Hi all!
I'm trying to develop a plugin to interact with Jena (
http://jena.sourceforge.net
), a semantic web framework.
I
developed the plugin as I documented it in the plugin development
tutorial. I have a hello() method which works perfectly. however when I
try to call this method:
public List<String> test1(){
Vector<String> uris = new Vector<String>();
OntModel model = ModelFactory.createOntologyModel(OntModelSpec.RDFS_MEM_RDFS_INF, null );
model.read("
http://www.dcs.shef.ac.uk/~zzc05jb/environmentOntology/pollutionInventory.rdfs
");
model.read("
http://www.dcs.shef.ac.uk/~zzc05jb/environmentOntology/instances/disposalRecoveryMethods.rdf
");
Iterator iter =
model.listIndividuals();
while(iter.hasNext()){
OntResource ontClass = (OntResource)iter.next();
uris.add(ontClass.getURI());
}
return uris;
}
I get this exception:
Error number 4001 in 4: Error while parsing velocity page
Tests.OntologyPlugin Wrapped Exception: Invocation of method 'test1' in
class secoia.plugin.OntologyPluginApi threw exception class
java.lang.NoSuchFieldError : actualValueType
I can't really make sense of it. This method works if i use it form a
classic Java application. I copied all the Jena jar files to the
webapps/xwiki/WEB-INF/lib directory. Moreover, I don't know where this
actualValueType comes from. Does it come from XWiki?
Any clue on this problem?
Thanks a lot!