> the part of OWL file:
Hi there - could you provide
1/ A complete, minimal example. Not fragments.
A small complete datafile.
A small complete program.
In the memory case yo read directly into the ontModel and the TDB case,
you wrap an existing model
2/ In reply to your previous, I asked whether model o had the prefixes.
I ask again: does model 'model' have the prefixes?
Prefixes are merely syntax - they don't affect the RDF triples.
Andy
On 02/12/11 03:04, xh-zh wrote:
> tdb will lose some information about prefix when load data from owl file,
> the same owl file sample.owl, if I create OntModel from sample.owl directly ,
> I can get the prefix decleared in the owl file.
> creating OntModel form owl file:
> OntModelSpec s = new OntModelSpec( OntModelSpec.OWL_DL_MEM );
> s.setDocumentManager( mgr );
> OntModel model = ModelFactory.createOntologyModel(s);
>
> InputStreamReader in;
> try {
> FileInputStream file = new FileInputStream(filePath);
> in = new InputStreamReader(file, "UTF-8");
> System.out.println("begin read");
> model.read(in, null);
> }
> the part of OWL file:
> <?xml version="1.0"?>
> <!DOCTYPE rdf:RDF [
> <!ENTITY foaf "http://xmlns.com/foaf/0.1/";>
> <!ENTITY owl "http://www.w3.org/2002/07/owl#";>
> <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#";>
> <!ENTITY owlapi "http://www.semanticweb.org/owlapi#";>
> <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#";>
> <!ENTITY contact "http://www.w3.org/2000/10/swap/pim/contact#";>
> <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
> <!ENTITY esesgrid
> "http://www.bjut.edu.cn/ontologies/2009/10/esesgrid.owl#";>
> <!ENTITY AccessControl
> "http://www.bjut.edu.cn/ontologies/2009/12/AccessControl.owl#";>
> ]>
> <rdf:RDF xmlns="http://www.bjut.edu.cn/ontology/2011/10/esgrid.owl#";
> xml:base="http://www.bjut.edu.cn/ontology/2011/10/esgrid.owl";
> xmlns:contact="http://www.w3.org/2000/10/swap/pim/contact#";
> xmlns:esesgrid="http://www.bjut.edu.cn/ontologies/2009/10/esesgrid.owl#";
> xmlns:xsd="http://www.w3.org/2001/XMLSchema#";
> xmlns:owlapi="http://www.semanticweb.org/owlapi#";
>
> xmlns:AccessControl="http://www.bjut.edu.cn/ontologies/2009/12/AccessControl.owl#";
> xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#";
> xmlns:foaf="http://xmlns.com/foaf/0.1/";
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
> xmlns:owl="http://www.w3.org/2002/07/owl#";>
> <owl:Ontology
> rdf:about="http://www.bjut.edu.cn/ontology/2011/10/esgrid.owl"/>
>
> but when I load the sample.owl into TDB, and create OntModel from TDB, some
> prefixed will be lost, and only four prefixes can be get with
> OntModel.getNsPrefixMapping().
> Dataset ds = TDBFactory.createDataset(directory);
> model = ds.getDefaultModel();
> ontmodel = ModelFactory.createOntologyModel(
> OntModelSpec.OWL_DL_MEM_TRANS_INF, model);
>
> does tdb only support n-triple well, and the owl file be supported poor?
>
>
>
