On Tue, Mar 10, 2015 at 11:07 PM, Martin Davis <mtncl...@gmail.com> wrote:
> Not sure I get all the constraints around this 100%, but generally the
> idea sounds good. I like the idea of being able to take control of the
> filter condition SQL being used (which pretty much requires access to the
> $bbox parameter). And it's a good idea to make it optional, so it isn't
> always executed.
>
> Just to be clear, the %BOX%{and ST_Intersects(g.geom,$bbox)} syntax would
> be added to the SQLView SQL text?
>
Yep
> Is the $bbox variable already available?
>
>
No, it would be something new that we replace only withing the context of a
%BOX%{....} thing (aside, not really in love with the syntax,
any suggestion to make it look better? or just can just say that you like
it)
> Would an alternative be to use the same kind of syntax to specify the
> actual geometry column to use in the bbox filter? That would be less
> general, but also less error-prone.
>
No, that would require geoserver to understand the sql, and know where to
add the filter, as said, would like to avoid going there.
You know your sql, you place the optional box filter in the suitable
position, with the suitable syntax.
For the point from x, y case we might also want to provide
minx,miny,maxx,maxy.... actually, just providing these
could also be the way to go, if you want to build an envelope you have the
spatial db syntax to do so.
Just thinking out loud.
Cheers
Andrea
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