public IEnumerable <IDataObject> BindDataObjects(SparqlResultSet sparqlResultSet, bool resultsAreOrdered = false)
{
if (sparqlResultSet == null)
{
throw new ArgumentNullException(nameof(sparqlResultSet));
}
var resourceTriples = new Dictionary <string, List <Triple> >();
string lastLoadedSubject = null;
switch (sparqlResultSet.Variables.Count())
{
case 1:
// Single column results set contains only data object IRIs
foreach (var uriNode in sparqlResultSet.Select(row => row[0] as IUriNode).Where(uriNode => uriNode?.Uri != null))
{
yield return(_storeContext.MakeDataObject(uriNode.Uri.ToString()));
}
break;
case 3:
// Columns are triples, s, p, o in that order
foreach (var t in sparqlResultSet.Select(row => MakeTriple(row[0], row[1], row[2])))
{
if (resourceTriples.ContainsKey(t.Subject))
{
resourceTriples[t.Subject].Add(t);
}
else
{
resourceTriples[t.Subject] = new List <Triple> {
t
};
}
if (resultsAreOrdered && lastLoadedSubject != null && !lastLoadedSubject.Equals(t.Subject))
{
// Have collected all the triples we are going to see for the previously encountered subject, so emit its data object now
yield return(MakeDataObject(lastLoadedSubject, resourceTriples[lastLoadedSubject]));
}
lastLoadedSubject = t.Subject;
}
if (resultsAreOrdered && lastLoadedSubject != null)
{
// Emit the final result
yield return(MakeDataObject(lastLoadedSubject, resourceTriples[lastLoadedSubject]));
}
else
{
// We have batched up all of the triples and can now emit the separate data objects
foreach (var entry in resourceTriples)
{
yield return(MakeDataObject(entry.Key, entry.Value));
}
}
break;
default:
throw new ArgumentException(
$"Expected a result set with either 1 or 3 columns. Got a result set with {sparqlResultSet.Variables.Count()} columns", nameof(sparqlResultSet));
}
}
public IList <string> GetInstantiableEntityTypes(string firstEntityType)
{
if (!firstEntityType.IsValidBaseUri())
{
throw new InvalidFormatException(Constants.Messages.Identifier.IncorrectIdentifierFormat, firstEntityType);
}
SparqlParameterizedString queryString = new SparqlParameterizedString
{
CommandText =
@"SELECT DISTINCT *
@fromMetadataNamedGraph
@fromEnterpriseCoreOntologyNamedGraph
WHERE {
?class rdfs:subClassOf* @firstEntityType .
?class @dashAbstract false.
} ORDER BY ?class"
};
queryString.SetPlainLiteral("fromMetadataNamedGraph", _metadataGraphConfigurationRepository.GetGraphs(Constants.MetadataGraphConfiguration.HasMetadataGraph).JoinAsFromNamedGraphs());
queryString.SetPlainLiteral("fromEnterpriseCoreOntologyNamedGraph", _metadataGraphConfigurationRepository.GetGraphs(Constants.MetadataGraphConfiguration.HasECOGraph).JoinAsFromNamedGraphs());
queryString.SetUri("firstEntityType", new Uri(firstEntityType));
queryString.SetUri("dashAbstract", new Uri(Constants.DASH.Abstract));
SparqlResultSet results = _tripleStoreRepository.QueryTripleStoreResultSet(queryString);
var types = results
.Select(r => r.GetNodeValuesFromSparqlResult("class")?.Value)
.Where(r => !string.IsNullOrWhiteSpace(r))
.ToList();
return(types);
}
public IEnumerable <Provenance> Get(string title)
{
using (StardogConnector dog = new StardogConnector(StarDogUrl, DbName, "admin", "admin"))
{
SparqlResultSet provResults = dog.Query(
"SELECT distinct ?provenanceLabel ?location ?dateAcquired ?ownerLabel ?dispayOrder WHERE {" +
"?artwork a dbo:Artwork ." +
"?artwork rdfs:label ?label . " +
"?artwork :provenance ?provenance ." +
"?provenance :dateAcquired ?dateAcquired ." +
"?provenance rdfs:label ?provenanceLabel ." +
"?provenance schema:location ?city ." +
"?city rdfs:label ?location ." +
"?provenance gvp:displayOrder ?dispayOrder." +
"?provenance gvp:ulan2779_owned_by ?owner. " +
"?owner rdfs:label ?ownerLabel. " +
"FILTER regex(str(?label), \"" + title + "\") ." +
"FILTER(LANG(?ownerLabel) = \"\" || LANGMATCHES(LANG(?ownerLabel), \"en\")) ." +
"FILTER(lang(?location) = \"en\")} " +
"ORDER BY ASC(xsd:integer(?dispayOrder))") as SparqlResultSet;
var provenance = provResults?
.Select(x => new Provenance(x))
.GroupBy(x => x.DispayOrder, (key, g) => g.OrderBy(e => e.DispayOrder).First());
return(provenance);
}
}
public IList <string> GetParentEntityTypes(string firstEntityType)
{
if (!firstEntityType.IsValidBaseUri())
{
throw new InvalidFormatException(Constants.Messages.Identifier.IncorrectIdentifierFormat, firstEntityType);
}
SparqlParameterizedString queryString = new SparqlParameterizedString();
queryString.CommandText =
@"SELECT *
@fromMetadataNamedGraph
@fromMetdataShaclNamedGraph
@fromEnterpriseCoreOntologyNamedGraph
WHERE {
@value rdfs:subClassOf* ?type.
}";
queryString.SetPlainLiteral("fromMetadataNamedGraph", _metadataGraphConfigurationRepository.GetGraphs(Constants.MetadataGraphConfiguration.HasMetadataGraph).JoinAsFromNamedGraphs());
queryString.SetPlainLiteral("fromMetdataShaclNamedGraph", _metadataGraphConfigurationRepository.GetGraphs(Constants.MetadataGraphConfiguration.HasShaclConstraintsGraph).JoinAsFromNamedGraphs());
queryString.SetPlainLiteral("fromEnterpriseCoreOntologyNamedGraph", _metadataGraphConfigurationRepository.GetGraphs(Constants.MetadataGraphConfiguration.HasECOGraph).JoinAsFromNamedGraphs());
queryString.SetUri("value", new Uri(firstEntityType));
SparqlResultSet results = _tripleStoreRepository.QueryTripleStoreResultSet(queryString);
if (results.IsEmpty)
{
return(null);
}
var resourceTypes = results.Select(result => result.GetNodeValuesFromSparqlResult("type").Value).ToList();
return(resourceTypes);
}
private void GenerateCaptionedInformation(HtmlWriterContext context, String caption, SparqlResultSet results, String var)
{
if (results == null)
{
return;
}
this.GenerateCaptionedInformation(context, caption, results.Select(r => r[var]).Where(n => n != null));
}
public PartialViewResult _Index(QueryOntology queryOntology)
{
IGraph g = new Graph();
StreamReader file = new StreamReader("Config.json");
JsonSerializer serializer = new JsonSerializer();
var configurations = JsonConvert.DeserializeObject <Configuration>(file.ReadToEnd());
if (queryOntology.Ontology == 1)
{
g.LoadFromFile(configurations.InstagramPath);
}
else
{
g.LoadFromFile(configurations.MyHeritagePath);
}
try
{
Object results = g.ExecuteQuery(queryOntology.Query);
//Object results = g.ExecuteQuery( "SELECT DISTINCT ?Concept WHERE {[] a ?Concept}");
if (results is SparqlResultSet)
{
SparqlResultSet rset = (SparqlResultSet)results;
var result = rset.Select(s => new ResultQueryList
{
Object = s.ToString(),
Predicate = s.ToString(),
Subject = s.ToString()
});
return(PartialView(result));
}
else if (results is IGraph)
{
IGraph resGraph = (IGraph)results;
var result = resGraph.Triples.Select(s => new ResultQueryList
{
Object = s.Object.ToString(),
Predicate = s.Predicate.ToString(),
Subject = s.Subject.ToString()
});
return(PartialView(result));
}
else
{
Console.WriteLine("ERROR");
}
}
catch (RdfQueryException queryEx)
{
Console.WriteLine(queryEx.Message);
}
return(PartialView());
}
public ActionResult GraphML(int id)
{
List <RouteItem> routes = getAllRoutes(id);
// Using Parliament nuget packages, map user-defined classes into ontology-aligned interfaces which all implement iResource interface
// This allows us to work with IGraph objects
IEnumerable <ProcedureRoute> IRoutes = routes.Select(r => r.GiveMeMappedObject());
RdfSerializer serializer = new RdfSerializer();
IGraph graph = serializer.Serialize(IRoutes, typeof(ProcedureRoute).Assembly.GetTypes());
SparqlQueryParser parser = new SparqlQueryParser();
// Nodes
SparqlQuery q1 = parser.ParseFromString("PREFIX : <https://id.parliament.uk/schema/> SELECT ?step ?stepName WHERE {?step a :ProcedureStep; :procedureStepName ?stepName. }");
SparqlResultSet nodes = (SparqlResultSet)graph.ExecuteQuery(q1);
// Edges
SparqlQuery q2 = parser.ParseFromString("PREFIX : <https://id.parliament.uk/schema/> SELECT ?route ?fromStep ?toStep WHERE {?route a :ProcedureRoute; :procedureRouteIsFromProcedureStep ?fromStep; :procedureRouteIsToProcedureStep ?toStep.}");
SparqlResultSet edges = (SparqlResultSet)graph.ExecuteQuery(q2);
// Create GraphML
StringWriter sw = new Utf8StringWriter();
XmlWriterSettings xws = new XmlWriterSettings();
xws.OmitXmlDeclaration = false;
xws.Indent = true;
using (XmlWriter xw = XmlWriter.Create(sw, xws))
{
XNamespace ns = "http://graphml.graphdrawing.org/xmlns";
XNamespace xsi = "http://www.w3.org/2001/XMLSchema-instance";
XNamespace xsiSchemaLocation = "http://graphml.graphdrawing.org/xmlns http://www.yworks.com/xml/schema/graphml/1.1/ygraphml.xsd";
// For yEd, not essential to GraphML. But good for verification
XNamespace y = "http://www.yworks.com/xml/graphml";
XDocument doc = new XDocument(
new XDeclaration("1.0", "UTF-8", "yes"),
new XElement(ns + "graphml",
new XAttribute(XNamespace.Xmlns + "xsi", xsi),
new XAttribute(xsi + "schemaLocation", xsiSchemaLocation),
new XAttribute(XNamespace.Xmlns + "y", y),
new XElement(ns + "key", new XAttribute("for", "node"), new XAttribute("id", "d0"), new XAttribute("yfiles.type", "nodegraphics")),
new XElement(ns + "graph", new XAttribute("id", "G"), new XAttribute("edgedefault", "directed"),
nodes.Select(n => new XElement(ns + "node", new XAttribute("id", n["step"]), new XElement(ns + "data", new XAttribute("name", n["stepName"]), new XAttribute("key", "d0"), new XElement(y + "ShapeNode", new XElement(y + "NodeLabel", new XAttribute("visible", "true"), new XAttribute("autoSizePolicy", "content"), new XText(n["stepName"].ToString())))))),
edges.Select(e => new XElement(ns + "edge", new XAttribute("id", e["route"]), new XAttribute("source", e["fromStep"]), new XAttribute("target", e["toStep"])))
)));
doc.WriteTo(xw);
}
return(Content(sw.ToString(), "application/xml"));
}
// GET api/<controller>
public IEnumerable <Artist> Get()
{
using (StardogConnector dog = new StardogConnector(StarDogUrl, DbName, "admin", "admin"))
{
SparqlResultSet artistsResults = dog.Query(
"SELECT distinct ?label ?abstract WHERE {" +
"?person rdf:type dbo:Artist ." +
"?person rdfs:label ?label . " +
"?person dbo:abstract ?abstract ." +
"FILTER(lang(?abstract) = 'en') ." +
"FILTER(lang(?label) = \"en\") }") as SparqlResultSet;
var artists = artistsResults?.Select(x => new Artist(x));
return(artists);
}
}
public JsonResult _ExecuteSPARQL(QueryOntology queryOntology)
{
IGraph g = new Graph();
StreamReader file = new StreamReader("Config.json");
JsonSerializer serializer = new JsonSerializer();
var configurations = JsonConvert.DeserializeObject <Configuration>(file.ReadToEnd());
if (queryOntology.Ontology == 1)
{
g.LoadFromFile(configurations.InstagramPath);
}
else
{
g.LoadFromFile(configurations.MyHeritagePath);
}
try
{
Object results = g.ExecuteQuery(queryOntology.Query);
if (results is SparqlResultSet)
{
SparqlResultSet rset = (SparqlResultSet)results;
var result = rset.Select(s => new ResultQueryList
{
Object = s.ToString(),
Predicate = s.ToString(),
Subject = s.ToString()
});
return(Json(JsonConvert.SerializeObject(rset)));
}
else if (results is IGraph)
{
IGraph resGraph = (IGraph)results;
return(Json(resGraph.Triples));
}
else
{
return(Json(false));
}
}
catch (RdfQueryException queryEx)
{
return(Json(queryEx));
}
}
// GET api/<controller>?artist="any"
public IEnumerable <Artwork> Get(string artist)
{
using (StardogConnector dog = new StardogConnector(StarDogUrl, DbName, "admin", "admin"))
{
SparqlResultSet artworkResults = dog.Query(
"SELECT distinct ?label ?depiction ?abstract WHERE {" +
"?artwork a dbo:Artwork ." +
"?artwork rdfs:label ?label . " +
"?artwork dbo:abstract ?abstract ." +
"?artwork foaf:depiction ?depiction ." +
"?artwork dbo:author ?author ." +
"?author foaf:name ?authorLabel ." +
"FILTER regex(str(?authorLabel), \"" + artist + "\")" +
"FILTER(lang(?label) = \"en\") ." +
"FILTER(lang(?abstract) = \"en\")}") as SparqlResultSet;
var artworks = artworkResults?.Select(x => new Artwork(x));
return(artworks);
}
}
// GET api/<controller>/?artistName="any"
public IEnumerable <Artwork> Get(string artistName)
{
using (StardogConnector dog = new StardogConnector(StarDogUrl, DbName, "admin", "admin"))
{
SparqlResultSet artworksResults = dog.Query(
"SELECT distinct ?label ?abstract?depiction ?labelArtwork WHERE {" +
"?person rdf:type dbo:Artist ." +
"?person rdfs:label ?label ." +
"?artwork a dbo:Artwork ." +
"?artwork foaf:depiction ?depiction ." +
"?person dbo:abstract ?abstract ." +
"?artwork dbo:author ?person ." +
"?artwork rdfs:label ?labelArtwork . " +
" FILTER(lang(?abstract) = 'en') ." +
"FILTER(lang(?label) = 'en') ." +
"FILTER regex(str(?labelArtwork), \"" + artistName + "\")" +
"FILTER(lang(?labelArtwork) = 'en') }")
as SparqlResultSet;
var artworks = artworksResults?.Select(x => new Artwork(x));
return(artworks);
}
}
public static IEnumerable <string> GetIds(this SparqlResultSet results)
{
return(results?.Select(x => x[0].GetUri().GetUriIdentifier()));
}
private void GenerateCaptionedInformation(HtmlWriterContext context, String caption, SparqlResultSet results, String var)
{
if (results == null) return;
this.GenerateCaptionedInformation(context, caption, results.Select(r => r[var]).Where(n => n != null));
}
public IEnumerable<IDataObject> BindDataObjects(SparqlResultSet sparqlResultSet, bool resultsAreOrdered = false)
{
if (sparqlResultSet == null) throw new ArgumentNullException(nameof(sparqlResultSet));
var resourceTriples = new Dictionary<string, List<Triple>>();
string lastLoadedSubject = null;
switch (sparqlResultSet.Variables.Count())
{
case 1:
// Single column results set contains only data object IRIs
foreach (var uriNode in sparqlResultSet.Select(row => row[0] as IUriNode).Where(uriNode => uriNode?.Uri != null))
{
yield return _storeContext.MakeDataObject(uriNode.Uri.ToString());
}
break;
case 3:
// Columns are triples, s, p, o in that order
foreach (var t in sparqlResultSet.Select(row=>MakeTriple(row[0], row[1], row[2])))
{
if (resourceTriples.ContainsKey(t.Subject))
{
resourceTriples[t.Subject].Add(t);
}
else
{
resourceTriples[t.Subject] = new List<Triple> {t};
}
if (resultsAreOrdered && lastLoadedSubject != null && !lastLoadedSubject.Equals(t.Subject))
{
// Have collected all the triples we are going to see for the previously encountered subject, so emit its data object now
yield return MakeDataObject(lastLoadedSubject, resourceTriples[lastLoadedSubject]);
}
lastLoadedSubject = t.Subject;
}
if (resultsAreOrdered && lastLoadedSubject != null)
{
// Emit the final result
yield return MakeDataObject(lastLoadedSubject, resourceTriples[lastLoadedSubject]);
}
else
{
// We have batched up all of the triples and can now emit the separate data objects
foreach (var entry in resourceTriples)
{
yield return MakeDataObject(entry.Key, entry.Value);
}
}
break;
default:
throw new ArgumentException(
$"Expected a result set with either 1 or 3 columns. Got a result set with {sparqlResultSet.Variables.Count()} columns", nameof(sparqlResultSet));
}
}
