WKB Should output SRID of 0

[cfis]

Postgis 2.x now assumes that 0 represents an "unknown" srid. So in our db we have an enforce_srid constraint that says the srid should be 0 when storing indoor features.

Problem is geos intentionally doesn't output a 0 srid, here is the code:

void WKBWriter::writeSRID(int SRID) {

if (includeSRID && SRID != 0)

writeInt(SRID);

}

This breaks our app because when it inserts a record to postgis it sends the new geometry using the wkb format. Since geos doesn't emit the 0 srid, the enforce constraint fails because the srid isn't set at all (and we want it to be 0).

Could this check be removed to bring geos in line with postgis?

[strk]

Absence of SRID is considered to be the same as SRID=0 by PostGIS. What does your postgis_full_version() say ?

[strk]

lack of feedback