can I override a jsr-303 validation annotation
You can ovveride an annotation configured validation via xml configuration:
http://docs.jboss.org/hibernate/validator/4.2/reference/en-US/html_single/#validator-xmlconfiguration
In your case, if you declare a different validation (or no validation) for the getList() methid in the validation.xml file, it will override the @Size
annotation.
Just for the records, I have found a bypass for my problem:
public class TestSizeAnnotation
{
public static void main(String[] args)
{
System.out.println("c " +
Validation.buildDefaultValidatorFactory().getValidator().validate(new C(), Default.class, SizeGroup2.class));
System.out.println("p " +
Validation.buildDefaultValidatorFactory().getValidator().validate(new P(), Default.class, SizeGroup.class));
}
public static interface SizeGroup {}
public static interface SizeGroup2 {}
public static class P
{
private List<String> lst = newArrayList("AA");
@Size(max=0, message="P" , groups=SizeGroup.class)
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", groups=SizeGroup2.class)
public List<String> getLst()
{
return super.getLst();
}
}
}
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.