[hibernate-issues] [Hibernate-JIRA] Commented: (HV-466) Avoid repeated validation of constraints in certain type hierarchies

[Kevin Pollet (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HV-466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=42116#action_42116 ] 

Kevin Pollet commented on HV-466:
---------------------------------

Ok I see.
Sounds good to me :)

> Avoid repeated validation of constraints in certain type hierarchies
> --------------------------------------------------------------------
>
>                 Key: HV-466
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-466
>             Project: Hibernate Validator
>          Issue Type: Bug
>          Components: engine
>            Reporter: Gunnar Morling
>            Priority: Minor
>             Fix For: 4.x
>
>
> Let there be the following type hierarchy where the same interface is implemented by two types in an inheritance hierarchy:
> {code:java}
> public interface A {
> 		
> 	@NotNull
> 	String getA();
> }
> 	
> public class B implements A {
> 	public String getA() {
> 		return null;
> 	}
> }
> public class C extends B implements A {
> 		
> }
> {code}
> When validating an instance of {{C}} the {{@NotNull}} constraint on {{A#getA()}} is evaluated twice when traversing the type hierarchy of {{C}} in {{ValidatorImpl}}.
> This seems to be against the BV spec. which says in chapter 3.5: 
> {quote}
> Note that this [algorithm] implies that a given validation constraint will not be processed more than once per validation.
> {quote}

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