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https://issues.apache.org/jira/browse/BVAL-167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16674786#comment-16674786
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Francesco Chicchiriccò commented on BVAL-167:
---------------------------------------------

I don't understand why I should by putting {{@NotNull}} on implementation too: 
[1] says:
{quote}
The Bean Validation specification implements the first rule by disallowing 
parameter constraints on methods which override or implement a method declared 
in a supertype (superclass or interface)
{quote}

To me, not repeating the annotation should be interpreted as a confirmation; 
and anyway,  as said above, all works with the reference implementation 
(Hibernate Validator), hence I suspect that this is the way how the 
interpretation should be taken.

[1] 
http://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_single/#section-method-constraints-inheritance-hierarchies

> ConstraintDeclarationException: Illegal strengthening: overridden 
> [constraints] in inheritance hierarchy
> --------------------------------------------------------------------------------------------------------
>
>                 Key: BVAL-167
>                 URL: https://issues.apache.org/jira/browse/BVAL-167
>             Project: BVal
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Francesco Chicchiriccò
>            Priority: Major
>             Fix For: 2.0.1
>
>
> I am trying to upgrade BVal to 2.0.0 in Syncope.
> I have changed my POMs as follows:
> * javax.validation:validation-api from 1.1.0.Final to 2.0.1.Final
> * org.apache.bval:bval-jsr from 1.1.2 to 2.0.0
> When I try to reach up some of the REST services (based on CXF 3.2), an 
> [exception|https://paste.apache.org/hxvY] is thrown; I have read about such 
> exception, but it seems to me that the mentioned methods in 
> [interface|https://github.com/apache/syncope/blob/2_1_X/common/rest-api/src/main/java/org/apache/syncope/common/rest/api/service/AnyService.java#L70]
>  and 
> [implementation|https://github.com/apache/syncope/blob/2_1_X/core/rest-cxf/src/main/java/org/apache/syncope/core/rest/cxf/service/AbstractAnyService.java#L68]
>  should comply with hierarchy rules.
> Nevertheless, if I swap
> org.apache.bval:bval-jsr:2.0.0
> with
> org.hibernate.validator:hibernate-validator:6.0.13.Final
> all is working fine.



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