[Geotools-gt2-users] Problem in showing Layer on JmapPane

[kapil <kapilsharma047@gm...>]

Hi List,

I want to show a map on JmapPane, but i found exception when i run the code.
Here is my code:

ResultSet res = stmt.executeQuery(sql);
            SimpleFeatureCollection col =
org.geotools.feature.FeatureCollections.newCollection();
            while (res.next()) {
               
                col.add(PolygonFeatureHelper.createPolyFeature(new
WKTReader().read(res.getString("the_geom")), res.getString("kide")));
            }
            
            StyleBuilder sb = new StyleBuilder();
            MapStyleSetings mapSty = new MapStyleSetings();
            //..............................
             Irrelevent code
            //
            MapContent context = new MapContent();

            villageLayer = new FeatureLayer(col, archStyle, "Khasra");
            System.out.println("VILLAGELAYER"+villageLayer);
       

            context.addLayer(villageLayer);
    
           
            mapPane.setMapContent(context);


Jan 22, 2013 2:49:31 PM org.geotools.map.MapContent getMaxBounds
WARNING: Unable to determine bounds of org.geotools.map.FeatureLayer[Khasra,
VISIBLE]
java.lang.ClassCastException: java.lang.String cannot be cast to
com.vividsolutions.jts.geom.Geometry
	at
org.geotools.data.collection.CollectionDataStore.getBoundsInternal(CollectionDataStore.java:164)
	at
org.geotools.data.collection.CollectionDataStore.getBounds(CollectionDataStore.java:145)
	at
org.geotools.data.AbstractFeatureSource.getBounds(AbstractFeatureSource.java:318)
	at
org.geotools.data.AbstractFeatureSource.getBounds(AbstractFeatureSource.java:286)
	at org.geotools.map.FeatureLayer.getBounds(FeatureLayer.java:195)
	at org.geotools.map.MapContent.getMaxBounds(MapContent.java:600)
	at org.geotools.map.MapContent.getViewport(MapContent.java:665)
	at
org.geotools.swing.AbstractMapPane.doSetMapContent(AbstractMapPane.java:539)
	at
org.geotools.swing.AbstractMapPane.setMapContent(AbstractMapPane.java:517)
	at org.geotools.swing.JMapPane.setMapContent(JMapPane.java:86)
	at
in.nic.niccg.lrc.gis.lrcmapmutation.MapFactory.drawVillageMap(MapFactory.java:167)
	at
in.nic.niccg.lrc.gis.lrcmapmutation.VillageMap$ShowMapTask.doInBackground(VillageMap.java:292)
	at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)




--
View this message in context: http://osgeo-org.1560.n6.nabble.com/Problem-in-showing-Layer-on-JmapPane-tp5028912.html
Sent from the geotools-gt2-users mailing list archive at Nabble.com.

Re: [Geotools-gt2-users] Problem in showing Layer on JmapPane

[Michael Bedward <michael.bedward@gm...>]

Hello Kapil,

Looking at the error trace, the problem is with your feature data
("java.lang.String cannot be cast to
com.vividsolutions.jts.geom.Geometry").

Your FeatureHelper class must need a little help :)

Michael



On 22 January 2013 20:28, kapil <kapilsharma047@...> wrote:
> Hi List,
>
> I want to show a map on JmapPane, but i found exception when i run the code.
> Here is my code:
>
> ResultSet res = stmt.executeQuery(sql);
>             SimpleFeatureCollection col =
> org.geotools.feature.FeatureCollections.newCollection();
>             while (res.next()) {
>
>                 col.add(PolygonFeatureHelper.createPolyFeature(new
> WKTReader().read(res.getString("the_geom")), res.getString("kide")));
>             }
>
>             StyleBuilder sb = new StyleBuilder();
>             MapStyleSetings mapSty = new MapStyleSetings();
>             //..............................
>              Irrelevent code
>             //
>             MapContent context = new MapContent();
>
>             villageLayer = new FeatureLayer(col, archStyle, "Khasra");
>             System.out.println("VILLAGELAYER"+villageLayer);
>
>
>             context.addLayer(villageLayer);
>
>
>             mapPane.setMapContent(context);
>
>
> Jan 22, 2013 2:49:31 PM org.geotools.map.MapContent getMaxBounds
> WARNING: Unable to determine bounds of org.geotools.map.FeatureLayer[Khasra,
> VISIBLE]
> java.lang.ClassCastException: java.lang.String cannot be cast to
> com.vividsolutions.jts.geom.Geometry
>         at
> org.geotools.data.collection.CollectionDataStore.getBoundsInternal(CollectionDataStore.java:164)
>         at
> org.geotools.data.collection.CollectionDataStore.getBounds(CollectionDataStore.java:145)
>         at
> org.geotools.data.AbstractFeatureSource.getBounds(AbstractFeatureSource.java:318)
>         at
> org.geotools.data.AbstractFeatureSource.getBounds(AbstractFeatureSource.java:286)
>         at org.geotools.map.FeatureLayer.getBounds(FeatureLayer.java:195)
>         at org.geotools.map.MapContent.getMaxBounds(MapContent.java:600)
>         at org.geotools.map.MapContent.getViewport(MapContent.java:665)
>         at
> org.geotools.swing.AbstractMapPane.doSetMapContent(AbstractMapPane.java:539)
>         at
> org.geotools.swing.AbstractMapPane.setMapContent(AbstractMapPane.java:517)
>         at org.geotools.swing.JMapPane.setMapContent(JMapPane.java:86)
>         at
> in.nic.niccg.lrc.gis.lrcmapmutation.MapFactory.drawVillageMap(MapFactory.java:167)
>         at
> in.nic.niccg.lrc.gis.lrcmapmutation.VillageMap$ShowMapTask.doInBackground(VillageMap.java:292)
>         at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)
>         at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>         at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
>
>
>
>
> --
> View this message in context: http://osgeo-org.1560.n6.nabble.com/Problem-in-showing-Layer-on-JmapPane-tp5028912.html
> Sent from the geotools-gt2-users mailing list archive at Nabble.com.
>
> ------------------------------------------------------------------------------
> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
> MVPs and experts. ON SALE this month only -- learn more at:
> http://p.sf.net/sfu/learnnow-d2d
> _______________________________________________
> GeoTools-GT2-Users mailing list
> GeoTools-GT2-Users@...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users

Re: [Geotools-gt2-users] Problem in showing Layer on JmapPane

[kapil <kapilsharma047@gm...>]

Hi Michael,
   Thanks for helping me but i am still unable to solved out my problem in
PolygonfeatureHelper class, I make a createPolygonFeature() which return
SimpleFeature and this method call createFeatureType() 
Here is the code


public static SimpleFeature createPolyFeature(Geometry geom, String name ) {
    GeometryFactory gf = new GeometryFactory();
    
    if(geom instanceof Polygon ){
        geom = new MultiPolygon(new Polygon[] {(Polygon)geom  },new
GeometryFactory());
    }
    Object[] featureAttributes = { geom, name };
    SimpleFeatureBuilder sfb = new
SimpleFeatureBuilder(createFeatureType());
   sfb.add(featureAttributes);
    
    SimpleFeature f = sfb.buildFeature(null);
    return f;
  }
public static SimpleFeatureType createFeatureType() {
      
      AttributeDescriptor[] typesNew = new AttributeDescriptor[2];
      AttributeTypeBuilder build = new AttributeTypeBuilder();
      build.setBinding(String.class);
      build.setNillable(true);
      build.setLength(48);
      build.defaultValue(null);
      build.setName("NAME");
      AttributeDescriptor descriptor = build.buildDescriptor( "NAME" );
      
      AttributeTypeBuilder build1 = new AttributeTypeBuilder();
      build1.setBinding(MultiPolygon.class);
      build1.setName("the_geom");
      GeometryType geometryType = build1.buildGeometryType();
      GeometryDescriptor geomdescriptor =  build1.buildDescriptor(
"the_geom",   geometryType );
      
      typesNew[0] = descriptor;
      typesNew[1] = geomdescriptor;
      SimpleFeatureTypeBuilder sf = new SimpleFeatureTypeBuilder();
      sf.addAll(typesNew);
      sf.setName("Poly");
      
      SimpleFeatureType ft = sf.buildFeatureType();
       return ft;
}




--
View this message in context: http://osgeo-org.1560.n6.nabble.com/Problem-in-showing-Layer-on-JmapPane-tp5028912p5029151.html
Sent from the geotools-gt2-users mailing list archive at Nabble.com.

Re: [Geotools-gt2-users] Problem in showing Layer on JmapPane

[Michael Bedward <michael.bedward@gm...>]

Hello Kapil,

Your code is much more complicated that it needs to be and is also
using very low-level classes / methods instead of higher-level
user-friendly classes.

Please study the GeoTools feature tutorial:

http://docs.geotools.org/latest/userguide/tutorial/feature/csv2shp.html

There you will see a better, easier way to create a SimpleFeatureType:

http://docs.geotools.org/latest/userguide/tutorial/feature/csv2shp.html#another-way-to-build-a-simplefeaturetype

Also, you should use GeometryFactory methods rather than creating
geometries "by hand", e.g. to create a MultiPolygon object:

http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/geom/GeometryFactory.html#createMultiPolygon(com.vividsolutions.jts.geom.Polygon[])

Michael


On 23 January 2013 17:56, kapil <kapilsharma047@...> wrote:
> Hi Michael,
>    Thanks for helping me but i am still unable to solved out my problem in
> PolygonfeatureHelper class, I make a createPolygonFeature() which return
> SimpleFeature and this method call createFeatureType()
> Here is the code
>
>
> public static SimpleFeature createPolyFeature(Geometry geom, String name ) {
>     GeometryFactory gf = new GeometryFactory();
>
>     if(geom instanceof Polygon ){
>         geom = new MultiPolygon(new Polygon[] {(Polygon)geom  },new
> GeometryFactory());
>     }
>     Object[] featureAttributes = { geom, name };
>     SimpleFeatureBuilder sfb = new
> SimpleFeatureBuilder(createFeatureType());
>    sfb.add(featureAttributes);
>
>     SimpleFeature f = sfb.buildFeature(null);
>     return f;
>   }
> public static SimpleFeatureType createFeatureType() {
>
>       AttributeDescriptor[] typesNew = new AttributeDescriptor[2];
>       AttributeTypeBuilder build = new AttributeTypeBuilder();
>       build.setBinding(String.class);
>       build.setNillable(true);
>       build.setLength(48);
>       build.defaultValue(null);
>       build.setName("NAME");
>       AttributeDescriptor descriptor = build.buildDescriptor( "NAME" );
>
>       AttributeTypeBuilder build1 = new AttributeTypeBuilder();
>       build1.setBinding(MultiPolygon.class);
>       build1.setName("the_geom");
>       GeometryType geometryType = build1.buildGeometryType();
>       GeometryDescriptor geomdescriptor =  build1.buildDescriptor(
> "the_geom",   geometryType );
>
>       typesNew[0] = descriptor;
>       typesNew[1] = geomdescriptor;
>       SimpleFeatureTypeBuilder sf = new SimpleFeatureTypeBuilder();
>       sf.addAll(typesNew);
>       sf.setName("Poly");
>
>       SimpleFeatureType ft = sf.buildFeatureType();
>        return ft;
> }
>
>
>
>
> --
> View this message in context: http://osgeo-org.1560.n6.nabble.com/Problem-in-showing-Layer-on-JmapPane-tp5028912p5029151.html
> Sent from the geotools-gt2-users mailing list archive at Nabble.com.
>
> ------------------------------------------------------------------------------
> Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS,
> MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current
> with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft
> MVPs and experts. ON SALE this month only -- learn more at:
> http://p.sf.net/sfu/learnnow-d2d
> _______________________________________________
> GeoTools-GT2-Users mailing list
> GeoTools-GT2-Users@...
> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users