Parsing string in TurtleSyntax to OWLClass

Question

Currently I am trying to create OWLClass from a string in Turtle syntax by first creating Jena OntModel and visiting each statement within the class. Is there a better way to create OWL Class using OWL API from Turtle syntax? Below is the string which I am trying to parse.

@prefix p0:    <http://rdf.test.com/dl_reasoning/> .
@prefix p1:    <http://rdf.test.com/ns/test_rm#> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .

p0:safetyGoal_1  a       rdfs:Class , p1:SafetyGoal ;
    rdfs:subClassOf  p1:SafetyGoal ;
    p1:fulfilledBy   p0:fsr_fuel , p0:fsr_coo .

p0:safetyGoal_3  a       rdfs:Class , p1:SafetyGoalVersion ;
    rdfs:subClassOf  p1:SafetyGoal ;


p0:safetyGoal_2  a       rdfs:Class , p1:SafetyGoalVersion ;
    rdfs:subClassOf  p1:SafetyGoal ;
    p1:fulfilledBy   p0:fsr_fuel ;
    p1:fulfills      p0:fsr_coo .

Answer 1

The string you're trying to parse does not contain just classes - it contains axioms as well. In order to be a full ontology, it only lacks an ontology declaration. It should be possible to parse this straight to an ontology - which would be anonymous - by parsing it with one of the Turtle parsers in OWLAPI.

Have you tried parsing this to an OWLOntology?

String in = "...";
StringDocumentSource input = new StringDocumentSource(in);
OWLOntologyManager m = OWLManager.createOWLOntologyManager();
OWLOntology o = m.loadOntologtFromOntologyDocument(input);

Listing the axioms or iterating through the signature of the ontology should provide you with enough structure to move forward in your work.

Side note: these two lines seem to be missing a dot:

p0:safetyGoal_3  a       rdfs:Class , p1:SafetyGoalVersion ;
rdfs:subClassOf  p1:SafetyGoal ;

There should be a full stop to allow parsing:

p0:safetyGoal_3  a       rdfs:Class , p1:SafetyGoalVersion ;
rdfs:subClassOf  p1:SafetyGoal .