobackend.base.query.exception.QueryException;
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
20 import de.intevation.gnv.geobackend.sde.datasources.RasterObject;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
21
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
22 import de.intevation.gnv.utils.WKTUtils;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
23
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
24 /**
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
25 * @author Tim Englich (tim.englich@intevation.de)
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
26 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
27 */
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
28 public class QueriedXYDepth implements XYDepth {
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
29
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
30 /**
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
31 * the logger, used to log exceptions and additonaly information
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
32 */
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
33 private static Logger log = Logger.getLogger(QueriedXYDepth.class);
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
34
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
35 private static final String queryID = "rasterQuery";
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
36
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
37 private QueryExecutor queryExecutor;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
38
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
39 private ArrayList<SoftReference<RasterObject>> rasterData;
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
40
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
41 /**
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
42 * Constructor
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
43 */
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
44 public QueriedXYDepth() {
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
45 rasterData = new ArrayList<SoftReference<RasterObject>>();
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
46 queryExecutor = QueryExecutorFactory.getInstance().getQueryExecutor();
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
47 }
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
48
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
49 /**
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
50 * @see de.intevation.gnv.math.XYDepth#depth(com.vividsolutions.jts.geom.Coordinate)
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
51 */
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
52 public double depth(Coordinate coordinate) {
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
53 double resultValue = Double.NaN;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
54
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
55 RasterObject ro = getRasterObject(coordinate);
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
56
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
57 if (ro == null) {
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
58 try {
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
59 String[] filterValues = new String[] { WKTUtils.toWKT(coordinate) };
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
60 Collection<Result> result = queryExecutor.executeQuery(this.queryID,filterValues);
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
61 for (Result row: result) {
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
62 if ((ro = (RasterObject)row.getObject(0)) != null) {
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
63 rasterData.add(new SoftReference<RasterObject>(ro));
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
64 }
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
65 break;
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
66 }
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
67 } catch (QueryException e) {
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
68 log.error(e, e);
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
69 }
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
70 }
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
71 return ro != null
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
72 ? ro.getValue(coordinate)
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
73 : Double.NaN;
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
74 }
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
75
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
76 private RasterObject getRasterObject(Coordinate coordinate){
458
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
77 for (int i = rasterData.size()-1; i >= 0; --i) {
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
78 SoftReference<RasterObject> ref = rasterData.get(i);
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
79 RasterObject ro = ref.get();
92d6cf448598 Improved raster tile based height evaluation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 457
diff changeset
80 if (ro != null && ro.getEnvelope().contains(coordinate)) {
457
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
81 return ro;
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
82 }
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
83 }
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
84 return null;
47ad9721e692 Added RasterObject for caching the Rastertiles to get a better performance.
Tim Englich <tim.englich@intevation.de>
parents: 455
diff changeset
85 }
455
363236fc462d Added Rasterdatasupport to VerticalCrossSections
Tim Englich <tim.englich@intevation.de>
parents:
diff changeset
86 }
http://dive4elements.wald.intevation.org