// @SuppressWarnings("null")
// @Override
@Override
protected ExtendedIterator<Triple> graphBaseFind(TripleMatch m) {
Node s = m.getMatchSubject();
Var sVar = null;
if (s == null) {
sVar = Var.alloc("s");
s = sVar;
}
Node p = m.getMatchPredicate();
Var pVar = null;
if (p == null) {
pVar = Var.alloc("p");
p = pVar;
}
Node o = m.getMatchObject();
Var oVar = null;
if (o == null) {
oVar = Var.alloc("o");
o = oVar;
}
Triple triple = new Triple(s, p, o);
// Evaluate as an algebra expression
BasicPattern pattern = new BasicPattern();
pattern.add(triple);
Op op = new OpBGP(pattern);
// // Make remote execution object.
// System.err.println("GraphSPARQLService.graphBaseFind: Unimplemented : remote service
// execution") ;
// //Plan plan = factory.create(op, getDataset(), BindingRoot.create(), null) ;
//
// QueryIterator qIter = plan.iterator() ;
// List<Triple> triples = new ArrayList<Triple>() ;
//
//
// for (; qIter.hasNext() ; )
// {
// Binding b = qIter.nextBinding() ;
// Node sResult = s ;
// Node pResult = p ;
// Node oResult = o ;
// if ( sVar != null )
// sResult = b.get(sVar) ;
// if ( pVar != null )
// pResult = b.get(pVar) ;
// if ( oVar != null )
// oResult = b.get(oVar) ;
// Triple resultTriple = new Triple(sResult, pResult, oResult) ;
// if ( log.isDebugEnabled() )
// log.debug(" "+resultTriple) ;
// triples.add(resultTriple) ;
// }
// qIter.close() ;
// return WrappedIterator.createNoRemove(triples.iterator()) ;
return null;
}
@Override
protected ExtendedIterator<Triple> graphBaseFind(TripleMatch m) {
Node s = m.getMatchSubject();
Node p = m.getMatchPredicate();
Node o = m.getMatchObject();
Resource subj = (s == null ? null : Convert.nodeToValueResource(valueFactory, s));
URI pred = (p == null ? null : Convert.nodeURIToValue(valueFactory, p));
Value obj = (o == null ? null : Convert.nodeToValue(valueFactory, o));
try {
RepositoryResult<Statement> iter1 = connection.getStatements(subj, pred, obj, true, contexts);
return new RepositoryResultIterator(iter1);
} catch (RepositoryException ex) {
LOG.error("Repository exception in graphBaseFind", ex);
throw new JenaException(ex);
}
}