Re: prefix management

Looks like you're using thea v1 - there is a newer version that handles
OWL2 ontologies, with a redesigned API:

https://github.com/vangelisv/thea

Not sure if that is affecting your NS issue. I would try first
experimenting with the core semweb libraries, parsing using rdf_load,
seeing if you get the expected behavior first


On Tue, Oct 22, 2013 at 7:33 AM, Michele Palmia <[email protected]> wrote:

> Hi everybody,
>
> I'm a newby of SWI-Prolog so sorry for huge mistakes and embarrassing
> questions.
> I'm trying to debug some problems with an owl  file I'm working with and
> I'm facing prefix issues in prolog. My prolog shell
> imports thea/owl_parser, semweb/rdf_db, semweb/rdf_edit, semweb/rdfs and
> semweb/owl.
>
> After parsing the owl file with
> ?- owl_parse('file_path.owl', false, false, true).
> I try to check if namespaces have been imported (because it seems like they
> didn't) using
> ?- rdf_current_prefix(A, B).
> or
> ?- rdf_current_ns(A,B).
>
> I get an error saying
> ERROR: toplevel: Undefined procedure: current_ns/2 (DWIM could not correct
> goal)
> in both cases.
>
> Calling
> ?- rdf_register_ns(test, 'somestring')
> on the other hand, works like a charm.
>
> Am I not using some libraries I should import? Am I calling the wrong
> construct?
> By the way, is it normal for owl_parse not to import namespaces? What
> should I change to let owl_parse import them?
>
> Thank you in advance,
> Michele Palmia
> Università degli Studi di Padova
> -------------- next part --------------
> HTML attachment scrubbed and removed
> _______________________________________________
> SWI-Prolog mailing list
> [email protected]
> https://lists.iai.uni-bonn.de/mailman/listinfo.cgi/swi-prolog
>
-------------- next part --------------
HTML attachment scrubbed and removed