On Tue, Aug 26, 2008 at 10:54 AM, Alin Dreghiciu <[EMAIL PROTECTED]> wrote: > I have the following test: > > QueryBuilder<Person> qb = qbf.newQueryBuilder( Person.class ); > Male male = templateFor( Male.class ); > qb.where( > isNull( male.wife() ) > ); > Query<Person> query = qb.newQuery( Network.persons() ); > > where Male is a Person and has a wife association. > > The question is: what should happen while executing the query > regarding the fact that the where clause is expressed against an > association that does not exist on all Persons, only on Males. > The RDF indexing behavior is that in the case above all the Persons > that are not Male are considered to match the where clause and for > Males only those that do not have a wife association set.
I think the implicit result of the above is; where( item instanceof Male && isNull( ((Male) item).wife() ) ) and 'item' referring to the entries in the Iterable. Cheers Niclas _______________________________________________ qi4j-dev mailing list [email protected] http://lists.ops4j.org/mailman/listinfo/qi4j-dev
