Using InjectingConstraintValidatorFactory

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

Hi,

In Resteasy, we call

Code:

ValidatorFactory.class.cast(context.lookup("java:comp/ValidatorFactory"));

to get a CDI aware ValidatorFactory. Recently, we have had a request to support Validation and CDI in Java SE, and I can get an instance of InjectingConstraintValidatorFactory by calling

Code:

                  HibernateValidatorConfiguration config = Validation.byProvider(HibernateValidator.class).configure();
                  ConstraintValidatorFactory cvf = null;
                  try
                  {
                     Class<?> cvfClass = config.getClass().getClassLoader().loadClass("org.hibernate.validator.internal.cdi.InjectingConstraintValidatorFactory"); 
                     if (cvfClass != null)
                     {
                        BeanManager beanManager = CDI.current().getBeanManager();
                        Constructor<?> constructor = cvfClass.getConstructor(BeanManager.class);
                        cvf = (ConstraintValidatorFactory) constructor.newInstance(beanManager);
                        validatorFactory = tmpValidatorFactory = config.constraintValidatorFactory(cvf).buildValidatorFactory();
                     }
                  }

Is there a more elegant, safer way of doing that, maybe by way of a different call to Validation.byProvider()?

Thanks,
Ron

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

Hi Ron,

If the HV portable extension for CDI is present, you should be able to just obtain a ValidatorFactory correctly set up from the BeanManager or even the CDI class itself:

Code:

CDI.current().select(ValidatorFactory.class)

Could you give this a try?

Cheers,

--Gunnar

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

Hi Gunnar,

Thanks for the rapid reply. When I added

Quote:

<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator-cdi</artifactId>
<version>5.3.5.Final</version>
</dependency>

and tried

Code:

   Instance<ValidatorFactory> instance = CDI.current().select(ValidatorFactory.class);
   validatorFactory = tmpValidatorFactory = instance.get();

I got

Quote:

org.jboss.weld.exceptions.UnsatisfiedResolutionException: WELD-001334: Unsatisfied dependencies for type ValidatorFactory with qualifiers

Is that not what you meant?

-Ron

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

Hi Ron,

Yes, that's what I had in mind indeed. Surprised that it doesn't work. Do you maybe have a GitHub branch or something like that somewhere so that we can take a look ourselves?

--Gunnar

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

Thanks,Gunnar. I've committed the latest version to https://github.com/ronsigal/Resteasy/tree/1617. The code I've referred to is in the method getValidatorFactory() in https://github.com/ronsigal/Resteasy/bl ... olver.java.

I've been using the test class https://github.com/ronsigal/Resteasy/bl ... t1617.java to experiment with. It runs with an embedded undertow, so it doesn't need any external setup.

-Ron