Multiple validation options in Annotation

Question

My question is a branch of of this one.

I have a Annotation (say phone annotation) that I want to validate. I can use @phone validator to check if a phone object is valid or not. I want to also be able to place this validator on a contact information object that contains a phone. Is there a way to use multiple validators for one annotation so I can use @phone for my phone object and my contact information object?

Would something like
@Constraint(validatedBy = {PhoneIsValid.class, PhoneIsValid2.class})
work? (The idea being one Validator handles the phone object and the other handles the contact information object.)

Do you mean that BOTH the validators must return true for the value to be valid? — lrkwz
– lrkwz, Commented Jan 29, 2021 at 16:39

matthias · Accepted Answer · 2021-05-20 04:46:03Z

7

It is possible to have multiple validators for the same annotation type. As you mentioned, you have define all of them in the @Constraint annotation.

Annotaion:

@Documented
@Target({ ElementType.ANNOTATION_TYPE, ElementType.FIELD })
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = { ValidPhonePhoneValidator.class, ValidPhoneContactValidator.class })
public @interface ValidPhone {

  String message() default "";
  Class<?>[] groups() default { };
  Class<? extends Payload>[] payload() default { };
}

Validator1:

public class ValidPhonePhoneValidator implements ConstraintValidator<ValidPhone, Phone> { ... }

Validator2:

public class ValidPhoneContactValidator implements ConstraintValidator<ValidPhone, Contact> { ... }

edited May 20, 2021 at 4:46

answered May 7, 2013 at 10:00

matthias

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4 Comments

SyntaxRules Over a year ago

Thanks, I checked it and it works for me. The annotations go to the proper class for validation.

Black Diamond Over a year ago

ConstraintValidator<A extends Annotation, T>. How are object Phone and Contact of type Annotation?

matthias Over a year ago

@AdiV you’re right. The validator definitions were wrong. I updated them.

Bancarel Valentin Over a year ago

That does not work for me; I get this error: HV000150: The constraint NirValidator defines multiple validators for the type NirResource: NirCalculCleConstraint, NirBrutLongueurConstraint. Only one is allowed.

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