本文整理汇总了C#中IGraph.CreateBlankNode方法的典型用法代码示例。如果您正苦于以下问题：C# IGraph.CreateBlankNode方法的具体用法？C# IGraph.CreateBlankNode怎么用？C# IGraph.CreateBlankNode使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IGraph的用法示例。
在下文中一共展示了IGraph.CreateBlankNode方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CreateTriple
private Triple CreateTriple(IToken s, IToken p, IToken o, IGraph g)
{
INode subj, pred, obj;
switch (s.TokenType)
{
case Token.BLANKNODEWITHID:
subj = g.CreateBlankNode(s.Value.Substring(2));
break;
case Token.URI:
subj = g.CreateUriNode(new Uri(s.Value));
break;
default:
throw Error("Unexpected Token '" + s.GetType().ToString() + "' encountered, expected a Blank Node/URI as the Subject of a Triple", s);
}
switch (p.TokenType)
{
case Token.URI:
pred = g.CreateUriNode(new Uri(p.Value));
break;
default:
throw Error("Unexpected Token '" + p.GetType().ToString() + "' encountered, expected a URI as the Predicate of a Triple", p);
}
switch (o.TokenType)
{
case Token.BLANKNODEWITHID:
obj = g.CreateBlankNode(o.Value.Substring(2));
break;
case Token.LITERAL:
obj = g.CreateLiteralNode(o.Value);
break;
case Token.LITERALWITHDT:
String dtUri = ((LiteralWithDataTypeToken)o).DataType;
obj = g.CreateLiteralNode(o.Value, new Uri(dtUri.Substring(1, dtUri.Length - 2)));
break;
case Token.LITERALWITHLANG:
obj = g.CreateLiteralNode(o.Value, ((LiteralWithLanguageSpecifierToken)o).Language);
break;
case Token.URI:
obj = g.CreateUriNode(new Uri(o.Value));
break;
default:
throw Error("Unexpected Token '" + o.GetType().ToString() + "' encountered, expected a Blank Node/Literal/URI as the Object of a Triple", o);
}
return new Triple(subj, pred, obj, g);
}示例2: RewriteDescribeBNodes
//OPT: Replace with usage of MapTriple instead?
/// <summary>
/// Helper method which rewrites Blank Node IDs for Describe Queries
/// </summary>
/// <param name="t">Triple</param>
/// <param name="mapping">Mapping of IDs to new Blank Nodes</param>
/// <param name="g">Graph of the Description</param>
/// <returns></returns>
protected Triple RewriteDescribeBNodes(Triple t, Dictionary<String, INode> mapping, IGraph g)
{
INode s, p, o;
String id;
if (t.Subject.NodeType == NodeType.Blank)
{
id = t.Subject.GetHashCode() + "-" + t.Graph.GetHashCode();
if (mapping.ContainsKey(id))
{
s = mapping[id];
}
else
{
s = g.CreateBlankNode(id);
mapping.Add(id, s);
}
}
else
{
s = Tools.CopyNode(t.Subject, g);
}
if (t.Predicate.NodeType == NodeType.Blank)
{
id = t.Predicate.GetHashCode() + "-" + t.Graph.GetHashCode();
if (mapping.ContainsKey(id))
{
p = mapping[id];
}
else
{
p = g.CreateBlankNode(id);
mapping.Add(id, p);
}
}
else
{
p = Tools.CopyNode(t.Predicate, g);
}
if (t.Object.NodeType == NodeType.Blank)
{
id = t.Object.GetHashCode() + "-" + t.Graph.GetHashCode();
if (mapping.ContainsKey(id))
{
o = mapping[id];
}
else
{
o = g.CreateBlankNode(id);
mapping.Add(id, o);
}
}
else
{
o = Tools.CopyNode(t.Object, g);
}
return new Triple(s, p, o);
}示例3: MapGenidToBlank
private static INode MapGenidToBlank(INode node, IGraph g)
{
if (node is UriNode)
{
var u = node as UriNode;
if (u.Uri.ToString().StartsWith(Constants.GeneratedUriPrefix))
{
return g.CreateBlankNode(u.Uri.ToString().Substring(Constants.GeneratedUriPrefix.Length));
}
}
return node;
}示例4: LoadNode
/// <summary>
/// Loads a Node from the Database into the relevant Graph
/// </summary>
/// <param name="g">Graph to load into</param>
/// <param name="nodeID">Database Node ID</param>
public override INode LoadNode(IGraph g, string nodeID)
{
if (this._nodes.ContainsKey(nodeID))
{
//Known in our Map already
INode temp;
try
{
Monitor.Enter(this._nodes);
temp = this._nodes[nodeID];
}
finally
{
Monitor.Exit(this._nodes);
}
if (temp.Graph == g)
{
//Graph matches so just return
return temp;
}
else
{
//Need to copy into the Graph
return Tools.CopyNode(temp, g);
}
}
else
{
//Retrieve from the Database
String getID = "SELECT * FROM NODES WHERE nodeID=" + nodeID;
DataTable data = this.ExecuteQuery(getID);
if (data.Rows.Count == 0)
{
this.Close(true, true);
throw new RdfStorageException("Unable to load a required Node Record from the Database, Node ID '" + nodeID + "' is missing");
}
else
{
DataRow r = data.Rows[0];
int type;
String value;
INode n;
type = Int32.Parse(r["nodeType"].ToString());
value = r["nodeValue"].ToString().Normalize();
//Parse the Node Value based on the Node Type
switch ((NodeType)type)
{
case NodeType.Blank:
//Ignore the first two characters which will be _:
value = value.Substring(2);
n = g.CreateBlankNode(value);
break;
case NodeType.Literal:
//Extract Data Type or Language Specifier as appropriate
String lit, typeorlang;
if (value.Contains("^^"))
{
lit = value.Substring(0, value.LastIndexOf("^^"));
typeorlang = value.Substring(value.LastIndexOf("^^") + 2);
n = g.CreateLiteralNode(lit, new Uri(typeorlang));
}
else if (_validLangSpecifier.IsMatch(value))
{
lit = value.Substring(0, value.LastIndexOf("@"));
typeorlang = value.Substring(value.LastIndexOf("@") + 1);
n = g.CreateLiteralNode(lit, typeorlang);
}
else
{
n = g.CreateLiteralNode(value);
}
INode orig = n;
//Check the Hash Code
int expectedHash = Int32.Parse(r["nodeHash"].ToString());
if (expectedHash != n.GetHashCode())
{
//We've wrongly decoded the info?
ILiteralNode ln = (ILiteralNode)n;
if (!ln.Language.Equals(String.Empty))
{
//Wrongly attached a Language Specifier?
n = g.CreateLiteralNode(value);
if (expectedHash != n.GetHashCode())
{
n = orig;
//throw new RdfStorageException("Unable to decode a Stored Node into a Literal Node correctly");
}
}
else if (ln.DataType != null)
//.........这里部分代码省略.........
示例5: LoadNode
/// <summary>
/// Decodes an Object into an appropriate Node
/// </summary>
/// <param name="g">Graph to create the Node in</param>
/// <param name="n">Object to convert</param>
/// <returns></returns>
private INode LoadNode(IGraph g, Object n)
{
INode temp;
if (n is SqlExtendedString)
{
SqlExtendedString iri = (SqlExtendedString)n;
if (iri.IriType == SqlExtendedStringType.BNODE)
{
//Blank Node
temp = g.CreateBlankNode(n.ToString().Substring(9));
}
else if (iri.IriType != iri.StrType)
{
//Literal
temp = g.CreateLiteralNode(n.ToString());
}
else if (iri.IriType == SqlExtendedStringType.IRI)
{
//Uri
Uri u = new Uri(n.ToString(), UriKind.RelativeOrAbsolute);
if (!u.IsAbsoluteUri)
{
u = new Uri(Tools.ResolveUri(u, g.BaseUri));
}
temp = g.CreateUriNode(u);
}
else
{
//Assume a Literal
temp = g.CreateLiteralNode(n.ToString());
}
}
else if (n is SqlRdfBox)
{
SqlRdfBox lit = (SqlRdfBox)n;
if (lit.StrLang != null)
{
//Language Specified Literal
temp = g.CreateLiteralNode(n.ToString(), lit.StrLang);
}
else if (lit.StrType != null)
{
//Data Typed Literal
temp = g.CreateLiteralNode(n.ToString(), new Uri(lit.StrType));
}
else
{
//Literal
temp = g.CreateLiteralNode(n.ToString());
}
}
else if (n is String)
{
String s = n.ToString();
if (s.StartsWith("nodeID://"))
{
//Blank Node
temp = g.CreateBlankNode(s.Substring(9));
}
else
{
//Literal
temp = g.CreateLiteralNode(s);
}
}
else if (n is Int32)
{
temp = ((Int32)n).ToLiteral(g);
}
else if (n is Int16)
{
temp = ((Int16)n).ToLiteral(g);
}
else if (n is Single)
{
temp = ((Single)n).ToLiteral(g);
}
else if (n is Double)
{
temp = ((Double)n).ToLiteral(g);
}
else if (n is Decimal)
{
temp = ((Decimal)n).ToLiteral(g);
}
else if (n is DateTime)
{
temp = ((DateTime)n).ToLiteral(g);
}
else if (n is TimeSpan)
{
temp = ((TimeSpan)n).ToLiteral(g);
}
//.........这里部分代码省略.........
示例6: Load
public static void Load(IGraph output, JObject flattened)
{
JObject context = (JObject)flattened["@context"];
IDictionary<string, string> types = new Dictionary<string, string>();
foreach (JProperty term in context.Properties())
{
if (term.Value.Type == JTokenType.Object)
{
types.Add(term.Name, (((JObject)term.Value)["@type"]).ToString());
}
else
{
output.NamespaceMap.AddNamespace(term.Name, new Uri(term.Value.ToString()));
}
}
JArray graph = (JArray)flattened["@graph"];
foreach (JObject item in graph)
{
string id = item["@id"].ToString();
INode s = id.StartsWith("_:")
?
(INode)output.CreateBlankNode(id.Substring(2)) : (INode)output.CreateUriNode(new Uri(id));
foreach (JProperty prop in ((JObject)item).Properties())
{
if (prop.Name == "@id")
{
continue;
}
if (prop.Name == "@type")
{
INode p = output.CreateUriNode(new Uri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"));
if (prop.Value.Type == JTokenType.Array)
{
foreach (JToken type in (JArray)prop.Value)
{
INode o = output.CreateUriNode(type.ToString());
output.Assert(s, p, o);
}
}
else
{
INode o = output.CreateUriNode(prop.Value.ToString());
output.Assert(s, p, o);
}
}
else
{
INode p = output.CreateUriNode(prop.Name);
if (prop.Value.Type == JTokenType.Object)
{
string pid = ((JObject)prop.Value)["@id"].ToString();
INode o = pid.StartsWith("_:")
?
(INode)output.CreateBlankNode(pid.Substring(2)) : (INode)output.CreateUriNode(new Uri(pid));
output.Assert(s, p, o);
}
else
{
string type = "string";
types.TryGetValue(prop.Name, out type);
INode o;
if (type == "@id")
{
string pv = prop.Value.ToString();
o = pv.StartsWith("http:") ? output.CreateUriNode(new Uri(pv)) : output.CreateUriNode(pv);
}
else
{
o = output.CreateLiteralNode(prop.Value.ToString());
}
output.Assert(s, p, o);
}
}
}
}
}示例7: thingOneOf
public static void thingOneOf(IGraph graph, IUriNode[] listInds)
{
IBlankNode oneOfNode = graph.CreateBlankNode();
IBlankNode chainA = graph.CreateBlankNode();
IUriNode rdfType = graph.CreateUriNode(new Uri(RdfSpecsHelper.RdfType));
IUriNode rdfFirst = graph.CreateUriNode(new Uri(RdfSpecsHelper.RdfListFirst));
IUriNode rdfRest = graph.CreateUriNode(new Uri(RdfSpecsHelper.RdfListRest));
IUriNode rdfNil = graph.CreateUriNode(new Uri(RdfSpecsHelper.RdfListNil));
IUriNode owlClass = graph.CreateUriNode(new Uri(NamespaceMapper.OWL + "Class"));
IUriNode owlOneOf = graph.CreateUriNode(new Uri(NamespaceMapper.OWL + "oneOf"));
IUriNode owlThing = graph.CreateUriNode(new Uri(NamespaceMapper.OWL + "Thing"));
IUriNode owlEquivClass = graph.CreateUriNode(new Uri(NamespaceMapper.OWL + "equivalentClass"));
graph.Assert(new Triple(oneOfNode, rdfType, owlClass));
graph.Assert(new Triple(oneOfNode, owlOneOf, chainA));
graph.Assert(new Triple(owlThing, owlEquivClass, oneOfNode));
for (int i = 0; i < listInds.Length; i++)
{
graph.Assert(new Triple(chainA, rdfFirst, listInds[i]));
IBlankNode chainB = graph.CreateBlankNode();
if (i < listInds.Length - 1)
{
graph.Assert(new Triple(chainA, rdfRest, chainB));
chainA = chainB;
}
}
graph.Assert(new Triple(chainA, rdfRest, rdfNil));
}