Hi all, I am new to the list and I am opening this thread on Emmanuel Bernard's suggestion, in order to discuss some possible extensions to the validator (jsr 303) I have been working on with a couple of collegues. Mainly it concerns the possibility to extend composition with boolean operators (ex.: A field is either in the range 1-10 OR 20-30 AND notNull) and allow validation of sets of interdependent properties (ex.: EITHER the name field is notNull OR the surname field is notNull/ AT LEAST 1 field must be filled/etc....). A description of the experimental framework we implemented can be found here http://www.ii.uib.no/publikasjoner/texrap/pdf/2009-389.pdf , and some further discussion on the choices we made here http://www.ii.uib.no/~federico/papers/Annotations.pdf. I hope this might be of some interest for the Hybernate Validator project, but, even if not, it would be nice to get some feedback. Thanks, Federico Mancini