如何将猫头鹰类导入日食

Question

I want to import and list semantic web (owl) file's classes into the eclipse. I did import pellet and protege library my eclipse program but still I see force close my android project. nothing red line or wrong code because I used same codes in net beans. my codes is below..

public static final IRI localLocation_IRI = IRI.create("file:c:///rdfex.owl");
public static final IRI Ont_Base_IRI = IRI.create("http://www.emkarhafriyat.com/owlex.owl");
    OWLOntologyManager m = OWLManager.createOWLOntologyManager();
    OWLDataFactory f = OWLManager.getOWLDataFactory();
    OWLOntology o = null;
    public void testAddAxioms() {
        try {
            o = m.loadOntologyFromOntologyDocument(Ont_Base_IRI);
            OWLClass clsA = f.getOWLClass(IRI.create(Ont_Base_IRI + "#ClassA"));
            OWLClass clsB = f.getOWLClass(IRI.create(Ont_Base_IRI + "#ClassB"));
            // Now create the axiom
            OWLAxiom ax1 = f.getOWLSubClassOfAxiom(clsA, clsB);
            // add the axiom to the ontology.
            AddAxiom addAxiom1 = new AddAxiom(o, ax1);
            // We now use the manager to apply the change
            m.applyChange(addAxiom1);
            // print all classes
            for (OWLClass cls : o.getClassesInSignature()) {
               EditText edit = (EditText) findViewById(R.id.editText1);
               edit.setText((CharSequence) cls);
            }
            m.removeOntology(o);
        } catch (Exception e) {
            EditText edit = (EditText) findViewById(R.id.editText1);
            edit.setText("Not successfull");
        }
    }

I have mistake this code segment

public static final IRI localLocation_IRI = IRI.create("file:c:///rdfex.owl");
public static final IRI Ont_Base_IRI = IRI.create("http://www.emkarhafriyat.com/owlex.owl");

Answer 1

There is no ontology in the URL http://www.emkarhafriyat.com/owlex.owl (404) therefore nothing can be loaded by m.loadOntologyFromOntologyDocument(Ont_Base_IRI); and you get an error.

To fix it, you should either expose your OWL file at the specified URL or to load the OWL file from local. You can do it this way:

//Create the file object
File file = new File("/your/local/path/example.owl");
// Now load the local copy of the ontology     
OWLOntology yourOntology = manager.loadOntologyFromOntologyDocument(file);