[udig-devel] MapGraphics and Layer

["Andy Czerwonka" <czerwonka@xxxxxxxxxxxxxxxx>]

In one of the more recent 1.1.x releases, my code broke.  I'm creating a 
layer with a MapGraphic, but now I'm not able to create that layer.  The 
code looks like this... (it falls out on the assert about halfway down)

    public void createGpsLayer() {
        Map map = ApplicationGISInternal.getActiveMap();

        try {
            IGeoResource gpsDataResource = null;
            URL url = new URL(MapGraphicService.SERVICE_URL, "#" + 
GpsMapGraphic.ID); //$NON-NLS-1$
            List<IResolve> matches = 
CatalogPlugin.getDefault().getLocalCatalog().find(url,
                new NullProgressMonitor());
            if (!matches.isEmpty())
                gpsDataResource = (IGeoResource) matches.get(0);
            if (gpsDataResource == null) {
                List<IService> results = 
CatalogPlugin.getDefault().getServiceFactory()
                    .acquire(url);
                for (IGeoResource resource : results.get(0).members(new 
NullProgressMonitor())) {
                    if 
(resource.getIdentifier().getRef().equals(url.getRef())) {
                        gpsDataResource = resource;
                        break;
                    }
                }
            }
            assert null != gpsDataResource : "Somethig is wrong" // it falls 
our here...
            _gpsLayer = map.getLayerFactory().createLayer(gpsDataResource);
            _gpsLayer.setName(LAYER_NAME);
            _gpsLayer.setSelectable(true);
            int top = map.getMapLayers().size();
            map.sendCommandSync(BasicCommandFactory.getInstance().createAddLayer(_gpsLayer, 
top));
            _mapGraphic = _gpsLayer.getResource(GpsMapGraphic.class, null);
            Activator.getDefault().getModel().addEventCollectionListener(_mapGraphic);
            startRefresher();
        } catch (MalformedURLException e) {
            AppLogger.log(e);
        } catch (IOException e) {
            AppLogger.log(e);
        }

    }

Help appreciated...