[hibernate-dev] Behaviour of validation mode "auto" in case of error during validator factory bootstrap

Hi, JPA defines for validation mode "auto" that bean validation must occur if a BV provider is present and that no validation shall occur otherwise. What should happen though if a BV provider such as HV is present but it fails to bootstrap? In case of HV this happens if no expression language implementation can be found. Currently, the user has a very hard time to find out about this, as this exception essentially is suppressed (for mode "callback" the exception is raised). Should we raise a specific exception in HV if it cannot be bootstrapped? In ORM, we could handle that one specifically and raise it also if for validation mode "auto" (would have to happen reflectively, though, as to avoid a hard dependency). I can do this change but first wanted to make sure that this is inline with what you all think should be done. Thanks, --Gunnar