使用OWL API分别检索Data Properties的DataProperties和Sub Properties

Question

我在eclipse中使用owl api 4.0。 ontotlogy的设计使得个人拥有属性，并且每个属性都具有inturn属性，如下图所示： -

我想分别检索主要属性，即canCraw，canBreath，leg和它们的子属性。我使用以下代码： -

OWLClass animalCl = datafactory.getOWLClass(IRI.create(myOntologyIRI + "Animal")); // Animal is the Class name
NodeSet<OWLNamedIndividual> animalIndl = reasoner.getInstances(animalCl, false);

for (OWLNamedIndividual animalNamedIndl : animalIndl.getFlattened())
{
 line1:    Set<OWLDataPropertyAssertionAxiom> animalPropAll= myOntology.getDataPropertyAssertionAxioms(animalNamedIndl);
 mainprop: for (OWLDataPropertyAssertionAxiom ax: animalPropAll) 
  { 
   System.out.println("the propery retrieved = " + ax.getProperty()) ;  // the sub properties are printed out here alongwith main properties

       line2: NodeSet<OWLDataProperty> properties = reasoner.getSubDataProperties((OWLDataProperty) ax.getProperty(), false);
     subprop: for (OWLDataProperty mysubproperty : properties.getFlattened())
      System.out.println("and the sub property is " + mysubproperty); // this is where i expect the sub properties of the properties
  }
}

上述代码的输出是： -

the property retrieved = <http://localhost:3030/BiOnt.owl#canCrawl> // this is fine                                                   
the property retrieved = <http://localhost:3030/BiOnt.owl#crawlWt>  // why is this sub property being printed here? (printing from mainprop for loop)  
and the sub property is <http://localhost:3030/BiOnt.owl#crawlWt>      // this is fine (printing from subprop for loop)
          .
          .
          .
 the property retrieved = <http://localhost:3030/BiOnt.owl#legs>        // this is fine                                                   
 the property retrieved = <http://localhost:3030/BiOnt.owl#legsWt>  // why is this sub property being printed here?  
 and the sub property is <http://localhost:3030/BiOnt.owl#legsWt>   // this is fine  

我做错了什么。提前谢谢。

Answer 1

reasoner.getSubDataProperties((OWLDataProperty) ax.getProperty(), false);

false参数表示任何级别的子属性。 如果将其切换为true，则推理器将仅为您提供直接子属性。如果我正确理解您的要求，那就是您正在寻找的内容。