[fdo-internals] RFC-28 - Add X, Y, Z and M Expression Functions

[Frank Warmerdam]

Robert Fortin wrote:
> Since there was no feedback since the last update and review request for 
> RFC-28, I’m calling for a vote by the FDO PSC members.
> 
>  
> 
> http://trac.osgeo.org/fdo/wiki/FDORfc28

Robert,

Apparently I missed the part of the discussion where it was decided that
adding additional accessors was outside the scope of this RFC.  I had
expected the StartPoint, EndPoint, NumPoints and PointN accessors to be
added.  Is adding them at the same time difficult?  It seems this would
give us a respectible set of accessors (possibly along with something to
access component geometries within a collection).

I'd add it quite bothers me that this sort of functionality is strictly
per-provider and that there isn't generic machinery to provide it to all
the non-RDBMS based providers in a convenient way.

I'm "-0" on the RFC as proposed because I feel a more comprehensive solution
to geometry accessors is desirable at this time rather than just adding things
in dribs-and-drabs.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent