Hi Have you looked at the Virtuoso URL rewrite rules as detailed at:
http://docs.openlinksw.com/virtuoso/rdfiridereferencing.html#urlrewriting
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtLinkedDataDeployment#URL%20Rewriting
Best Regards
Hugh Williams
Professional Services
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Universal Data Access, Integration, and Management Technology Providers
On 16 Sep 2013, at 18:02, Julien Cojan <julien.co...@inria.fr> wrote:
> Hello there,
>
> I have set up a Virtuoso server with DBpedia data and URI dereferencing
> (dbpedia VAD).
> I have introduced alternative URIs for DBpedia resources like for dbpedialite.
> The new URIs have a different namespace and they are related to DBpedia
> entries by owl:sameAs relations.
>
> For instance
> <http://fr.dbpedia.org/resourceById/1544866> owl:sameAs
> <http://fr.dbpedia.org/resource/Charles_Darwin>
>
> I would like to make the new URIs dereferencable with a simple http 302
> redirect towards the corresponding DBpedia resource.
>
> Is there a simlpe way to take into account RDF data to define http redirects
> in Virtuoso.
> I tried to define a vsp page to which I will redirect the virtual directory
> '/resourceById' :
> <?vsp
> declare _resource_, _resource_uri_, meta, data any;
>
> _resource_ := get_keyword ('res', params, '');
> _resource_uri_ := registry_get('dbp_domain') || _resource_;
>
> exec (sprintf ('sparql '||
> 'select ?o where { <%S> owl:sameAs ?o }', _resource_uri_), null, null,
> vector (), 0, meta, data);
> if (length (data))
> {
> http_request_status ('HTTP/1.1 302 Found');
> http_header ('Location: '|| data[0][0] ||'\r\nAccept:
> application/rdf+xml, text/html\r\n');
> }
> else{
> http_request_status ('HTTP/1.1 404 Not found');
> }
> ?>
>
> But I get stuck with content negotiation, "Content-Type: text/html;
> charset=UTF-8" is added to the header and thus I get a http 406 error when I
> ask for another content type like "application/rdf+xml".
> Is there be a nicer way to do this ?
>
> Thanks for any help,
> Julien
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