[Gdal-dev] Using the Geo::GDAL namespace for the Perl wrappers

[Ari Jolma]

Here's the first design: http://map.hut.fi/gdal-perl/Geo-GDAL.html

It's mainly about tags for importing constructors, other functions or 
GDAL ad OGR constants into the module users namespace.

Ari Jolma kirjoitti:
> This is long overdue, hopefully it is not too late.
>
> The Perl wrappers have had names gdalconst, gdal, ogr, and osr. In the 
> Perl world, the namespace is global (literally) and CPAN 
> (Comprehensive Perl Archive Network) is the realization. So, these 
> modules should be in the Geo::GDAL namespace.
>
> I've just been playing with it and I think I know how to configure 
> things so that users can say something like:
>
> use Geo::GDAL qw(:geom_types);
> ...
> my $driver = Geo::GDAL::GetOGRDriver('..');
> ...
> my $geom = Geo::GDAL::Geometry->new($wkbPolygon);
> ...
>
> I.e. the module Geo::GDAL takes care of importing the workhorse 
> modules, which are renamed Geo::GDAL::gdal etc. and exporting, if user 
> wishes, variables like $wkbPolygon. There are few problems in putting 
> GDAL and OGR into same namespace, for example both have GetDriver, but 
> it feels unnecessary to have Geo::GDAL::OGR. Or what do you think?
>
> Besides the obvious problem of breaking working code, do you see any 
> other issues in this proposal?
>
> This would let me or somebody design a bootstrap Geo::GDAL module for 
> inclusion into CPAN, which either prints out: "go and install GDAL" or 
> does it automagically (that would be serious AI :-) for him/her.
>
> Ari
>


-- 
Prof. Ari Jolma
Kartografia ja Geoinformatiikka / Cartography and Geoinformatics
Teknillinen Korkeakoulu / Helsinki University of Technology
POBox 1200, 02015 TKK, Finland
Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma