Hi,
i have a followed many to many (example) association:

---------------- --------------------------- ----------------------
| ITEM | | ITEM_CATEGORY | | CATEGORY |
---------------- -------------------------- ----------------------
| item nb. 1 | | item nb.1 / cat nb.1 | | category nb. 1 |
---------------- -------------------------- -----------------------
| item nb. 2 | | item nb.1 / cat nb. 2 | | category nb. 2 |
---------------- --------------------------- ----------------------
| item nb. 3 | .............
----------------

I wont retrive items which belong do category nb.1 AND category nb.2

If i have criteria:

Criteria crit = sess.createCriteria(ITEM.class);
crit.createAlias("categories", "cat");

so i have above drawn situation.

If item have to belong to cat1 or cat2 everyting is easy: i use Disjunction
But in my situation i can't use Conjunction (or a few restrctions) beacouse this is not what I mean

Thank for any tips

any idea?