public void ReadGraph(IRdfGraph graph)
{
IRdfEdgeCollection edges = graph.Edges;
for (int index = 0; index < edges.Count; ++index)
{
IRdfEdge edge = edges[index];
OnNewStatement(ParseEdge(edge));
}
}
public Statement ParseEdge(IRdfEdge edge)
{
// Nasty hack follows
UriRef thePredicate = itsResourceFactory.MakeUriRef(edge.ID);
NodeType subjectNodeType;
NodeType objectNodeType;
if (edge.ParentNode.ID.StartsWith("blankID:"))
{
subjectNodeType = NodeType.BLANK_NODE;
}
else
{
subjectNodeType = NodeType.URIREF;
}
if (edge.ChildNode is IRdfLiteral)
{
if (((IRdfLiteral)edge.ChildNode).Datatype == "")
{
objectNodeType = NodeType.PLAIN_LITERAL;
}
else
{
objectNodeType = NodeType.TYPED_LITERAL;
}
}
else if (edge.ChildNode.ID.StartsWith("blankID:"))
{
objectNodeType = NodeType.BLANK_NODE;
}
else
{
objectNodeType = NodeType.URIREF;
}
if (subjectNodeType == NodeType.BLANK_NODE)
{
BlankNode theSubject = itsResourceFactory.MakeBlankNode("drive" + edge.ParentNode.ID.Substring(8));
if (objectNodeType == NodeType.BLANK_NODE)
{
BlankNode theObject = itsResourceFactory.MakeBlankNode("drive" + edge.ChildNode.ID.Substring(8));
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
else if (objectNodeType == NodeType.URIREF)
{
UriRef theObject = itsResourceFactory.MakeUriRef(edge.ChildNode.ID);
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
else if (objectNodeType == NodeType.PLAIN_LITERAL)
{
PlainLiteral theObject;
if (((IRdfLiteral)edge.ChildNode).LangID == null)
{
theObject = itsResourceFactory.MakePlainLiteral(((IRdfLiteral)edge.ChildNode).Value);
}
else
{
theObject = itsResourceFactory.MakePlainLiteral(((IRdfLiteral)edge.ChildNode).Value, ((IRdfLiteral)edge.ChildNode).LangID);
}
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
else if (objectNodeType == NodeType.TYPED_LITERAL)
{
TypedLiteral theObject = itsResourceFactory.MakeTypedLiteral(((IRdfLiteral)edge.ChildNode).Value, ((IRdfLiteral)edge.ChildNode).Datatype);
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
}
else
{
UriRef theSubject = itsResourceFactory.MakeUriRef(edge.ParentNode.ID);
if (objectNodeType == NodeType.BLANK_NODE)
{
BlankNode theObject = itsResourceFactory.MakeBlankNode("drive" + edge.ChildNode.ID.Substring(8));
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
else if (objectNodeType == NodeType.URIREF)
{
UriRef theObject = itsResourceFactory.MakeUriRef(edge.ChildNode.ID);
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
else if (objectNodeType == NodeType.PLAIN_LITERAL)
{
PlainLiteral theObject;
if (((IRdfLiteral)edge.ChildNode).LangID == null)
{
theObject = itsResourceFactory.MakePlainLiteral(((IRdfLiteral)edge.ChildNode).Value);
}
else
{
theObject = itsResourceFactory.MakePlainLiteral(((IRdfLiteral)edge.ChildNode).Value, ((IRdfLiteral)edge.ChildNode).LangID);
}
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
else if (objectNodeType == NodeType.TYPED_LITERAL)
{
TypedLiteral theObject = itsResourceFactory.MakeTypedLiteral(((IRdfLiteral)edge.ChildNode).Value, ((IRdfLiteral)edge.ChildNode).Datatype);
return(itsStatementFactory.MakeStatement(theSubject, thePredicate, theObject));
}
}
return(null);
}
