Specifying Dataset as in SPARQL Protocol

[Martynas Jusevičius]

Hey,

I am implementing some of the last bits in the SPARQL Protocol,
namely 2.1.4 Specifying an RDF Dataset and 2.2.3 Specifying an RDF Dataset.

Would the following be a correct interpretation given a default Jena
Dataset?

    public Dataset specifyDataset(Dataset defaultDataset, List<URI>
defaultGraphUris, List<URI> namedGraphUris)
    {
        if (!defaultGraphUris.isEmpty() || !namedGraphUris.isEmpty())
        {
            Dataset specified = DatasetFactory.create();

            for (URI defaultGraphUri : defaultGraphUris)

specified.getDefaultModel().add(defaultDataset.getNamedModel(defaultGraphUri.toString()));
            for (URI namedGraphUri : namedGraphUris)
                specified.addNamedModel(namedGraphUri.toString(),
defaultDataset.getNamedModel(namedGraphUri.toString()));

            return specified;
        }

        return defaultDataset;
    }

I assume there should be some similar code in Fuseki somewhere.

Thanks.


Martynas