Triple extraction with sujet = _:Doc*-*

[Yves Teissier]

Hi everybody,

I don't find the way find a triple by using the sujet = _:Doc-
This is the triple:

"_:Doc0-1"  "rdfs:comment"  ""function VariableTypeValue2ElementVal(in String, out String)
{
     String inVal = in.GetValue()
     out = inVal
}"" 

I'm using this code:

owlcpp::Node_id const* subject = triple_store.find_node_iri("_:Doc0-1");

      if( subject ) BOOST_FOREACH(
         owlcpp::Triple const& triple,
         triple_store.find_triple(*subject, owlcpp::any(), owlcpp::any(), owlcpp::any())
      ) {
         std::cout
          << "****************************************************\n"
          << '\"'
          << to_string(triple.subj_, triple_store) << "\"\t\""
          << to_string(triple.pred_, triple_store) << "\"\t\""
          << to_string(triple.obj_, triple_store) << "\"\t\n"
          ;
         // Get the source ID (doc...)
        DocId = to_string(triple.subj_, triple_store);
      }

By I have subject = 0x0

There're a way to find this triple ?

Regards,
Yves Teissier

[M Levin]

It does not find your subject and returns a null pointer.
You are looking for a blank node, right? Have you tried using tripple_store.find_blank(n, did)?