Help needed with QueryBuilder

[vadimasg]

Trying to build a query as follows (ignore prefixes):

select ?org
where {
?org rdf:type cids:Organization .
}

Th code is here:

SparqlVariable org = new SparqlVariable("org");
Uri obj2 = new Uri(new Uri("cids:"), "Organization") ;
var queryBuilder = QueryBuilder
.Select(new SparqlVariable[] { org })
.Where(
(triplePatternBuilder) =>
{
triplePatternBuilder
.Subject(org)
.PredicateUri("rdf:type")
.Object(obj2);
});

The query which is built is as follows:

SELECT ?org WHERE
{ ?org rdf:type <cids:Organization> . }

What might be wrong here?
Really appreciate any advice.

[vadimasg]

Answered:

The value that you provided for the object is being treated as a full URI and not as a compact URI.

You can fix this by declaring the namespace prefix mapping for the prefix cids and then using .Object("cids:Organization") to add the object part of the triple pattern. To set the namespace mapping, create a NamespaceMapper and add the prefix mapping to it. e.g.

var prefixes = new NamespaceMapper();
prefixes.AddNamespace("cids", new Uri("http://some.url/here/"));