[Users] How to feed a Grid from several WFS Layers

[Florent Coste]

Hello All.

@Andreas : yes for the moment this is exactly what i use (same WFS server,
enumerated feature list), but this breaks the functionnality i want to have
"if i deactivate a layer on my map, the grid should be updated accordingly."
I don't want to add extra layer switching menu, the user should use the
standard OpenLayers/French Geoportail layer switcher.

@Matt : thank you for the plumbing tip. From my point of view, the design
would me more at the Vector level : could not it be possible to write a
Vector implementation  that is a Composite (like the design pattern) of
several Vector instances ?

2010/5/18 Andreas Hocevar <ahocevar at opengeo.org>

> Hi,
>
> if your WFS supports multiple feature types per request, you should also be
> able to configure your OpenLayers vector layer with a comma separated list
> of feature types. The requirement, of course, is that all WFS layers are on
> the same server and have the same namespace.
>
> Regards,
> Andreas.
>
> On May 18, 2010, at 14:36 , Matt Priour wrote:
>
> > You need to use a feature store for your grid that contains all of the
> features you want to use.
> > To do this you will need to add a 'featuresadded' & 'featuresremoved'
> event listeners to your WFS layers that append or remove the features from
> the feature store.
> > A feature store typically syncrhonizes with a single layer, which is what
> is happening in your current Grid, however to synchronize with multiple
> layers, you will have to provide a bit of the plumbing yourself.
> > Matt Priour
> > Kestrel Computer Consulting
> >
> > From: Florent Coste
> > Sent: Tuesday, May 18, 2010 4:43 AM
> > To: users at geoext.org
> > Subject: [Users] How to feed a Grid from several WFS Layers
> >
> > Hello
> >
> > I'm able to synchronize a Grid with a WFS layer linked to a Map, but how
> to do with several WFS layers ?
> > I want to have the possibility to deactiviate/activate each layer one by
> one
> >
> > All the WFS layers have the same properties so they can all be displayed
> correctly in the grid.
> > I have searched in the API without success
> >
> > Regards,
> > Florent
> >
> >
> >
> >
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>
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
>
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