Hibernate Validator method or constructor validation

Question

How can I use Hibernate validator to validate the arguments inside the constructor or method? I want the validation to occur before the ValueObject creation so I can throw a

Answer 1

You can do like this with hibernate validator using refection to validate the arguments:

public class PersonTest {

private static ExecutableValidator executableValidator;

@BeforeClass
public static void setUp() {
    ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
    executableValidator = factory.getValidator().forExecutables();
}
@Test
public void test() throws NoSuchMethodException {
    Constructor constructor = 
           Person.class.getConstructor(String.class, String.class, int.class);

    Set> violations = 
         executableValidator.validateConstructorParameters(constructor, new Object[]{null, "", 12});
         assertEquals(2, violations.size());
    }
}