Configuring the validator provided to #Valid for message interpolation - jax-rs

Question

I'm using the hibernate validator:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.1.2.Final</version>
</dependency>
In my unit test, it works just fine using it this way:
private static Validator validator;
validator = ValidatorProvider.getInstance().getValidator();
with the validator being configured for message interpolation:
public class ValidatorProvider {
static ValidatorProvider INSTANCE;
Validator validator;
private ValidatorProvider() {
CustomMessageInterpolator messageInterpolator = new CustomMessageInterpolator();
ValidatorFactory validatorFactory
= Validation.byProvider(HibernateValidator.class).configure()
.messageInterpolator(messageInterpolator).buildValidatorFactory();
validator = validatorFactory.getValidator();
}
public static ValidatorProvider getInstance() {
if (INSTANCE == null) {
INSTANCE = new ValidatorProvider();
}
return INSTANCE;
}
public Validator getValidator() {
return validator;
}
}
The above singleton is not being used by the integration tests.
Now, in my REST controller, I only have the #Valid annotation:
#Valid Answer answer
For now, the following message:
javax.validation.constraints.Pattern.message=The "{0}" value must match "{regexp}".
is not interpolated when used in the integration test.
How can I tell the above #Valid annotation that it should use my configured validator ?

Answer 1

Which REST framework are you using? Depending on the specific implementation it may be possible to inject a ValidatorFactory in one way or another.
The simplest though would be to not bootstrap the validator yourself, but rather let the REST framework do it, applying the configuration from META-INF/validation.xml (the "default validator factory"). You can set message interpolators and many other things in that XML file and constraint mapping files which it may include.