Hi Egbert, Thanks for the answer. Does that mean that all Fedora relations must be uris? And if I want a literal then I must make my own predicate?
I solved it now with <collection xmlns="info:dpc/relations#">ABC_0123</collection> And that works for me (I don't want my collections to be objects in the repository (at least, not yet) ). Regards, Hans -----Original Message----- From: Egbert Gramsbergen [mailto:e.f.gramsber...@tudelft.nl] Sent: September 06, 2012 12:31 To: fedora-commons-users@lists.sourceforge.net Subject: Re: [fcrepo-user] question sparql/rels-ext Hello Hans, First of all: the object of this relation should not be al literal but an uri resource. So this for collection with PID my:collection: <isMemberOfCollection xmlns="info:fedora/fedora-system:def/relations-external#" rdf:resource="info:fedora/my:collection"/> and your query will be: prefix e: <info:fedora/fedora-system:def/relations-external#> select ?s where { ?s e:isMemberOfCollection <info:fedora/my:collection>} Second: if the object of a relation is a plain literal you should not use rdf:parseType="literal" because that is for xml. Just omit it: <someRelation xmlns="some:namespace/">ABC_0123</someRelation> I hope this helps (and don't forget the info:fedora/ part like I do about 10 times a day) Egbert Gramsbergen -----Original Message----- From: hans [mailto:j.c.m.scho...@uva.nl] Sent: donderdag 6 september 2012 10:45 To: fedora-commons-users@lists.sourceforge.net Subject: [fcrepo-user] question sparql/rels-ext Hi, I'm trying to add some relations in my rels-ext like so: <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";> <rdf:Description rdf:about="info:fedora/unicum:uba.items.12903be24c35550edd1be17a7b3d9f12"> <isMemberOfCollection xmlns="info:fedora/fedora-system:def/relations-external#" rdf:parseType="literal"> ABC_0123 </isMemberOfCollection> </rdf:Description> </rdf:RDF> When querying the triplestore with prefix e: <info:fedora/fedora-system:def/relations-external#> select ?s where { ?s e:isMemberOfCollection 'ABC_0123'} I have no results Querying with prefix e: <info:fedora/fedora-system:def/relations-external#> select ?s ?o where { ?s e:isMemberOfCollection ?o} gives me: "s","o" info:fedora/unicum:uba.items.12903be24c35550edd1be17a7b3d9f12,ABC_0123 Why do i not have a result with the first query? Regards, Hans -- View this message in context: http://fedora-commons.1317035.n2.nabble.com/question-sparql-rels-ext-tp7578332.html Sent from the Fedora Commons Users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users
