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Editorial Team
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Asked: 2026-06-04T07:14:27+00:00

Okay I’ve got a problem I’d appreciate someone spreading some light on. Basically I

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Okay I’ve got a problem I’d appreciate someone spreading some light on. Basically I have the following example below

<rdf:Description rdf:about="http://test.com">
<hasX></hasX>
<hasY></hasY>
<hasA></hasA>
<hasA></hasA>
<hasA></hasA>
</rdf:Description>

I’m trying to produce the following: 

<rdf:Description rdf:about="http://test.com">
<hasX></hasX>
<hasY></hasY>
<hasZ>
<hasA></hasA>
<hasA></hasA>
<hasA></hasA>
</hasZ>
</rdf:Description>

I’ve tried adding Property to a Property then a Resource, declaring new Resource, adding Literals, every possible combination of these, however the close I’ve gotten is it to generate a new rdf:description block containing the data I want, outside of the original rdf:description making it worthless.

I really don’t want another <rdf:Description rdf:about=""> to describe the A tags.

Here’s a small test example

String NS = "http://example.com/test";      
Model m = ModelFactory.createDefaultModel();
Resource r = m.createResource("http://meetup/nyc");

Property p = m.createProperty(XmlParser.NS + "hasData");
Property p2 = m.createProperty(XmlParser.NS + "hasData");
Property p3 = m.createProperty(XmlParser.NS + "hasData");

r.addProperty(p, "somedata");
r.addProperty(p2, "somedata2");
r.addProperty(p3, "somedata3");

m.write(System.out);
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1 Answer

  1. Editorial Team

    Creating a Resource from a model doesn’t automatically add it to that model. I generally add triples to a model via one of the add methods of the Model class:

        String NS = "http://example.com/test#";
    Model m = ModelFactory.createDefaultModel();
    Resource r = m.createResource("http://meetup/nyc");

    Property p = m.createProperty(NS + "hasData");

    m.add(r, p, "somedata");
    m.add(r, p, "more data");

    m.write(System.out);

    This will create:

    <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
           xmlns:j.0="http://example.com/test#" > 
     <rdf:Description rdf:about="http://meetup/nyc">
         <j.0:hasData>more data</j.0:hasData>
         <j.0:hasData>somedata</j.0:hasData>
      </rdf:Description>
   </rdf:RDF>
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