Criteria crit = new Criteria();
crit.addLessOrEqualThan("groupId", new Integer(5));
QueryByCriteria q = QueryFactory.newQuery(ProductGroup.class, crit);
q.addOrderByDescending("groupId");
q.addPrefetchedRelationship("allArticlesInGroup");
Collection results = myPB.getCollectionByQuery(q);
assertEquals("Number of ProductGroups", 5, results.size());
Collection articles = new ArrayList();
for (Iterator it = results.iterator();it.hasNext();)