@Override
public void meet(StatementPattern node) throws RepositoryException {
Resource subj = (Resource) node.getSubjectVar().getValue();
IRI pred = (IRI) node.getPredicateVar().getValue();
Value obj = node.getObjectVar().getValue();
Resource[] ctx = getContexts(node.getContextVar());
for (RepositoryConnection member : members) {
if (member.hasStatement(subj, pred, obj, true, ctx)) {
return;
}
}
node.replaceWith(new EmptySet());
}
@Override
protected void meetSP(StatementPattern node) throws Exception {
StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
URI pred = (URI) predVar.getValue();
String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null
&& !RDF.NAMESPACE.equals(predNamespace)
&& !SESAME.NAMESPACE.equals(predNamespace)
&& !RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
URI transPropUri = (URI) predVar.getValue();
if (inferenceEngine.isTransitiveProperty(transPropUri)) {
node.replaceWith(
new TransitivePropertySP(
sp.getSubjectVar(), sp.getPredicateVar(), sp.getObjectVar(), sp.getContextVar()));
}
}
}