--- a/gnv-artifacts/ChangeLog	Mon Jan 04 15:41:29 2010 +0000
+++ b/gnv-artifacts/ChangeLog	Tue Jan 05 14:12:03 2010 +0000
@@ -1,3 +1,9 @@
+2010-01-05  Tim Englich  <tim.englich@intevation.de>
+
+	* src/main/java/de/intevation/gnv/math/QueriedXYDepth.java (depth): 
+	  Added the usage of the new RasterObject integrated in the geo-backend.
+	  Now the Performance is much better accessing the depth to an coordinate.
+
 2010-01-04  Ingo Weinzierl <ingo.weinzierl@intevation.de>
 
 	* src/main/java/de/intevation/gnv/utils/ArtifactXMLUtilities.java: Declared

--- a/gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java	Mon Jan 04 15:41:29 2010 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/math/QueriedXYDepth.java	Tue Jan 05 14:12:03 2010 +0000
@@ -3,7 +3,9 @@
  */
 package de.intevation.gnv.math;
 
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 
 import org.apache.log4j.Logger;
 
@@ -13,6 +15,7 @@
 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;
+import de.intevation.gnv.geobackend.sde.datasources.RasterObject;
 
 
 /**
@@ -30,6 +33,8 @@
     
     private QueryExecutor queryExecutor = null;
     
+    private ArrayList<RasterObject> rasterData = new ArrayList<RasterObject>();
+    
     /**
      * Constructor
      */
@@ -42,26 +47,44 @@
      */
     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);
-        }
+        double resultValue = Double.NaN;
         
-        if (result != null){
-            if (!result.isEmpty()){
-                Result row = result.iterator().next();
-                resultValue = row.getDouble(0);
-            }else{
-                resultValue = Double.NaN;
+        RasterObject ro = this.getRasterObject(coordinate);
+        
+        if (ro == null){
+            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);
             }
-        }else{
-            resultValue = Double.NaN;
+            
+            if (result != null){
+                if (!result.isEmpty()){
+                    Result row = result.iterator().next();
+                    ro = (RasterObject)row.getObject(0);
+                    synchronized (rasterData) {
+                        rasterData.add(ro);
+                    }
+                }
+            }
+        }
+        if (ro != null){
+            resultValue = ro.getValue(coordinate); 
         }
         return resultValue;
     }
+    
+    private RasterObject getRasterObject(Coordinate coordinate){
+        for (int i = 0; i < rasterData.size(); i++){
+            RasterObject ro = rasterData.get(i);
+            if (ro.getEnvelope().contains(coordinate)){
+                return ro;
+            }
+        }
+        return null;
+       
+    }
 
 }