Re: [bv-dev] Legal to validate constraints more than once?
On 21 Jan 2013, at 3:36 PM, Gunnar Morling <gunnar(a)hibernate.org> wrote:
I'm wondering whether it's legal that one constraint gets
validated more than once during one validation operation. The spec seems a bit
contradictory in this regard.
In section 4.6 "Validation routine" [1] it says:
"[...] this implies that a given validation constraint will not be processed more
than once per validation."
Section 4.6.1 "Object graph validation" says though:
"[...] object graph navigation can lead to multiple validations of the same
constraint and the same object instance but the set of constraint validation is
deterministic and the algorithm prevents infinite loops."
What is right here? Or is this to say that *only* during graph validation a constraint
may be validated multiple times but not e.g. during validation of multiple groups, all of
which a constraint is part of?
If you are just validating a single bean every constraint can only be validated once.
However, when you are dealing with object graphs a constraint can be validated once per
path on which you reach it.
So both sentences make sense in their context, but taken together there seems to be a
contradiction. Maybe the first statement could just be removed?
--Hardy