耶拿模型将我的RDF类型显式声明转换为隐式,并将格式弄乱 [英] Jena Model converts my RDF type explicit declaration to implicit and messes with the format
问题描述
我有以下代码,该代码创建具有某些设置属性的RDF资源并将其打印在控制台上.
I have the following code that creates an RDF resource with some set properties and prints it on console.
String uri = "http://krweb/";
String name = "Giorgos Georgiou";
String phone = "6976067554";
String age = "27";
String department = "ceid";
String teaches = "java";
Model model = ModelFactory.createOntologyModel();
model.setNsPrefix("krweb", uri);
Resource giorgosgeorgiou = model.createResource(uri+name.toLowerCase().replace(" ", ""), model.createResource(uri+"Professor"));
Property has_name = model.createProperty(uri+"has_name");
Property has_phone = model.createProperty(uri+"has_phone");
Property has_age = model.createProperty(uri+"has_age");
Property member_of = model.createProperty(uri+"member_of");
Property teach = model.createProperty(uri+"teaches");
giorgosgeorgiou.addProperty(teach, model.createResource(uri+teaches));
giorgosgeorgiou.addProperty(member_of, model.createResource(uri+department));
giorgosgeorgiou.addProperty(has_age,age);
giorgosgeorgiou.addProperty(has_phone,phone);
giorgosgeorgiou.addProperty(has_name,name);
//giorgosgeorgiou.addProperty(RDF.type, model.createResource(uri+"Professor"));
model.write(System.out,"RDF/XML");
我希望模型以这种格式打印:
I want the model printed in this format:
<rdf:Description rdf:about="http://krweb/giorgosgeorgiou">
<rdf:type rdf:resource="http://krweb/Professor"/>
<krweb:has_name>Giorgos Georgiou</krweb:has_name>
<krweb:has_phone>6976067554</krweb:has_phone>
<krweb:has_age>27</krweb:has_age>
<krweb:member_of rdf:resource="http://krweb/ceid"/>
<krweb:teaches rdf:resource="http://krweb/java" />
</rdf:Description>
相反,我得到了:
<krweb:Professor rdf:about="http://krweb/giorgosgeorgiou">
<krweb:has_name>Giorgos Georgiou</krweb:has_name>
<krweb:has_phone>6976067554</krweb:has_phone>
<krweb:has_age>27</krweb:has_age>
<krweb:member_of rdf:resource="http://krweb/ceid"/>
<krweb:teaches rdf:resource="http://krweb/java"/>
</krweb:Professor>
以某种方式,rdf类型属性被转换为一些隐式声明,并以我认为是漂亮"的格式呈现.有办法绕过这个吗?
Somehow, the rdf type property gets converted to some implicit declaration and is presented in what I suppose is a "pretty" format. Is there a way to bypass this?
推荐答案
内部RDF数据保存为三元组-不知道如何存储它们在输入时的格式.
Internally the RDF data is held as triples - no knowledge of how they were formatted on input is stored.
默认输出是漂亮的RDF/XML.
The default output is pretty RDF/XML.
要使用纯净的平面格式,请使用RDFFormat.RDFXML_PLAIN
To get the plain, flat format use RDFFormat.RDFXML_PLAIN
RDFDataMgr.write(System.out, model, RDFFormat.RDFXML_PLAIN);
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