Re: [Rdfapi-php-interest] Unbound Prefix

[P.L.Coetzee <P.L...@op...>]

Hi Marco,

Unless you've used them this way around in your instance data, you've =
got the namespace prefix and URI swapped over for rdf: and rdfs: - as =
you have them, you're asking for properties =
<http://www.w3.org/1999/02/22-rdf-syntax-ns#label> and =
<http://www.w3.org/2000/01/rdf-schema#type>, not =
<http://www.w3.org/2000/01/rdf-schema#label> and =
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>. My guess is that the =
query which will give you what you want is:

PREFIX rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?userstory
WHERE {
  ?res rdfs:label ?userstory .
  ?res rdf:type ?type .
}

Hope that helps your debugging :)

Cheers,
Peter


-----Original Message-----
From: rdf...@li... on behalf of =
Marco Rieth
Sent: Tue 21/08/2007 14:44
To: rdf...@li...
Subject: Re: [Rdfapi-php-interest] Unbound Prefix
=20
Ok, the space between : and < seems to work. The SparqlParser doesn't
complain anymore. But now I have the problem, that no results are =
returned,
although there should be...

Trying to select all triples works just fine:

PREFIX rdfs: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdf: <http://www.w3.org/2000/01/rdf-schema#>
SELECT *
WHERE { ?res ?blah ?more }


But as soon as I try to select a specific triple using the properties
rdfs:label and rdf:type, the result is false:

PREFIX rdfs: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdf: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?userstory
WHERE {
?res rdfs:label ?userstory
?res rdf:type ?type }

Could it be, that the rdf-export from the wiki (it's the rdf-export from
semantic media wiki) is not compatible with RAP? Or is my query still =
messed
up?