[udig-devel] Problem with FeatureCollection, FeatureTableControl and CollectionListener

[Jesse Eichar]

And thank you for this email.  You just pointed out the cause of a bug  
that has been driving me mad for ages.  :)

Jesse

Le 14-Feb-08 à 4:26 PM, Ingmar Eveslage a écrit :

>
> Hello,
>
> i try to do the following:
>
> //create FeatureType
> 	CoordinateReferenceSystem crs = CRS.decode("EPSG:4326");
> 	AttributeType point =
> AttributeTypeFactory.newAttributeType("Location",Point.class,true,
> null,null,crs );
> 	AttributeType name = AttributeTypeFactory.newAttributeType("Name",
> String.class, false, null, "Station", null);
> 	FeatureType stationFeatureType =  
> FeatureTypeBuilder.newFeatureType(new
> AttributeType[] { point, name }, "StationFeatureType");
>
> //create IGeoResource
> 	IGeoResource stationGeoResource =
> CatalogPlugin 
> .getDefault 
> ().getLocalCatalog().createTemporaryResource(stationFeatureType);
>
> //create list of IGeoResource
> 	List <IGeoResource> geoResourceList = new LinkedList<IGeoResource>();
> 	geoResourceList.add(stationGeoResource);
>
> //create new map
> 	ApplicationGIS.createAndOpenMap(geoResourceList, null, true);
>
> //get the new layer
> 	ILayer stationLayer = null;
> 	List <ILayer> layerList = network.getEditorMap().getMapLayers();
> 	for (ILayer layer: layerList) {
> 		if (layer.getName().compareTo("StationFeatureType") == 0)
> 			stationLayer = layer;
> 	}
>
> //get FeatureSource
> 	FeatureSource stationFeatureSource =
> stationLayer.getResource(FeatureSource.class, null);
>
> //get FeatureCollection
> 	FeatureCollection features = stationFeatureSource.getFeatures();
>
> //AFTER all this i create i view wich displays a FeatureTableControl
> FeatureTableControl ftc = new FeatureTableControl(parent, features);
>
> All seams fine, but i notices a few problems:
>
> 1) the automatic created column header for the AttributeType point is
> "GEOMETRY". but i defined it as "Location". The first thing is a
> nullPointerException if the FeatureTableControl wants to display a  
> feature.
> When i change the name of my attributetype to "GEOMETRY" all is  
> fine. But i
> think this is a bug.
>
> 2) if i add features to the layer, no updates in the table will be
> displayed. and i do not realy know which listener i should take. i  
> tried the
> following:
> every implementation of the changed method makes a tfc.update.
>
> map.getEditManager().addListener(view_i_created);
> 	--> all updates are seen, but if i make i commit of the station  
> layer i get
> a "invalid thread access exception"
> stationFeatureSource.addFeatureListener(view_i_created);
> 	--> all updates are listed in the table, but the commit of the  
> station
> layer makes no update. so all the FID are still "new*" and not the  
> real one
> features.addListener(view_i_created);
> 	--> nothing happens. no CollectionEvent fired
>
> i looked in the FeatureTableControl implementation and i think this
> implementation uses the CollectionListener interface too. but when no
> CollectionEvents are fired, no updates are displayed.
>
> i hope someone can help me with my 2 problem. perhaps this are bugs  
> or do i
> missunderstand the api?
>
> thanks forward
>
> Ingmar
>
>
> -- 
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