Re: [udig-devel] Adding layers from code

[Jody Garnett <jgarnett@xxxxxxxxxxxxxxx>]

Johan C. de Koning wrote:
> Hello,
>
> How could I add layers to the map programmatically? Just like the 
> url’s (with parameters) inside I umap file are stored, I want these 
> like of urls to one or more layers from the code to a map. I looked at 
> the code how a project is opened, but I was wondering if this could 
> also be done without using the different Project classes.
>
> So for example I have an url for a WMS server (with layers specified) 
> I want to add these to a map without defining that I am going to add 
> WMS layers (or use the catalog.wms classes). It should be done by the 
> catalog. I found the code inside the UDIG Developers Guide about 
> creating a map from the code, but using a GeoResource adds all the 
> layers from a url (which I don’t).
Yes, the catalog has a lookup function that will basically figure out 
the best match for your url (you never have to notice if it was based on 
a WMS or WFS or shapefile).

For an example of this in action please review the code for loading and 
save OWS Context documents.
> Hopefully somebody can give me a little piece of example code about 
> how to get this working.
The programmers guide (included with your default uDig install or on the 
webstite) should be a help here - Look in the GIS Platform section on 
how to get a hold of georesources without knowing before hand what type 
they are. From there you can follow the example you have already found.
Jody