[postgis-devel] KML from PostGIS patch

[Markus Schaber]

Hi, Eduin,

Eduin Carrillo wrote:
> Sounds good. There is another function using this kind of wrappers what I can
> follow to do it? Regress tests are on the road too.

I've just created an example 'on-the-fly', using the EWKT function:

CREATE FUNCTION TransformedEWKT(geometry, int4) RETURNS text
AS 'SELECT asEWKT(transform($1,$2))' STRICT IMMUTABLE LANGUAGE SQL;


So if you expose your function as Foo(), you can add a TransformedFoo()
(or expose your function as PlainFoo, and add Foo() as wrapper).

This way, those people who don't need to transform first (because they
keep the data in a compatible coordinate system) can skip the
transform() overhead.

HTH,
Markus
-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

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