java - 使用 OWL API 在 OWL Ontology 上编写 OWLObjectPropertyExpression

Question

我正在尝试在 OWL Ontology 对象上编写 OWLObjectPropertyExpression。如果我有一个 OWL 类，我会使用如下内容：

 OWLOntologyManager managerWriter = OWLManager.createOWLOntologyManager();
 OWLOntology ontoWrite=managerWriter.createOntology();
 OWLDataFactory factory = manager.getOWLDataFactory();
 managerWriter.addAxiom(ontoWrite,factory.getOWLDeclarationAxiom(factory.getOWLClass((cl.getIRI()))));

但是如果我想写一个 OWLObjectPropertyExpression 我应该写什么呢？提前致谢 ！。

Answer 1

下面的代码片段说明了使用 OWL API（从那里获取和改编）使用和创建 OWL 表达式的示例：

//OWL Expression we would like to create:
//in OWL Functional syntax: ObjectIntersectionOf(A ObjectSomeValuesFrom(R B))
//in Manchester syntax: A and R some B
PrefixManager pm = new DefaultPrefixManager("http://example.org/");
OWLClass A = factory.getOWLClass(":A", pm);
OWLObjectProperty R = factory.getOWLObjectProperty(":R", pm);
OWLClass B = factory.getOWLClass(":B", pm);

//The expression
OWLClassExpression expression = 
  factory.getOWLObjectIntersectionOf(A, factory.getOWLObjectSomeValuesFrom(R, B));

//Create a class in order to use the expression
OWLClass C = factory.getOWLClass(":C", pm);

// Declare an equivalentClass axiom
//Just there to show how an example on how to use the expression
OWLAxiom definition = factory.getOWLEquivalentClassesAxiom(C, expression);
manager.addAxiom(ontology, definition);