Thank you very much to you, Frank, and Camp To Camp. This is a very welcome addition for file based datasources. GDAL is becoming more and more powerful, versatile, useful and ... big. Maybe you could add a -straight clause so to avoid the parser. GDAL/OGR shoud remain fast when used only as a conversion library. c
on Sun, 01 Aug 2010 20:03:05 Frank Warmerdam <warmer...@pobox.com> wrote: > Subject: [gdal-dev] OGR SQL Parser/Evaluator Overhaul > > Folks, > > With the support of Camp To Camp I have been working on an overhaul for the > OGR SQL parsing engine. The minimum goal was to support functions in the > column definitions for the output record set of a SELECT, but in order to > achieve this in a reasonable way I have worked towards a substantial > generalization of expression in OGR SQL and extending them to column > definitions. > > I have written up a preliminary RFC for review at: > > http://trac.osgeo.org/gdal/wiki/rfc28_sqlfunc > > I am seeking feedback before I polish it off and call for a vote this > week. > > I will note that in my local development tree I now have this overhauled > implementation working, including the autotest/ogr/{ogr_join_test.py, > ogr_sql_test.py,ogr_index_test.py} test scripts all passing without > alteration. > > Best regards, -- -------------------------------------------------------------------------- Carlo A. Bertelli Charta servizi e sistemi per il territorio e la storia ambientale srl Dipendenze del palazzo Doria, vc. alla Chiesa della Maddalena 9/2 16124 Genova (Italy) tel. +39(0)10 2475439 fax +39(0)10 2475439 gsm:+39 393 1590711 e-mail: berte...@charta.acme.com http://www.charta.acme.com -------------------------------------------------------------------------- _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
