Andrea Aime wrote:
> Also, filter capabilities as is may not handle this case
> properly. The thing is, the capabilities as of today tell
> us which filters and functions the datastore supports
> _natively_,  whilst for these dynamic function case,
> we'd need an information on whether the function is supported
> _at all_.

That is correct. My prototype works by claiming native support for any 
unrecognised function, to trick the pre-post filter splitting into 
passing it to the database. This is a misuse of filter capabilities, and 
prevents any sensible reporting of which functions are actually supported.

-- 
Ben Caradoc-Davies <[EMAIL PROTECTED]>
Software Engineer, CSIRO Exploration and Mining
Australian Resources Research Centre
26 Dick Perry Ave, Kensington WA 6151, Australia

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