static private IsList ( JToken v ) : bool | ||
v | JToken | the value to check. |
Résultat | bool |
internal static JArray GraphToRDF(JObject graph, UniqueNamer namer) { // use RDFDataset.graphToRDF JArray rval = new JArray(); foreach (string id in graph.GetKeys()) { JObject node = (JObject)graph[id]; JArray properties = new JArray(node.GetKeys()); properties.SortInPlace(); foreach (string property in properties) { var eachProperty = property; JToken items = node[eachProperty]; if ("@type".Equals(eachProperty)) { eachProperty = JSONLDConsts.RdfType; } else { if (JsonLdUtils.IsKeyword(eachProperty)) { continue; } } foreach (JToken item in (JArray)items) { // RDF subjects JObject subject = new JObject(); if (id.IndexOf("_:") == 0) { subject["type"] = "blank node"; subject["value"] = namer.GetName(id); } else { subject["type"] = "IRI"; subject["value"] = id; } // RDF predicates JObject predicate = new JObject(); predicate["type"] = "IRI"; predicate["value"] = eachProperty; // convert @list to triples if (JsonLdUtils.IsList(item)) { ListToRDF((JArray)((JObject)item)["@list"], namer, subject , predicate, rval); } else { // convert value or node object to triple object @object = ObjectToRDF(item, namer); IDictionary <string, object> tmp = new Dictionary <string, object>(); tmp["subject"] = subject; tmp["predicate"] = predicate; tmp["object"] = @object; rval.Add(tmp); } } } } return(rval); }
/// <summary>Creates an array of RDF triples for the given graph.</summary> /// <remarks>Creates an array of RDF triples for the given graph.</remarks> /// <param name="graph">the graph to create RDF triples for.</param> internal virtual void GraphToRDF(string graphName, JObject graph ) { // 4.2) IList <RDFDataset.Quad> triples = new List <RDFDataset.Quad>(); // 4.3) IEnumerable <string> subjects = graph.GetKeys(); // Collections.sort(subjects); foreach (string id in subjects) { if (JsonLdUtils.IsRelativeIri(id)) { continue; } JObject node = (JObject)graph[id]; JArray properties = new JArray(node.GetKeys()); properties.SortInPlace(); foreach (string property in properties) { var localProperty = property; JArray values; // 4.3.2.1) if ("@type".Equals(localProperty)) { values = (JArray)node["@type"]; localProperty = JSONLDConsts.RdfType; } else { // 4.3.2.2) if (JsonLdUtils.IsKeyword(localProperty)) { continue; } else { // 4.3.2.3) if (localProperty.StartsWith("_:") && !api.opts.GetProduceGeneralizedRdf()) { continue; } else { // 4.3.2.4) if (JsonLdUtils.IsRelativeIri(localProperty)) { continue; } else { values = (JArray)node[localProperty]; } } } } RDFDataset.Node subject; if (id.IndexOf("_:") == 0) { // NOTE: don't rename, just set it as a blank node subject = new RDFDataset.BlankNode(id); } else { subject = new RDFDataset.IRI(id); } // RDF predicates RDFDataset.Node predicate; if (localProperty.StartsWith("_:")) { predicate = new RDFDataset.BlankNode(localProperty); } else { predicate = new RDFDataset.IRI(localProperty); } foreach (JToken item in values) { // convert @list to triples if (JsonLdUtils.IsList(item)) { JArray list = (JArray)((JObject)item)["@list"]; RDFDataset.Node last = null; RDFDataset.Node firstBNode = nil; if (!list.IsEmpty()) { last = ObjectToRDF(list[list.Count - 1]); firstBNode = new RDFDataset.BlankNode(api.GenerateBlankNodeIdentifier()); } triples.Add(new RDFDataset.Quad(subject, predicate, firstBNode, graphName)); for (int i = 0; i < list.Count - 1; i++) { RDFDataset.Node @object = ObjectToRDF(list[i]); triples.Add(new RDFDataset.Quad(firstBNode, first, @object, graphName)); RDFDataset.Node restBNode = new RDFDataset.BlankNode(api.GenerateBlankNodeIdentifier ()); triples.Add(new RDFDataset.Quad(firstBNode, rest, restBNode, graphName)); firstBNode = restBNode; } if (last != null) { triples.Add(new RDFDataset.Quad(firstBNode, first, last, graphName)); triples.Add(new RDFDataset.Quad(firstBNode, rest, nil, graphName)); } } else { // convert value or node object to triple RDFDataset.Node @object = ObjectToRDF(item); if (@object != null) { triples.Add(new RDFDataset.Quad(subject, predicate, @object, graphName)); } } } } } this[graphName] = triples; }