internal Func <SparqlResult, dynamic> Lang(SparqlLiteralNode literal)
{
// if(literal is ILiteralNode)
return((result) => ((ILiteralNode)literal.Value).Language);
// if (text != null) return Expression.Constant(text.lang);
// throw new Exception("8");
}
public SparqlResultSet Run(PolarTripleStore store)
{
ResultSet.Store = store;
SparqlWhere.CreateNodes(store);
foreach (SparqlNode filterConstant in FilterConstants)
{
filterConstant.CreateNode(store);
}
SparqlWhere.Run(ResultSet);
switch (ResultSet.ResultType)
{
case ResultType.Describe:
ResultSet.GraphResult = store.CreateGraph();
var variablesIndexes = variables.Select(s => ResultSet.Variables[s].index).ToArray();
foreach (var result in ResultSet.Results)
{
foreach (var variableIndex in variablesIndexes)
{
foreach (var triple in store.GetTriplesWithSubject(result[variableIndex]))
{
ResultSet.GraphResult.Assert(triple);
}
foreach (var triple in store.GetTriplesWithObject(result[variableIndex]))
{
ResultSet.GraphResult.Assert(triple);
}
}
}
ResultSet.GraphResult.Build();
break;
case ResultType.Select:
foreach (var func in ListSolutionModifiersOrder)
{
ResultSet.Results = new List <SparqlResult>(func(ResultSet.Results));
}
if (!all)
{
ResultSet = new SparqlResultSet(ResultSet, variables);
}
ResultSet.DistinctReduse(isDistinct, isReduce);
foreach (var func in ListSolutionModifiersCount)
{
ResultSet.Results = new List <SparqlResult>(func(ResultSet.Results));
}
break;
case ResultType.Construct:
ResultSet.GraphResult = store.CreateGraph();
foreach (var result in ResultSet.Results)
{
Func <SparqlNode, INode> GetValueNode = node =>
{
if (node is VariableNode)
{
return(result[(node as VariableNode).index]);
}
SparqlUriNode uriNode = node as SparqlUriNode;
if (uriNode != null)
{
return(store.GetUriNode(uriNode.Uri) ??
ResultSet.GraphResult.CreateUriNode(uriNode.Uri));
}
SparqlLiteralNode literlNode = node as SparqlLiteralNode;
if (literlNode != null)
{
return(store.GetLiteralNode(literlNode.type.Uri, literlNode.Content, literlNode.lang) ??
(literlNode.lang != null
? ResultSet.GraphResult.CreateLiteralNode(literlNode.Content.ToString(),
literlNode.lang)
: ResultSet.GraphResult.CreateLiteralNode(literlNode.Content.ToString(),
literlNode.type.Uri)));
}
throw new NotImplementedException();
};
foreach (var sparqlTriplet in Construct.Triples.Cast <SparqlTriple>())
{
ResultSet.GraphResult.Assert(new Triple(GetValueNode(sparqlTriplet.Subj),
GetValueNode(sparqlTriplet.Pred),
GetValueNode(sparqlTriplet.Obj)));
}
}
ResultSet.GraphResult.Build();
break;
case ResultType.Ask:
break;
default:
throw new ArgumentOutOfRangeException();
}
return(ResultSet);
}
