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我試圖顯示我的本體的實例的數據屬性值。我正在爲此使用耶拿。我的情況如下:從本體的實例中提取數據屬性值
<!-- http://www.semanticweb.org/ontologies/2013/3/Ontology1365003423152.owl#Mailbomb -->
<NamedIndividual rdf:about="&Ontology1365003423152;Mailbomb">
<rdf:type rdf:resource="&Ontology1365003423152;Attack"/>
<Ontology1365003423152:HasService>smtp</Ontology1365003423152:HasService>
<Ontology1365003423152:HasFlag>SF</Ontology1365003423152:HasFlag>
<Ontology1365003423152:HasDuration>1</Ontology1365003423152:HasDuration>
<Ontology1365003423152:hasSrcBytes>2599</Ontology1365003423152:hasSrcBytes>
<Ontology1365003423152:HasType>Mailbomb</Ontology1365003423152:HasType>
<Ontology1365003423152:HasProtocol>tcp</Ontology1365003423152:HasProtocol>
<Ontology1365003423152:hasDestBytes>293</Ontology1365003423152:hasDestBytes>
</NamedIndividual>
<!-- http://www.semanticweb.org/ontologies/2013/3/Ontology1365003423152.owl#Smurf -->
<NamedIndividual rdf:about="&Ontology1365003423152;Smurf">
<rdf:type rdf:resource="&Ontology1365003423152;Attack"/>
<Ontology1365003423152:HasService>ecr_i</Ontology1365003423152:HasService>
<Ontology1365003423152:HasProtocol>icmp</Ontology1365003423152:HasProtocol>
<Ontology1365003423152:hasSrcBytes>1032</Ontology1365003423152:hasSrcBytes>
<Ontology1365003423152:HasFlag>SF</Ontology1365003423152:HasFlag>
<Ontology1365003423152:HasType>Smurf</Ontology1365003423152:HasType>
<Ontology1365003423152:hasDestBytes>0</Ontology1365003423152:hasDestBytes>
<Ontology1365003423152:HasDuration>0</Ontology1365003423152:HasDuration>
</NamedIndividual>
而且我在Java代碼中使用耶拿如下:
public static void main(String[] args) {
String a[] = new String [7];
OntProperty p[] = new OntProperty [7];
OntModel inf = ModelFactory.createOntologyModel();
InputStream in = FileManager.get().open(inputFileName);
if (in == null) {
throw new IllegalArgumentException("File: " + inputFileName + " not found");
}
inf.read(in, "");
OntClass clas =inf.getOntClass("http://www.semanticweb.org/ontologies/2013/3/Ontology1365003423152.owl#Attack");
p[0] = inf.getOntProperty("HasProtocol");
p[1] = inf.getOntProperty("HasService");
p[2] = inf.getOntProperty("HasDuration");
p[3] = inf.getOntProperty("HasFlag");
p[4] = inf.getOntProperty("hasSrcBytes");
p[5] = inf.getOntProperty("hasDestBytes");
p[6] = inf.getOntProperty("HasType");
ExtendedIterator instances = clas.listInstances();
Individual instance = null;
while (instances.hasNext()) {
instance = (Individual) instances.next();
System.out.println(a[0] = instance.getPropertyValue(p[0]).toString());
System.out.println(a[1] = instance.getPropertyValue(p[1]).toString());
System.out.println(a[2] = instance.getPropertyValue(p[2]).toString());
System.out.println(a[3] = instance.getPropertyValue(p[3]).toString());
System.out.println(a[4] = instance.getPropertyValue(p[4]).toString());
System.out.println(a[5] = instance.getPropertyValue(p[5]).toString());
System.out.println(a[6] = instance.getPropertyValue(p[6]).toString());
}
}
現在印刷的第一次迭代只打印零,而第二隻293(7次0,隨後到293倍)。我想我正在做一些錯誤的事情,因爲它爲所有事物檢索相同的值。我看到它的方式只是打印每個實例的最後一個數據屬性值。