Umar; the following query will get all subclasses of owl:Thing. If
you want subclasses of some other class, just replace owl:Thing with
the URI of the class.
SELECT ?cls
WHERE
{ ?cls rdfs:subClassOf* owl:Thing .
}
If you don't want to include owl:Thing in the results, use '+' instead
of '*'.
Both TopBraid Composer and Ensemble provide out-of-the-box components
to display subclass trees. Ensemble runs in a J2EE application
server. See http://www.topquadrant.com/products/TB_Ensemble.html, and
you can display tree structures of any object property. Enterprise
Vocabulary Net (http://www.topquadrant.com/solutions/
ent_vocab_net.html) display tree structures for SKOS vocabularies.
-- Scott
On Feb 10, 5:56 am, umar farooq <[email protected]> wrote:
> Hello everyone,
> I want to show all classes of ontology in tree
> form in web based J2EE application. So i have some confusions. What
> would be sparql query for that and how to iterate the data to show the
> results in tree form..
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