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Re: [udig-users] [udig-devel] Add resources to a layer
Perhaps we are talking different; it is not that I am withholding code from you - it is that the request to add multiple resources does not make sense.

Question:
a) Do you want to add multiple points to an existing layer representing a shape file? If so please ask the layer for a FeatureStore and call the addFeatures method
-or-
b) do you want to change a layer showing points from a shape file; over to showing points from a database table? If so you will need to change what GeoResource the layer is using.

Layer.void setGeoResource( IGeoResource value ) is the method; because it is a read/write method you will need to call it from a command.

final IGeoResource changeResource = ….
final ILayer layer = ….
layer.getMap().sendCommandAsync( new AbstractCommand(){
   public String getName(){ return "Change Resource"; }
   public void run(IProgressMonitor monitor){
       ((Layer)layer).setGeoResource( changeResource );
       layer.refresh(null); // trigger redraw
   }
});

-- 
Jody Garnett

On Monday, 6 February 2012 at 6:22 PM, Alberto Debiasi wrote:

For example:

I would like to create a resource Point into an existing layer.
Can you show me the code please?

Alberto

2012/2/6 Jody Garnett <jody.garnett@xxxxxxxxx>
Well you can set the ID on a layer (make your own command for this) or change what data it refers to; and it should pull a new resource out of the uDig catalog.

However a layer only does one resource at a time (in order to work with many it will ask the catalog if it knows any other resources that are associated with the layer it is displaying).

-- 
Jody Garnett

On Monday, 6 February 2012 at 6:15 PM, Alberto Debiasi wrote:

Instead of creating a new layer with some resources I would like to add some resources to an existing layer (without create a new one).

Alberto.

2012/2/6 Jody Garnett <jody.garnett@xxxxxxxxx>
Interesting; I usually just pass the AddLayersCommand with more or more resources (and watch it create the default styles etc…).

I don't understand your question about "add to an existing layer some resources". The layer looks up the GeoResource to use in the catalog; using the Style to aid in drawing etc...

-- 
Jody Garnett

On Saturday, 4 February 2012 at 3:11 AM, Alberto Debiasi wrote:

Hello everybody,

I use the following code in order to create a new layer with some resources:

           .....
           try{
           IMap map = ApplicationGIS.getActiveMap(); 
           LayerFactory layerFactory = map.getLayerFactory();
        Layer layer = layerFactory.createLayer(resource);
             AddLayerCommand cmd = new AddLayerCommand(layer);
        map.sendCommandASync(cmd);         
           }catch(Exception e ){
               e.printStackTrace();
           }

I have a simple question:
How can I add to an existing layer some resources?


Thanks.
Alberto


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