[英]retrieve owl file data using Jena
我有以下owl文件,並希望將相關數據檢索到給定的類。
<owl:Class rdf:about="http://purl.obolibrary.org/obo/DOID_0001">
<rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/DOID_11"/>
<obo:IAO_11 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">A def def def def.</obo:IAO_0000115>
<oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">AA:006394</oboInOwl:hasDbXref>
<oboInOwl:hasExactSynonym rdf:datatype="http://www.w3.org/2001/XMLSchema#string">abcde</oboInOwl:hasExactSynonym>
<rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">ABCDEFG</rdfs:label>
</owl:Class>
例如,我想使用以下代碼來檢索subClassOf,該子類應為DOID_11而不成功:
//create the reasoning model using the base
OntModel inf = ModelFactory.createOntologyModel();
// use the FileManager to find the input file
InputStream in = FileManager.get().open(inputFileName);
if ( in == null) {
throw new IllegalArgumentException("File: " + inputFileName + " not found");
}
inf.read( in , "");
ExtendedIterator <? > classes = inf.listClasses();
while (classes.hasNext()) {
OntClass essaClasse = (OntClass) classes.next();
System.out.println("Classe: " + essaClasse.getLocalName());
for (Iterator <? > i = essaClasse.listSubClasses(); i.hasNext();) {
OntClass c = (OntClass) i.next();
System.out.print(" " + c.getLocalName() + "\n");
} // end for
}
我只得到“ DOID_0001”,而不是“ DOID_0001”和“ DOID_11”。 我還需要獲取所有其他信息,例如“”和“
不,你錯了。 本體中的陳述是
DOID_0001 rdfs:subClassOf DOID_11
這意味着, DOID_11
是超DOID_0001
而不是相反。 而且,如果您請求DOID_0001
所有子類,則實際上只是類本身是微不足道的推斷。
可以通過以下方式檢索每個類的語句
StmtIterator stmtIterator = inf.listStatements(essaClasse, null, (RDFNode) null);
while(stmtIterator.hasNext()) {
Statement st = stmtIterator.next();
Property p = st.getPredicate();
RDFNode o = st.getObject();
System.out.println(p + ":" + o);
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.