Annotations on Object Property declarations

[neobernad]

Hi,

This pull request extends the syntax in order to define annotations on object properties declarations. For instance:

ObjectProperty: hasParent
    Annotations: skos:prefLabel 'HasParentLabel'

The latter syntax creates an annotation skos:prefLabel with the literal value HasParentLabel to the object property hasParent. Most of the file changes are due to the re-execution of the JavaCC syntax, which generates many Java files.

Since the tests are in a different project, this is the test code I used appened to BasicTest.java:

/**
    * Test object property with literal annotation.
    * <p>
    * - Precondition: The target object property and annotation property must be predefined in the ontology.
    */
   @Test
   @Category(ClassExpressionTest.class)
   public void TestObjectPropertyWithLiteralAnnotationDeclaration() throws Exception
   {
	  setPrefix(ontology, "skos", "http://www.w3.org/2004/02/skos/core#");
	  declareOWLAnnotationProperty(ontology, "skos:prefLabel");
	  declareOWLObjectProperties(ontology, "hasParent");
	  
	  String expression = "ObjectProperty: hasParent Annotations: skos:prefLabel 'HasParentLabel'";

	  Optional<? extends OWLRendering> result = createOWLAPIRendering(ontology, expression, settings);
	  assertThat(result.isPresent(), is(true));
	
	  Set<OWLAxiom> axioms = result.get().getOWLAxioms();
	  assertThat(axioms, containsInAnyOrder(
	            Declaration(HAS_PARENT),
	            AnnotationAssertion(SKOS_PREFLABEL,IRI(ONTOLOGY_ID, "hasParent"), Literal("HasParentLabel", XSD_STRING))));
   }

/**
    * Test object property with IRI annotation.
    * <p>
    * - Precondition: The target object property and annotation property must be predefined in the ontology.
    */
   @Test
   @Category(ClassExpressionTest.class)
   public void TestObjectPropertyWithIRIAnnotationDeclaration() throws Exception
   {
	  setPrefix(ontology, "foaf", "http://xmlns.com/foaf/0.1/");
	  declareOWLAnnotationProperty(ontology, "foaf:depiction");
	  declareOWLClasses(ontology, "Person", "Human");
	  declareOWLObjectProperties(ontology, "hasParent");
	  
	  String expression = "ObjectProperty: hasParent Annotations: foaf:depiction <https://example.com/img_url.png>";

	  Optional<? extends OWLRendering> result = createOWLAPIRendering(ontology, expression, settings);
	  assertThat(result.isPresent(), is(true));

	  Set<OWLAxiom> axioms = result.get().getOWLAxioms();
	  assertThat(axioms, containsInAnyOrder(
	            Declaration(HAS_PARENT),
	            AnnotationAssertion(FOAF_DEPICTION, IRI(ONTOLOGY_ID, "hasParent"), IRI("https://example.com/img_url.png"))));
   }

[joaovictortinoco]

Looking forward to see this PR approved. Using OP on rules is a must-have.