Hi Dhomas,
On 06/06/12 04:07, DHOMAS HATTA FUDHOLI wrote:
The code that I tried to write like the following :
-----
.......
OntModel m = ModelFactory.createOntologyModel();
m.read(input_filename);
DatatypeProperty dp = m.getDatatypeProperty(URI+"usd");
ExtendedIterator<Restriction> i = m.listRestrictions();
while (i.hasNext()){
Restriction r = i.next();
if (r.onProperty(dp)&& r.isMaxCardinalityRestriction()){
com.hp.hpl.jena.rdf.model.Property opt = r.getOnProperty();
r.removeOnProperty(opt);
}
}
As Chris said, the root problem you have:
> java.util.ConcurrentModificationException
is because you are modifying a collection that you are also iterating
over. However, I'm not sure what you're trying to achieve by just
removing the onProperty relation from the restriction. What you said you
wanted to do was remove the entire restriction; just removing the
onProperty will not do that.
A better approach would be (note: untested code):
OntModel m = ModelFactory.createOntologyModel();
m.read(input_filename);
List<Restriction> restrictionsToRemove = new ArrayList<Restriction>();
DatatypeProperty dp = m.getDatatypeProperty(URI+"usd");
ExtendedIterator<Restriction> i = m.listRestrictions();
while (i.hasNext()){
Restriction r = i.next();
if (r.onProperty(dp)&& r.isMaxCardinalityRestriction()){
restrictionsToRemove.add( r );
}
}
for (Restriction r: restrictionsToRemove) {
r.remove();
}
Ian
