BeanValidation - Error Message

[Dominik Müller]

Hi There,

in my project, i implement a custome Validator (JSR303)

public class EANValidator implements ConstraintValidator<EAN, String>
{

....

  @Override
  public boolean isValid(String t, ConstraintValidatorContext cvc)
  {
     //Validate...
  }
  
  
}

The Problem: the Validator invoke an external system to do the validation, which returns an important error message on failure.

The Question: How do i process a dynamic error message, generated by the validator itself, to the invoking process?

Thanks a Lot
Dominik Müller

[Dominik Müller]

The Answer on my question.

In error case: disable the default constraint and create and add a custome one

  @Override
  public boolean isValid(String t, ConstraintValidatorContext cvc)
  {
      boolean valid=...do some validation...
      if (valid)
      {
        return true;
      }
      else
      {

        cvc.disableDefaultConstraintViolation();
        ConstraintViolationBuilder violationBuilder = cvc.buildConstraintViolationWithTemplate("Some generated Message");
        NodeBuilderDefinedContext nbdc = violationBuilder.addNode("EAN");
        nbdc.addConstraintViolation();

        return false;
      }

    }
  }