Re: [Geotools-devel] GeoTIFF job code

[Martin D. <mar...@te...>]

Bryce L Nordgren a =E9crit :

> Stage 2: Write a "CoordinateSystemAntiAuthorityFactory" which takes a
> coordinate system and returns the registration code and authority name.
> Suggest a better name for this if you're concerned. :)

Some observations:

   * Using CoordinateReferenceSystem (the GeoAPI replacement for
     CoordinateSystem), it is possible to just invoke 'getIdentifiers()'
     in order to get the EPSG identifier, providing it was specified at
     the CRS creation time.

   * Otherwise, I guess there is two possible approachs:

     - "CoordinateSystemAntiAuthorityFactory" search in the EPSG database
       for all CRS attributes like the coordinate system axis, the datum,
       etc. It may be a difficult task and would probably requires one
       anti-authority factory for each authority factory.

     - "CoordinateSystemAntiAuthorityFactory" just contains a poll of
       well-know CRS with their identifiers, in which case the problem is
       much easier but also has more limited capabilities.


	Martin.