[bv-dev] Re-definition of default group sequences in inheritance hierarchies

[Hardy Ferentschik]

Hi,

The isolation of the group sequence is captured in this discussion [1] and this HV issue [2]

--Hardy

[1] http://lists.jboss.org/pipermail/hibernate-dev/2009-May/003891.html
[2] https://hibernate.onjira.com/browse/HV-164

On 8 Jan 2012, at 1:15 PM, Gunnar Morling wrote:

> Hi experts,
> 
> I've got a question regarding the re-definition of default group sequences in inheritance hierarchies, more specifically about the test method GroupSequenceIsolationTest#testCorrectDefaultSequenceInheritance3() in the TCK [1].
> 
> There are the following two classes and validation groups defined:
> 
> @GroupSequence({ Minimal.class, A.class })
> public class A {
> 
>     @Max(value = 10, groups = Minimal.class)
>     int size;
> 
>     @Size(max = 20)
>     String name; //A group
> }
> 
> interface Minimal {}
> 
> interface Heavy {}
> 
> public class B3 extends A {
> 
>     @SafeEncryption(groups = Heavy.class)
>     String encryptionKey;
> 
>     @Size(max = 20)
>     String nickname;
> }
> 
> The test looks like this:
> 
> B3 b = new B3();
> 
> //all values invalid
> b.name = "this name is too long";
> b.nickname = "and this nickname as well";
> b.size = 20;
> b.encryptionKey = "not safe";
> 
> Set<ConstraintViolation<B3>> violations = validator.validate( b );
> assertCorrectNumberOfViolations( violations, 2 );
> assertCorrectConstraintTypes( violations, Max.class, Size.class );
> assertCorrectPropertyPaths( violations, "size", "nickname" );
> 
> So, based on the assertions, the re-defined default group sequence only applies to the constraints defined on A but not on those defined on B3.
> 
> I'm wondering why that is. Intuitively I would have expected that the re-definition of the default group applies to all types of the hierarchy, so one can re-define the default group at the top of an inheritance hierarchy.
> 
> Does anyone know/remember why the behavior is defined like it is?
> 
> Thanks,
> 
> --Gunnar
> 
> [1] https://github.com/beanvalidation/beanvalidation-tck/blob/master/tests/src/main/java/org/hibernate/beanvalidation/tck/tests/constraints/groups/groupsequenceisolation/GroupSequenceIsolationTest.java#L134
> 
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