Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java @ 457:47ad9721e692
Added RasterObject for caching the Rastertiles to get a better performance.
gnv-artifacts/trunk@509 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
---|---|
date | Tue, 05 Jan 2010 14:12:03 +0000 |
parents | 363236fc462d |
children | 92d6cf448598 |
comparison
equal
deleted
inserted
replaced
456:b8080695ea62 | 457:47ad9721e692 |
---|---|
1 /** | 1 /** |
2 * | 2 * |
3 */ | 3 */ |
4 package de.intevation.gnv.math; | 4 package de.intevation.gnv.math; |
5 | 5 |
6 import java.util.ArrayList; | |
6 import java.util.Collection; | 7 import java.util.Collection; |
8 import java.util.HashMap; | |
7 | 9 |
8 import org.apache.log4j.Logger; | 10 import org.apache.log4j.Logger; |
9 | 11 |
10 import com.vividsolutions.jts.geom.Coordinate; | 12 import com.vividsolutions.jts.geom.Coordinate; |
11 | 13 |
12 import de.intevation.gnv.geobackend.base.Result; | 14 import de.intevation.gnv.geobackend.base.Result; |
13 import de.intevation.gnv.geobackend.base.query.QueryExecutor; | 15 import de.intevation.gnv.geobackend.base.query.QueryExecutor; |
14 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory; | 16 import de.intevation.gnv.geobackend.base.query.QueryExecutorFactory; |
15 import de.intevation.gnv.geobackend.base.query.exception.QueryException; | 17 import de.intevation.gnv.geobackend.base.query.exception.QueryException; |
18 import de.intevation.gnv.geobackend.sde.datasources.RasterObject; | |
16 | 19 |
17 | 20 |
18 /** | 21 /** |
19 * @author Tim Englich <tim.englich@intevation.de> | 22 * @author Tim Englich <tim.englich@intevation.de> |
20 * | 23 * |
28 | 31 |
29 private String queryID = "rasterQuery"; | 32 private String queryID = "rasterQuery"; |
30 | 33 |
31 private QueryExecutor queryExecutor = null; | 34 private QueryExecutor queryExecutor = null; |
32 | 35 |
36 private ArrayList<RasterObject> rasterData = new ArrayList<RasterObject>(); | |
37 | |
33 /** | 38 /** |
34 * Constructor | 39 * Constructor |
35 */ | 40 */ |
36 public QueriedXYDepth() { | 41 public QueriedXYDepth() { |
37 this.queryExecutor = QueryExecutorFactory.getInstance().getQueryExecutor(); | 42 this.queryExecutor = QueryExecutorFactory.getInstance().getQueryExecutor(); |
40 /** | 45 /** |
41 * @see de.intevation.gnv.math.XYDepth#depth(com.vividsolutions.jts.geom.Coordinate) | 46 * @see de.intevation.gnv.math.XYDepth#depth(com.vividsolutions.jts.geom.Coordinate) |
42 */ | 47 */ |
43 public double depth(Coordinate coordinate) { | 48 public double depth(Coordinate coordinate) { |
44 log.debug("QueriedXYDepth.depth for " + coordinate.x+" "+ coordinate.y); | 49 log.debug("QueriedXYDepth.depth for " + coordinate.x+" "+ coordinate.y); |
45 double resultValue = 0; | 50 double resultValue = Double.NaN; |
46 Collection<Result> result = null; | 51 |
47 try { | 52 RasterObject ro = this.getRasterObject(coordinate); |
48 String[] filterValues = new String[]{"Point ("+coordinate.x+" "+coordinate.y+")"}; | 53 |
49 result = this.queryExecutor.executeQuery(this.queryID,filterValues); | 54 if (ro == null){ |
50 } catch (QueryException e) { | 55 Collection<Result> result = null; |
51 log.error(e,e); | 56 try { |
57 String[] filterValues = new String[]{"Point ("+coordinate.x+" "+coordinate.y+")"}; | |
58 result = this.queryExecutor.executeQuery(this.queryID,filterValues); | |
59 } catch (QueryException e) { | |
60 log.error(e,e); | |
61 } | |
62 | |
63 if (result != null){ | |
64 if (!result.isEmpty()){ | |
65 Result row = result.iterator().next(); | |
66 ro = (RasterObject)row.getObject(0); | |
67 synchronized (rasterData) { | |
68 rasterData.add(ro); | |
69 } | |
70 } | |
71 } | |
52 } | 72 } |
53 | 73 if (ro != null){ |
54 if (result != null){ | 74 resultValue = ro.getValue(coordinate); |
55 if (!result.isEmpty()){ | |
56 Result row = result.iterator().next(); | |
57 resultValue = row.getDouble(0); | |
58 }else{ | |
59 resultValue = Double.NaN; | |
60 } | |
61 }else{ | |
62 resultValue = Double.NaN; | |
63 } | 75 } |
64 return resultValue; | 76 return resultValue; |
65 } | 77 } |
78 | |
79 private RasterObject getRasterObject(Coordinate coordinate){ | |
80 for (int i = 0; i < rasterData.size(); i++){ | |
81 RasterObject ro = rasterData.get(i); | |
82 if (ro.getEnvelope().contains(coordinate)){ | |
83 return ro; | |
84 } | |
85 } | |
86 return null; | |
87 | |
88 } | |
66 | 89 |
67 } | 90 } |