Hello,
I am trying to create a Ontology Model (OntModel) with the OWL model
specification but I get an error.
Specifically when I run the following code:
OntModel m = ModelFactory.createOntologyModel( OntModelSpec.OWL_MEM );
I get the Error:
javax.servlet.ServletException: Servlet execution threw an exception
java.lang.NoClassDefFoundError: org/apache/xerces/util/XMLChar
com.hp.hpl.jena.rdf.model.impl.Util.notNameChar(Util.java:121)
com.hp.hpl.jena.rdf.model.impl.Util.splitNamespace(Util.java:79)
com.hp.hpl.jena.graph.Node_URI.getLocalName(Node_URI.java:64)
com.hp.hpl.jena.rdf.model.impl.ResourceImpl.getLocalName(ResourceImpl.java:133)
com.hp.hpl.jena.rdf.model.impl.PropertyImpl.checkLocalName(PropertyImpl.java:81)
com.hp.hpl.jena.rdf.model.impl.PropertyImpl.<init>(PropertyImpl.java:89)
com.hp.hpl.jena.rdf.model.ResourceFactory$Impl.createProperty(ResourceFactory.java:245)
com.hp.hpl.jena.rdf.model.ResourceFactory.createProperty(ResourceFactory.java:121)
com.hp.hpl.jena.vocabulary.RDF.property(RDF.java:32)
com.hp.hpl.jena.vocabulary.RDF.<clinit>(RDF.java:45)
com.hp.hpl.jena.ontology.impl.OntResourceImpl.<clinit>(OntResourceImpl.java:63)
com.hp.hpl.jena.enhanced.BuiltinPersonalities.<clinit>(BuiltinPersonalities.java:27)
com.hp.hpl.jena.rdf.model.impl.ModelCom.<init>(ModelCom.java:50)
com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory.java:122)
com.hp.hpl.jena.rdf.model.ModelFactory.createDefaultModel(ModelFactory.java:116)
com.hp.hpl.jena.vocabulary.OWL.<clinit>(OWL.java:37)
com.hp.hpl.jena.ontology.ProfileRegistry.<clinit>(ProfileRegistry.java:48)
com.hp.hpl.jena.ontology.OntModelSpec.<clinit>(OntModelSpec.java:54)
OntologyToModel.importOntology(OntologyToModel.java:91)
LoadSchemas.doGet(LoadSchemas.java:93)
LoadSchemas.doPost(LoadSchemas.java:253)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
I have loaded the xercesImpl-2.9.1.jar and jena-2.6.3.jar (plus other
necessary libs), and I am sure that the class that is not found is in the
xercesImpl-2.9.1.jar library.
Any ideas what the problem could be?
Thank you in advance,
Eva
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