列出jena的qualifiedCardinality限制资源
列出jena的qualifiedCardinality限制资源
提问于 2016-12-27 05:05:00
我是jena库的新手，我想列出所有资源，属性，qualifiedCardinality限制的数据类型。
我的限制：
...
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#sensingMethodUsed"/>
<owl:onClass rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#Sensing"/>
<owl:qualifiedCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">1</owl:qualifiedCardinality>
</owl:Restriction>
</rdfs:subClassOf>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#featureOfInterest"/>
<owl:onClass rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#FeatureOfInterest"/>
<owl:qualifiedCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger">1</owl:qualifiedCardinality>
</owl:Restriction>
</rdfs:subClassOf>
...所需的字符串输出：
qualcard sensingMethodUsed nonNegativeIteger 1 Sensing
qualcard featureOfInterest nonNegativeIteger 1 FeatureOfInterest有谁能帮帮我吗？
回答 1
Stack Overflow用户
发布于 2017-09-07 22:23:20
该代码片段显示它是OWL2本体。org.apache.jena.ontology).仅支持OWL1 (请参见软件包Jena但是您也可以选择使用来自ONT-API的，它完全类似于org.apache.jena.ontology.OntModel，但用于OWL2规范。ONT-API是一个基于jena的库。
请参见示例：
// build the model with qualified exact cardinality object property restrictions:
String ns = "http://purl.oclc.org/NET/ssnx/ssn#";
OntModel m = OntModelFactory.createModel();
m.setNsPrefixes(OntModelFactory.STANDARD);
OntObjectProperty op1 = m.createObjectProperty(ns + "sensingMethodUsed");
OntClass c1 = m.createOntClass(ns + "Sensing");
OntObjectProperty op2 = m.createObjectProperty(ns + "featureOfInterest");
OntClass c2 = m.createOntClass(ns + "FeatureOfInterest");
m.createOntClass("http://example.com#clazz")
.addSuperClass(m.createObjectCardinality(op1, 1, c1))
.addSuperClass(m.createObjectCardinality(op2, 1, c2));
// printing:
m.write(System.out, "rdf/xml");
System.out.println();
// list all exact cardinality restrictions:
m.ontObjects(OntClass.ObjectCardinality.class).forEach(c -> {
int cardinality = c.getCardinality();
OntClass onClass = c.getValue(); // cannot be null, owl:Thing if it is unqualified restriction
OntObjectProperty onProperty = c.getProperty();
OntDataRange dt = m.getDatatype(XSD.nonNegativeInteger); // only this DT is allowed
System.out.printf("qualcard %s %s %d %s%n",
onProperty.getLocalName(), dt.getLocalName(), cardinality, onClass.getLocalName());
});此示例的输出为：
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:eg="http://www.example.org/"
xmlns:vcard="http://www.w3.org/2001/vcard-rdf/3.0#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:ja="http://jena.hpl.hp.com/2005/11/Assembler#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:rss="http://purl.org/rss/1.0/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#">
<owl:Ontology/>
<owl:Class rdf:about="http://purl.oclc.org/NET/ssnx/ssn#FeatureOfInterest"/>
<owl:Class rdf:about="http://purl.oclc.org/NET/ssnx/ssn#Sensing"/>
<owl:Class rdf:about="http://example.com#clazz">
<rdfs:subClassOf>
<owl:Restriction>
<owl:onClass rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#FeatureOfInterest"/>
<owl:qualifiedCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger"
>1</owl:qualifiedCardinality>
<owl:onProperty>
<owl:ObjectProperty rdf:about="http://purl.oclc.org/NET/ssnx/ssn#featureOfInterest"/>
</owl:onProperty>
</owl:Restriction>
</rdfs:subClassOf>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onClass rdf:resource="http://purl.oclc.org/NET/ssnx/ssn#Sensing"/>
<owl:qualifiedCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#nonNegativeInteger"
>1</owl:qualifiedCardinality>
<owl:onProperty>
<owl:ObjectProperty rdf:about="http://purl.oclc.org/NET/ssnx/ssn#sensingMethodUsed"/>
</owl:onProperty>
</owl:Restriction>
</rdfs:subClassOf>
</owl:Class>
</rdf:RDF>
qualcard featureOfInterest nonNegativeInteger 1 FeatureOfInterest
qualcard sensingMethodUsed nonNegativeInteger 1 Sensing页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/41336267
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