Add information whether or not a cached graph was used #149

sparql-anything-engine/src/main/java/io/github/sparqlanything/engine/DatasetGraphCreator.java

@@ -190,6 +190,7 @@ private void createAuditGraph(DatasetGraph dg, Properties p, boolean b) {
 				auditGraph.addProperty(RDF.type, ResourceFactory.createResource(SD.concat("NamedGraph")));
 				auditGraph.addProperty(ResourceFactory.createProperty(SD.concat("name")), g.getURI());
 				auditGraph.addLiteral(VOID.triples, dg.getGraph(g).size());
+//				auditGraph.addLiteral(VOID., dg.getGraph(g).size());
 				auditGraph.addLiteral(auditGraph.getModel().createProperty(Triplifier.FACADE_X_CACHED_GRAPH), b);
 			}
 			dg.addGraph(nodeGraph, audit.getGraph());

sparql-anything-it/src/test/java/io/github/sparqlanything/it/ItTripleFilteringTest.java

@@ -71,10 +71,10 @@ public void Audit_JSON2() throws URISyntaxException {
 						"PREFIX void: <http://rdfs.org/ns/void#>\n" +
 						"SELECT DISTINCT ?g ?triples WHERE { " +
 						"{" +
-						"SERVICE <x-sparql-anything:namespace=http://www.example.org#,audit=1,location="
+						"SERVICE <x-sparql-anything:namespace=http://www.example.org#,audit=true,location="
 						+ location + "> { graph ?g {[] ?p [] } . graph xyz:audit { ?g void:triples ?triples } } " +
 						"} UNION {" +
-						"SERVICE <x-sparql-anything:namespace=http://www.example.org#,audit=1,location="
+						"SERVICE <x-sparql-anything:namespace=http://www.example.org#,audit=true,location="
 						+ location + "> { graph ?g {[] a [] } . graph xyz:audit { ?g void:triples ?triples } } " +
 						"" +
 						"}}");