On Thu, Dec 5, 2013 at 9:07 PM, Phil Scadden <p.scad...@gns.cri.nz> wrote:
> This is just an idea. Being forced to do redirect WFS via a proxy where
> we are altering the response XML before passing it on.
> Application-schemas look pretty much designed for this kind of thing but
> what would really help would some kind of plugin architecture so can
> execute your own code within the transformation.
>
To some extent we already have it, it's called filter functions, which I
believe
can be called from app-schema, and the scripting modules could allow
one to write new functions without having to deal with java (funny, I
thought this
was already supported, but I don't see it in the official docs here:
http://docs.geoserver.org/stable/en/user/community/scripting/hooks.html).
The problem there is that filter functions are a one way trip, which means
they are ineffective if you want to efficiently filter on the fields you're
generating out
of a function call.
It would be interesting to have some extended notion of function, that also
knows
how to invert itself in a filter, that is, replace itself with a filter
against its input
data (for those where this makes any sense, of course)
Cheers
Andrea
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