public void TestIsOrdered()
{
SparqlQuery query = new SparqlQuery(@"
SELECT ?s0 ?p0 ?o0
WHERE
{
?s0 ?p0 ?o0 .
{
SELECT DISTINCT ?s0
WHERE
{
?s ?p ?o .
?s @type @class .
{
?s ?p1 ?o1 .
FILTER ISLITERAL(?o1) . FILTER REGEX(STR(?o1), '', 'i') .
}
UNION
{
?s ?p1 ?s1 .
?s1 ?p2 ?o2 .
FILTER ISLITERAL(?o2) . FILTER REGEX(STR(?o2), '', 'i') .
}
}
ORDER BY ?o
}
}
");
query.Bind("@type", rdf.type);
query.Bind("@class", tmo.Task);
Assert.IsTrue(string.IsNullOrEmpty(query.GetRootOrderByClause()));
query = new SparqlQuery(@"
SELECT ?s0 ?p0 ?o0
WHERE
{
?s0 ?p0 ?o0 .
{
SELECT DISTINCT ?s0
WHERE
{
?s ?p ?o .
?s @type @class .
{
?s ?p1 ?o1 .
FILTER ISLITERAL(?o1) . FILTER REGEX(STR(?o1), '', 'i') .
}
UNION
{
?s ?p1 ?s1 .
?s1 ?p2 ?o2 .
FILTER ISLITERAL(?o2) . FILTER REGEX(STR(?o2), '', 'i') .
}
}
}
}
");
query.Bind("@type", rdf.type);
query.Bind("@class", tmo.Task);
Assert.IsTrue(string.IsNullOrEmpty(query.GetRootOrderByClause()));
query = new SparqlQuery(@"
SELECT DISTINCT ?s0 FROM <http://semiodesk.com/id/8083cf10-5f90-40d4-b30a-c18fea31177b/>
WHERE
{
?s0 ?p0 ?o0 .
?s0 a <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#Visual> .
?s0 <http://www.semanticdesktop.org/ontologies/2007/05/10/nexif#dateTime> ?o1 .
}
ORDER BY ASC(?o1) LIMIT 50
");
Assert.IsFalse(string.IsNullOrEmpty(query.GetRootOrderByClause()));
}