public override void VisitOrdering(Remotion.Linq.Clauses.Ordering ordering, QueryModel queryModel, Remotion.Linq.Clauses.OrderByClause orderByClause, int index)
{
_isInstanceQuery = false;
var selector = SparqlGeneratorWhereExpressionTreeVisitor.GetSparqlExpression(ordering.Expression,
_queryBuilder);
if (selector is SelectVariableNameExpression)
{
var selectorVar = selector as SelectVariableNameExpression;
_queryBuilder.AddOrdering(new SparqlOrdering("?" + selectorVar.Name, ordering.OrderingDirection));
}
else
{
throw new NotSupportedException(
String.Format("LINQ-to-SPARQL does not currently support ordering by the expression '{0}'", ordering.Expression));
}
base.VisitOrdering(ordering, queryModel, orderByClause, index);
}