Java 显示在jena中的protege中创建的本体的数据类型属性值
我在protege中创建了一个本体，希望显示对象属性的值，并将值保存在数组中，以便使用该值进行推理。问题是我无法检索数据类型值，仅显示域和范围，但没有错误。请帮助找到解决方案Java 显示在jena中的protege中创建的本体的数据类型属性值,java,jena,owl,protege,Java,Jena,Owl,Protege,我在protege中创建了一个本体，希望显示对象属性的值，并将值保存在数组中，以便使用该值进行推理。问题是我无法检索数据类型值，仅显示域和范围，但没有错误。请帮助找到解决方案 import java.io.IOException; import com.hp.hpl.jena.ontology.DatatypeProperty; import com.hp.hpl.jena.ontology.EnumeratedClass; import com.hp.hpl.jena.ont
import java.io.IOException;
import com.hp.hpl.jena.ontology.DatatypeProperty;
import com.hp.hpl.jena.ontology.EnumeratedClass;
import com.hp.hpl.jena.ontology.Individual;
import com.hp.hpl.jena.ontology.OntClass;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.ontology.OntResource;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.RDFNode;
import com.hp.hpl.jena.util.FileManager;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
public class GetStartedSemWeb {
static String defaultNameSpace ="http://semanticweb.org/ontologies#";
Model schema = null;
public static void main(String[] args) throws IOException
{
GetStartedSemWeb getsemweb = new GetStartedSemWeb();
System.out.println(" Adding student ontology ");
getsemweb.loadontology();
}
private void loadontology() throws IOException
{
schema = ModelFactory.createOntologyModel();
java.io.InputStream inschema = FileManager.get().open("C:/Users/Desktop/Documents/Extracting knowledge from ontology using jena/getstarted.owl");
schema.read(inschema,defaultNameSpace);
System.out.println("new ontology added");
ExtendedIterator it = ((OntModel) schema).listClasses();
while(it.hasNext())
{
OntClass cls= (OntClass)it.next();
System.out.println("URI of classes of Merged University Ontology are "+cls.getURI());
ExtendedIterator pinstance = ((OntClass)cls).listInstances();
while(pinstance.hasNext())
{
Individual pinstance1= (Individual)pinstance.next();
System.out.println("Individual of " +cls.getLocalName() + pinstance1.getLocalName());
ExtendedIterator dp = ((OntModel) schema).listDatatypeProperties();
while(dp.hasNext())
{
DatatypeProperty p = (DatatypeProperty) dp.next();
if (p.isDatatypeProperty() && p.getDomain()!=null && p.getRange()!=null)
{
System.out.println("Data Property Name: "+ p.getLocalName());
System.out.println("Domain: "+ p.getDomain().getLocalName());
EnumeratedClass e = null;
ExtendedIterator i = null;
if(p.getRange().asClass().isEnumeratedClass())
{
e = p.getRange().asClass().asEnumeratedClass();
i = e.getOneOf().iterator();
RDFNode prop = null;
String s=null;
System.out.println("Range: ");
while(i.hasNext())
{
prop = (RDFNode) i.next();
s=((Object) prop).getClass().toString().split("\\^\\^")[0];
RDFNode propvalue = ((OntResource) prop).getPropertyValue(p);
System.out.println(" Property value is" +propvalue);
System.out.println(s);
}
}
else
System.out.println("Range: "+ p.getRange().getLocalName());
}
System.out.println("\n");
}
}
}
}
schema.close();
OWL file content
// OWL file content
<rdf:RDFxml:base="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl"><owl:Ontology rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl"><owl:versionIRI rdf:resource="http://www.semanticweb.org/ontologies/2013/9/Ontology1382504980350.owl"/></owl:Ontology><!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Datatypes
//
///////////////////////////////////////////////////////////////////////////////////////
--><!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Object Properties
//
///////////////////////////////////////////////////////////////////////////////////////
--><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasaAcquired - -><owl:ObjectProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasaAcquired"> <rdfs:range rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Academic"/><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/></owl:ObjectProperty><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#isAcquiredBy --><owl:ObjectProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#isAcquiredBy"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Academic"/><rdfs:range rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><owl:inverseOf rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasaAcquired"/></owl:ObjectProperty><!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Data properties
//
///////////////////////////////////////////////////////////////////////////////////////
--><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasAge --> <owl:DatatypeProperty r df:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasAge"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><rdfs:range rdf:resource="http://www.w3.org/2002/07/owl#real"/></owl:DatatypeProperty><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasAggregate --><owl:DatatypeProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasAggregate"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#integer"/></owl:DatatypeProperty><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasEmailaddress --><owl:DatatypeProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasEmailaddress"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/></owl:DatatypeProperty><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasGender --><owl:DatatypeProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasGender"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/></owl:DatatypeProperty><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasName --><owl:DatatypeProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasName"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/></owl:DatatypeProperty><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasPostaladress --><owl:DatatypeProperty rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#hasPostaladress"><rdfs:domain rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#string"/></owl:DatatypeProperty><!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Classes
//
///////////////////////////////////////////////////////////////////////////////////////
--><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Academic --><owl:Class rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Academic"><rdfs:subClassOf rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/></owl:Class><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#General --><owl:Class rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#General"><rdfs:subClassOf rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/></owl:Class><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Personal --><owl:Class rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Personal"><rdfs:subClassOf rdf:resource="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/></owl:Class><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student --><owl:Class rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Student"/><!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Individuals
//
///////////////////////////////////////////////////////////////////////////////////////
--><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#jack --><owl:NamedIndividual rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#jack"><hasGender>male</hasGender><hasAggregate>50</hasAggregate><hasAge>20</hasAge><hasPostaladress>illonious chicago</hasPostaladress><hasName>jack</hasName><hasEmailaddress>jackid</hasEmailaddress></owl:NamedIndividual><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#jill_ --><owl:NamedIndividual rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#jill_"><hasGender>male</hasGender><hasEmailaddress>jillid</hasEmailaddress><hasName>jill</hasName><hasAggregate>34</hasAggregate><hasPostaladress>chicago</hasPostaladress><hasAge>21</hasAge></owl:NamedIndividual><!-- http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#jim --><owl:NamedIndividual rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#jim"><hasEmailaddress>jimid</hasEmailaddress><hasAggregate>70</hasAggregate><hasName>jim</hasName><hasGender>male</hasGender><hasAge>23</hasAge><hasPostaladress>chicago</hasPostaladress></owl:NamedIndividual><!--
///////////////////////////////////////////////////////////////////////////////////////
//
// General axioms
//
///////////////////////////////////////////////////////////////////////////////////////
--><rdf:Description><rdf:type rdf:resource="http://www.w3.org/2002/07/owl#AllDisjointClasses"/><owl:members rdf:parseType="Collection"><rdf:Description rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Academic"/><rdf:Description rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#General"/><rdf:Description rdf:about="http://www.semanticweb.org/ontologies/2013/9/23/Ontology1382505604507.owl#Personal"/></owl:members></rdf:Description></rdf:RDF>
OWL文件内容
//OWL文件内容
Male5020不和谐的芝加哥杰基德Malejillidjill34芝加哥21 Jimid70 Jimmale23芝加哥
数据类型属性的范围在逻辑上不能是。枚举类是定义为固定的个体集合的owl类。这些人不能是文字。DatatypeProperty
范围内的值只能是Literal
您要使用，它表示Literal
值的枚举。将对.asClass（）.isEnumeratedClass（）的测试替换为
在数据中，您希望使用owl:DataRange
和owl:oneOf
创建属性的范围
这仅适用于希望探索范围被枚举为owl:DataRange
的owl:DatatypeProperty
的允许值的理论空间的情况。虽然您的代码暗示这是您的目标，但问题的措辞暗示了另一个目标：您有一些owl:DatatypeProperty
，ex:p
，并且您希望标识该属性的所有对象，因为它们存在于您的模型中
如果这是您的目标，那么您可以简单地向模型询问文字值：
最终扩展迭代器观察范围=
新的迭代程序（）
第三种（Iter.distinct（model.listObjectsOfProperty（p）））
.mapWith（新的Map1（）{
@凌驾
公共文字映射1（最终RDFNode o）{
返回o.asLiteral（）；
}});
您的代码的格式太难理解了，而且您的OWL代码片段似乎没有显示任何使用属性的三元组，因此我们无法知道您希望代码生成什么。