Spring Autoincrement in validator for Dropwizard

I am using the Validator API to validate my Dropwizard resources.

At this point I need to create my own ConstraintValidator, but my validator needs to be able to connect to the database.

To handle this, I use @Autowire inside my custom ConstraintValidator to expose my customized beans (database).

public class CustomValidator implements ConstraintValidator<CustomAnnotation, String> {

    @Autowired private ApplicationContext applicationContext;

    @Override
    public void initialize(final CustomAnnotation customAnnotation) {
    }

    @Override
    public boolean isValid(final Optional<String> value, final ConstraintValidatorContext context) {
        applicationContext.getApplicationName();
        return true;
    }
}

      

        
        
        
      

    

To get autwiring to work with the validator, I believe I need to use "LocalValidatorFactoryBean".

I configured mine as such:

final LocalValidatorFactoryBean factory = new LocalValidatorFactoryBean();
factory.setApplicationContext(applicationContext); // preconfigured with my beans
factory.afterPropertiesSet(); // seems to perform the setup of the ConstraintValidatorFactory with applicationContext.getAutowireCapableBeanFactory()

      

        
        
        
      

    

Dropwizard comes with a pre-configured validator in the Environment object.

So, in order for Dropwizard to use a customized Spring validator with injection, I set up the environment with LocalValidatorFactoryBean like this: -

environment.setValidator(factory);

      

        
        
        
      

    

However, rather disappointingly, my @Autowired private ApplicationContext ApplicationContext from my CustomValidator still appears to be null.

Does anyone know where I am going wrong or if there is an easier way?

Edit A bit more information on how this was done.

Ask this in my application: -

final ValidatorFactory constraintValidatorFactory = // custom validator factory
final ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
jerseyEnvironment.register(new ValidationConfigurationContextResolver(constraintValidatorFactory, factory));

      

        
        
        
      

    

Then this class replaced the desired validator: -

public class ValidationConfigurationContextResolver implements ContextResolver<ValidationConfig> {

   private final ConstraintValidatorFactory constraintValidatorFactory;
   private final ValidatorFactory factory;

   public ValidationConfigurationContextResolver(final ConstraintValidatorFactory constraintValidatorFactory,final ValidatorFactory    factory) {
       this.constraintValidatorFactory = constraintValidatorFactory;
       this.factory = factory;
   }

   @Override
   public ValidationConfig getContext(final Class<?> type) {
       final ValidationConfig config = new ValidationConfig();
       config.messageInterpolator(factory.getMessageInterpolator());
       config.constraintValidatorFactory(constraintValidatorFactory); // custom constraint validator factory
       config.parameterNameProvider(factory.getParameterNameProvider());
       config.traversableResolver(factory.getTraversableResolver());
       return config;
   }

      

        
        
        
      

    

}