On May 11, 2004, at 8:58 AM, Tore Halset wrote:
> I have two enities A, and B with a flattened many to many
> relationship. I want to query for all A's that has at least one
> related B.
> Something like this:
> Expression qual = Expression.fromString("not bArray.empty");
> new SelectQuery(A.class, qual);
> Is it possible? How?
> - Tore.
It was suggested to implement such qualifier some time ago by Giulio
Cesare Solaroli. It hasn't been done yet, though I like the idea very
For now you can use a hack to force an inner join over the relationship
that will effectively filter out all A's that have no B's. E.g.
// use a relationship with condition that always evaluates to true
// this will force a join
Expression qual = Expression.fromString("db:bArray.id != null");
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