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can I override a jsr-303 validation annotation

I have a test like below:

public class TestSizeAnnotation
{
    public static void main(String[] args)
    {
        System.out.println(Validation.buildDefaultValidatorFactory().getValidator().validate(new C()));
    }

    public static class P
    {
        private List<String> lst = newArrayList("AA");
        @Size(max=0, message="P")
        public List<String> getLst()
        {
            return lst;
        }

        public void setLst(List<String> lst)
        {
            this.lst = lst;
        }
    }

    public static class C extends P
    {
        @Override
        @Size(max=5, message="C")
        public List<String> getLst()
        {
            return super.getLst();
        }
    }
}

with the following output:
[ConstraintViolationImpl{interpolatedMessage='P', propertyPath=lst, rootBeanClass=class com....validator.TestSizeAnnotation$C, messageTemplate='P'}]

However, I expected that the annotation can @Size be overridden, and no warning will appear.
Is there a way to accomplish that?

EDIT: I found a bug seems related to that, but I run 4.2.0 final and still get the above behavior.

like image 373
oshai Avatar asked Jan 30 '12 16:01

oshai


1 Answers

Overriding validation annotations is actually not supported for JSR-303. Instead annotations on overridden methods in the subclass will be applied cumulatively: From section 3.3 of the specification:

A constraint declaration can be placed on an interface. For a given class,
constraint declarations held on super- classes as well as interfaces are
evaluated by the Bean Validation provider. Rules are formally described in
Section 3.4.5.

The effect of constraint declarations is cumulative. Constraints declared
on a superclass getter will be validated along with any constraints defined
on an overridden version of the getter according to the Java Language
Specification visibility rules.
like image 132
Perception Avatar answered Oct 23 '22 05:10

Perception