AbstractColumn should have
public abstract Object getFilterExpression();
public abstract Boolean isFilterExpression();
found during migrating of the modifiable model sample from 3.3.x to arrangeable model from 4.x
With that issue convinient DB filtering in custom model not looks possible(at least without some additional parameters which are not looks good when we already have special expression attribute) for that sample with hibernate and criteria's.
Discussed with Konstantin - he agree with that and I really vote for it to be made in near time (we really need to push our advanced models)
If need I could do all necessary checks and apply that as I really wanted to show such more advanced sample for the book too.