SparqlQueryEvaluator

[naturzukunft]

Hi there,
i've problems to understand the DefaultGraphs & NamedGraphs Parameter of org.eclipse.rdf4j.http.server.readonly.sparql.SparqlQueryEvaluator.

/**
 * Gets the default graph URIs of this dataset. An empty default graph set and a non-empty named graph set indicates
 * that the default graph is an empty graph. However, if both the default graph set and the named graph set are
 * empty, that indicates that the store's default behaviour should be used.
 */
Set<IRI> getDefaultGraphs();

/**
 * Gets the named graph URIs of this dataset. An empty named graph set and a non-empty default graph set indicates
 * that there are no named graphs. However, if both the default graph set and the named graph set are empty, that
 * indicates that the store's default behaviour should be used.
 */
Set<IRI> getNamedGraphs();

My query is:

SELECT DISTINCT * WHERE {
?subject <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>/rdfs:subClassOf* <https://www.w3.org/ns/activitystreams#Object>  . 
}

The graphs in the repo are: (Result of con.getContextIDs().forEach(System.out::println);)

1. https://www.w3.org/ns/activitystreams#activitystreams-definitions.ttl-type
2. http://example.org/camel/0815
3. http://example.org/camel/e9a8fe87-a43b-4d72-870f-265e36192ac1
4. http://example.org/camel/0815/outbox
5. https://www.w3.org/ns/activitystreams#Public
6. https://schema.org/schemaorg-all-https.ttl-type
7. https://linkedopenactors.org/rdf-type-context

passing:

String[] namedGraphUris = new String[] {};
String defaultGraphUri = null;

i get a result:

ContentType: application/sparql-results+json
{
  "head" : {
    "vars" : [
      "subject"
    ]
  },
  "results" : {
    "bindings" : [
      {
        "subject" : {
          "type" : "uri",
          "value" : "http://example.org/camel/testObject1"
        }
      },
      {
        "subject" : {
          "type" : "uri",
          "value" : "http://example.org/camel/0815"
        }
      },
      {
        "subject" : {
          "type" : "uri",
          "value" : "http://example.org/camel/e9a8fe87-a43b-4d72-870f-265e36192ac1"
        }
      },
      {
        "subject" : {
          "type" : "uri",
          "value" : "http://example.org/camel/testActivity"
        }
      }
    ]
  }
}

But i wish to NOT include all graphs.

• http://example.org/camel/0815
• http://example.org/camel/e9a8fe87-a43b-4d72-870f-265e36192ac1

are different users and the query should be executed only to one of them.

String[] namedGraphUris = new String[] {	    		
 "http://example.org/camel/0815",
 "https://schema.org/schemaorg-all-https.ttl_type",
 "https://www.w3.org/ns/activitystreams#activitystreams-definitions.ttl_type",
 "http://example.org/camel/0815/outbox",
 "https://www.w3.org/ns/activitystreams#Public",
 "https://linkedopenactors.org/rdf-type-context"
};
	    		
String defaultGraphUri = null;

gives me no result.

[naturzukunft]

i pushed the sample including the "database" here

[naturzukunft]

No i added tests to a fork

[naturzukunft]

i come closer SimpleDataset

		for (IRI uri : getDefaultGraphs()) {
			sb.append("FROM ");
			appendURI(sb, uri);
		}
		for (IRI uri : getNamedGraphs()) {
			sb.append("FROM NAMED ");
			appendURI(sb, uri);
		}