Ivan, Looks like you're the first user who knows about BASE :) I'll fix this tomorrow.
Best Regards, IvAn. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ivan Herman Sent: Tuesday, May 29, 2007 7:41 PM To: [email protected] Subject: [Virtuoso-devel] Problem with BASE? Kingsley, Orri I think I have asked that before: where should I send these types of bug reports? Is there a mailing list for this? Bug seems to be with BASE. Consider the following query: BASE <http://www.fosi.org/projects/powder/multiple_examples.rdf> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX foaf: <http://xmlns.com/foaf/0.1/> PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX dcterms: <http://purl.org/dc/terms/> PREFIX wdr: <http://www.w3.org/2007/05/powder#> PREFIX ex: <http://example.org#> SELECT ?maker ?rs ?setProp ?setValue ?ds ?dsProp ?dsValue ?issued ?validUntil FROM <http://www.fosi.org/projects/powder/multiple_examples.rdf> WHERE { <#DR3> foaf:hasMaker ?maker . <#DR3> wdr:hasScope ?rs. <#DR3> wdr:hasDescription ?ds . OPTIONAL {?rs ?setProp ?setValue} . OPTIONAL {?ds ?dsProp ?dsValue} . OPTIONAL {<http://www.fosi.org/projects/powder/multiple_examples.rdf#DR3> dcterms:issued ?issued} . OPTIONAL {<http://www.fosi.org/projects/powder/multiple_examples.rdf#DR3> wdr:validUntil ?validUntil} } It returns an empty result set. If the <#DR3> above are replaced by <http://www.fosi.org/projects/powder/multiple_examples.rdf#DR3> then there are explicit results. Note that the two queries (both using and not using BASE) work correctly on Joseki with identical results. Ivan -- Ivan Herman, W3C Semantic Web Activity Lead URL: http://www.w3.org/People/Ivan/ PGP Key: http://www.cwi.nl/%7Eivan/AboutMe/pgpkey.html FOAF: http://www.ivan-herman.net/foaf.rdf
