static Set<Resource> subjects(Model model, Property p, RDFNode r) {
Set<Resource> subjects = new HashSet<>();
ResIterator it = model.listSubjectsWithProperty(p, r);
while (it.hasNext()) subjects.add(it.next().asResource());
it.close();
return subjects;
}
@Override
public List<Node> getSubjects(Node predicate, Node object) {
Model graph = null;
GraphConnection graphConnection = null;
try {
graphConnection = openGraph();
graph = graphConnection.getGraph();
graph.enterCriticalSection(Lock.READ);
SimpleSelector selector = getJenaSelector(graph, new StatementImpl(null, predicate, object));
ResIterator it =
graph.listSubjectsWithProperty(selector.getPredicate(), selector.getObject());
List<Node> res = new ArrayList<Node>();
while (it.hasNext()) {
res.add(getNXRelationsNode(it.nextResource().asNode()));
}
return res;
} finally {
if (graph != null) {
graph.leaveCriticalSection();
}
if (graphConnection != null) {
graphConnection.close();
}
}
}
private String getConfigsUriFromPrefix(String pre) {
ResIterator subjects = config.listSubjectsWithProperty(EYE.prefix, config.createLiteral(pre));
if (subjects.hasNext()) {
StmtIterator uris = config.listStatements(subjects.nextResource(), EYE.nsURI, (RDFNode) null);
if (uris.hasNext()) return uris.nextStatement().getObject().asNode().getLiteralLexicalForm();
}
return null; // Return null otherwise
}