Re: [Gwt-openlayers-users] Fetching VectorFeatures via WFS and parsing GML

[Edwin C. <com...@gm...>]

Hi Mikael,

Just I quick reply:

Have you looked at the latest BasicWFS example code in the showcase?
There is some stuff that needs to be added to WFS protocol, but it
should work similar to the examples on dev.openlayers.

The only thing is that the GwtOpenLayersProxy is not working properly,
perhaps because I put in resourceUrl where it should be targetUrl.

The proxy class should be refactored in my opinion so that the url
param is not different for GET and POST.

The docs are not in good shape everywhere, so that's a bit of a pity indeed.

If anyone feels free to work on the GwtOpenLayersProxy and get the
BasicWFS sample running that would be great. I won't have time to work
on it as I just became father of a beautiful daugther.

Greetings,
Edwin



On 3 March 2010 19:25, Mikael Couzic <mik...@cl...> wrote:
> Hi all,
>
>
> I'll be working on a project involving GWT-OL in the following weeks, and I
> could use a little advice on how I am going to proceed.
>
> To be quick, I'll be displaying regions on a map, and the color of each
> region will be dynamically calculated on the fly based on GWT server-side
> values. To complicate things up, some regions will be groups of regions,
> also defined on the GWT server.
> My first idea was to set up a GeoServer and fetch the features with WFS
> GetFeature requests. From there I could display the features with whatever
> style I wanted, and I could even make groups using
> OpenLayers.Geometry.Collection.calculateBounds (or so I hope I could).
>
> But then I couldn't find a simple way to get features (and not layers) from
> WFS, and I could'nt even manage to parse my GML with the corresponding GML3
> class. I'm feeling a bit helpless...
>
> The way I see it now, if I stay stuck, here's what I'll have to do :
> Fetch the features with com.google.gwt.http.client
> Parse the GML with com.google.gwt.xml.client
> And from that extract the posList, then generate the points, from that
> instantiate the LinearRings and then I'll have my features. I feel like I
> might be reinventing the wheel somewhere.
>
> Just to give you the idea, my dream object would be like :
> List<VectorFeature> features =
> MyDreamObject.getFeaturesFromRemoteGML(WFS_URL);
>
> Has anyone ever tried something similar ?
> Do you know anything that could help me ?
> Any help would be MOST appreciated.
>
> Thanks !
>
>
> --
> Mikael
>
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