Hello all, I have imported a turtle file into a RDF graph in Virtuoso and I have made a rewrite rule for dereferencing the URIs. I notice strange behaviour with some of the URIs in this graph. For those URIs, the data format when directly dereferencing the URI always seems to be Turtle. This is noticeable by just opening a URI in a web browser. An example of a URI that resolves to HTML (as it should) is: (A) http://lod.geodan.nl/hhnk/zoneringen/zonering. An example of a URI that should resolve to HTML but turns out as Turtle is: (B) http://lod.geodan.nl/hhnk/zoneringen/hhnk.
I have spent quite some time trying to find out the cause of this difference. I think there is nothing wrong the rewrite rule. It rewrites the URI to a SPARQL DESCRIBE query with a format specification. When I issue a request in that shape I notice the same difference in content type. The following command (A) gets a HTML response: curl -g -i "http://lod.geodan.nl/sparql?query=DESCRIBE+<http://lod.geodan.nl/hhnk/zoneringen/zonering>+FROM+<http://lod.geodan.nl/hhnk/zoneringen/>&format=text/html" But this one (B) gets a Turtle response: curl -g -i "http://lod.geodan.nl/sparql?query=DESCRIBE+<http://lod.geodan.nl/hhnk/zoneringen/hhnk>+FROM+<http://lod.geodan.nl/hhnk/zoneringen/>&format=text/html" The funny thing is that in both cases the HTTP response header claims the format to be text/html. How could this behaviour be explained? I have tried to look at the problem from different angles but I am stumped now. Regards, Frans ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Virtuoso-users mailing list Virtuoso-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtuoso-users
