Reusing HibernateValidatorConfiguration

rsigal@redhat.com · **Joined:** Sat Mar 17, 2012 1:33 pm **Posts:** 7

Is HibernateValidatorConfiguration meant to be reusable? Before I realized that org.hibernate.validator.engine.ValidatorImpl implemented both Validator and MethodValidator, I tried to do this:

Code:

      HibernateValidatorConfiguration config = Validation.byProvider(HibernateValidator.class).configure();
      Validator validator = config.buildValidatorFactory().getValidator();
      MethodValidator methodValidator = config.buildValidatorFactory().getValidator().unwrap(MethodValidator.class); // Yeah, it doesn't make much sense to do this, does it, but anyway ...

and I got a NPE because ConfigurationImpl.buildValidatorFactory() resets validationBootstrapParameters, losing the previous value of validationBootstrapParameters.getProvider().

Just wondering.

-Ron

Gunnar · **Joined:** Sat Jan 24, 2009 12:46 pm **Posts:** 388

Hi Ron,

That's a good question. I had a quick look at the spec and the API documentation of javax.validation.Configuration, and it seems to me that this ist currently not clearly specified. I posted the question to the BV EG mailing list, let's see what the other folks think. Personally I think it might make sense to allow such a usage, at least we have to make clear whether it's allowed or not.

For your specific example you just should unwrap the validator instance as you said, as otherwise the constraint meta-model would be instantiated twice in the two factories.

--Gunnar

rsigal@redhat.com · **Joined:** Sat Mar 17, 2012 1:33 pm **Posts:** 7

Thanks, Gunnar. Wow, you're faster than I am on the mailing lists. ;)

-Ron