private static object Execute(string name, Dictionary <string, string> values)
{
var endpoint = Resources.DB.Endpoints[name];
if (endpoint.Type == EndpointType.HardCoded)
{
return(FixedQueryController.ExecuteHardCoded(name, values));
}
else
{
return(FixedQueryController.ExecuteNamedSparql(name, values));
}
}
private static object Execute(string name, Dictionary <string, string> values)
{
var endpoint = Resources.GetApiPathItem(name);
var endpointType = Resources.GetEndpointType(endpoint);
if (endpointType == EndpointType.HardCoded)
{
return(FixedQueryController.ExecuteHardCoded(name, values));
}
else
{
return(FixedQueryController.ExecuteNamedSparql(name, values));
}
}
public static IGraph webarticle_by_id(Dictionary <string, string> values)
{
var webarticle_id = values["webarticle_id"];
var uri = new Uri(Global.InstanceUri, webarticle_id).AbsoluteUri;
var articleExists = FixedQueryController.ExecuteNamedSparql("exists", new Dictionary <string, string> {
{ "uri", uri }
}) as SparqlResultSet;
if (!articleExists.Result)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
try
{
return(Contentful.Engine.GetArticle(webarticle_id));
}
catch (Contentful.EntryNotFoundException)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
}
public static IGraph with_schema(Dictionary <string, string> values)
{
// Run the original query
var endpoint_name = values["endpoint_name"];
var originalGraph = FixedQueryController.ExecuteNamedSparql(endpoint_name, values) as IGraph;
// Collect types and predicates from the result of the original query
// and get ontology information about them.
var predicates = originalGraph.Triples.PredicateNodes;
var types = originalGraph.GetTriplesWithPredicate(new Uri(RdfSpecsHelper.RdfType)).Select(t => t.Object);
var ontologyResources = string.Join(" ", predicates.Union(types).Distinct().Cast <IUriNode>().Select(p => "<" + p.Uri.AbsoluteUri + ">"));
var ontologyQuery = @"
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
CONSTRUCT {
?ontology ?ontologyProperty ?ontologyValue .
?ontologyResource ?resourceProperty ?resourceValue .
}
FROM <http://www.ontotext.com/explicit>
WHERE {
VALUES ?ontologyResource {@ontologyResources}
?ontology ?ontologyProperty ?ontologyValue .
?ontologyResource
?resourceProperty ?resourceValue ;
rdfs:isDefinedBy ?ontology.
FILTER(?resourceProperty != owl:inverseOf)
}".Replace("@ontologyResources", ontologyResources);
var ontologyGraph = BaseController.ExecuteList(new SparqlParameterizedString(ontologyQuery)) as IGraph;
// Collect classes from across both the result of the original query and the ontology generated for it
// (could be types from the original, classes from the ontology or domains and ranges from the ontology)
// and see if any are sub-classes of any other
var domains = ontologyGraph.GetTriplesWithPredicate(ontologyGraph.CreateUriNode(new Uri(OntologyHelper.PropertyDomain))).Select(t => t.Object);
var ranges = ontologyGraph.GetTriplesWithPredicate(ontologyGraph.CreateUriNode(new Uri(OntologyHelper.PropertyRange))).Select(t => t.Object);
var classes = ontologyGraph.GetTriplesWithPredicateObject(ontologyGraph.CreateUriNode(new Uri(RdfSpecsHelper.RdfType)), ontologyGraph.CreateUriNode(new Uri(OntologyHelper.OwlClass))).Select(t => t.Subject);
var classResources = string.Join(" ", domains.Union(ranges).Union(classes).Union(types).Distinct().Cast <IUriNode>().Select(p => "<" + p.Uri.AbsoluteUri + ">"));
var subClassQuery = @"
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
CONSTRUCT {
?class rdfs:subClassOf ?superClass .
}
FROM <http://www.ontotext.com/explicit>
WHERE {
VALUES ?class {@classResources}
VALUES ?superClass {@classResources}
?class rdfs:subClassOf ?superClass .
}".Replace("@classResources", classResources);
var subClassGraph = BaseController.ExecuteList(new SparqlParameterizedString(subClassQuery)) as IGraph;
// The result is all three graphs above merged.
var resultGraph = new Graph();
resultGraph.Merge(originalGraph);
resultGraph.Merge(ontologyGraph);
resultGraph.Merge(subClassGraph);
return(resultGraph);
}
