[postgis-devel] LWgeom and PostGIS Java classes

[strk at refractions.net]

On Wed, Dec 15, 2004 at 05:50:18PM +0100, Markus Schaber wrote:
(...)
> Would it be possible to add the SRID to geometry_send? How much third
> party applications are there that already depend on the internal
> representation? (I guess none.)
> 
> A way I could imagine would be to add the 4 byte ASCII text "SRID" plus
> 4 bytes int containing the actual SRID after the WKB. As the WKB
> contains counters for all arrays in it, a non-srid aware parser will
> simply ignore those extra bytes.

Yes it is possible.
SRID presence could be encoded as a bit in the 4bytes 'type',
as it is already done internally.
I'll make some research on this.

--strk;