Progress ! I have all the tests in xdbm working but one (a failure on assertEquals( 0, rdn6.compareTo( rdn7 ) ); where rdn6 -> ParentIdAndRdn<00000000-0000-0000-0000-000000000002, 'cn=test+sn=small'>[nbC:0, nbD:0] and rdn7 -> ParentIdAndRdn<00000000-0000-0000-0000-000000000002, '2.5.4.4= Small + 2.5.4.3 = TEST '>[nbC:0, nbD:0], so basically it's a bug in the RDN compareTo method).
This is critical because xdbm is the core for all the partitions, and this is where we leverage the underlaying database. This module's tests are usingthe AvlPartition, which is not impacted at all by any changes made in the API. I'm confident that this is the key to get the server working with the new API. I still have some changes to do. Typically, we are comparing a normalized key with a key that has to be normalized. The normalized key is provided by the upper layer (the requested) and the other key comes from the index. Now, when we add a tuple in the index, we always provide a normalized key, so we also store this normalized key. At this point, it makes no sense to re-normalize something that is already normalized (it's a costly operation that involves a String preparation phase). I think we can spare us this kind of costly operation. I'll fix that when I'll have all the tests fixed.
