/**
* Convert a Mulgara Value to a Jena graph node.
*
* @param obj The Mulgara value to convert.
* @return A new Jena graph node.
*/
static Node o2n(org.jrdf.graph.Node obj) {
if (obj == null) return Node.ANY;
// testing for org.jrdf.graph.URIReference
if (obj.isURIReference()) {
URIReference uRef = (URIReference) obj;
if (skolemizedBlankNodes) {
String x = uRef.getURI().toString();
if (x.startsWith(bNodeScheme)) {
x = x.substring(bNodeScheme.length());
Node n = Node.createAnon(new AnonId(x));
return n;
}
}
return Node.createURI(uRef.getURI().toString());
}
// testing for org.jrdf.graph.Literal
if (obj.isLiteral()) {
Literal literal = (Literal) obj;
if (literal.getDatatypeURI() != null) {
RDFDatatype type =
TypeMapper.getInstance().getSafeTypeByName(literal.getDatatypeURI().toString());
return Node.createLiteral(literal.getLexicalForm(), null, type);
}
return Node.createLiteral(literal.getLexicalForm(), literal.getLanguage(), null);
}
if (obj.isBlankNode()) {
BlankNodeImpl b = (BlankNodeImpl) obj;
// check if this was a Jena-allocated node
Node jenaNode = valuesToNodes.get(b);
// if not known, then create a Jena node from the Mulgara ID
return jenaNode != null ? jenaNode : Node.createAnon(new AnonId(b.getID()));
}
throw new RuntimeException("Can't convert to Jena Node : " + obj);
}
