On 31/07/13 11:41, Adeeb Noor wrote:
Thanks Anday:
here is my new code and I am still getting this warning message:
04:37:02 WARN riot :: Only triples or default graph
data expected : named graph data ignored
String directory = "/Users/adeebnoor/Desktop/Desktop/DDID/UMLStdb";
Dataset dataset = TDBFactory.createDataset(directory);
String source = "/Users/adeebnoor/Downloads/Ontologies/umls.trig";
Model m = ModelFactory.createDefaultModel() ;
System.out.println("start loading");
RDFDataMgr.read(m, source);
System.out.println("done loading");
m.close();
dataset.close();
Am I doing something wrong?
AdeeB
No - as I described this is exactly what to expect IF you load a model
with TriG.
If you want to work with named graphs, use the datasets:
Dataset ds = TDBFactory.createDataset() ;
RDFDataMgr.read(dataset, source) ;
(note - for what might be 100m quads, this is slow.)
Use the bulk loader for speed.
You can do it in code but I'd advise you not to do so:
DatasetGraphTDB dsg =
((DatasetGraphTransaction)dataset.asDatasetGraph()).get() ;
TDBLoader.load(dsg, "D.trig") ;
RDFDataMgr.write(System.out, ds, Lang.TRIG) ;
You are going behind the systems back to some extent. The script
tdbloader knows all the tricks and safely does it.
Andy
