Re: Specifying Dataset as in SPARQL Protocol

[Andy Seaborne]

Look at
  class DynamicDatasets
  use of DatasetDescription
  SPARQL_Query.decideDataset

    Andy

On 27/12/17 20:37, Martynas Jusevičius wrote:

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