[hibernate-issues] [Hibernate-JIRA] Resolved: (HV-257) ReflectionHelper.getValue fails to retrieve values from methods defined on a parent interface

[Hardy Ferentschik (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HV-257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hardy Ferentschik resolved HV-257.
----------------------------------

       Resolution: Fixed
    Fix Version/s: 4.0.1

Added a fix to ReflectionHelper.setAccessibility.
Now we also call setAccessible in case of public abstract members. If you proxy an interface using java.lang.reflect.Proxy
per default you will get a IllegalAccessException since you are not allowed to access abstract methods.
Seems odd. One could argue that the proxy 'is' the implementation for the interface method and hence they
should be accessible. Maybe this is a JVM bug !?

> ReflectionHelper.getValue fails to retrieve values from methods defined on a parent interface
> ---------------------------------------------------------------------------------------------
>
>                 Key: HV-257
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-257
>             Project: Hibernate Validator
>          Issue Type: Bug
>          Components: validators
>    Affects Versions: Bundle 3.2.1, 3.0.0.ga, 3.1.0.CR1, 3.1.0.CR2, 3.1.0.GA, 4.0.0.Alpha1, 4.0.0.Alpha2, 4.0.0.Alpha3, 4.0.0.Beta1, 4.0.0.Beta2, 4.0.0.Beta3, 4.0.0.CR1, 4.0.0.GA
>         Environment: hibernate-validator 4.0.0.CR1
>            Reporter: Amir Kibbar
>             Fix For: 4.0.1
>
>         Attachments: validator-test-case.tar.gz
>
>
> I've defined an interface A with method foo with a constraint annotation on it.
> I've then defined an interface B that extends interface A.
> I've created a proxy (invocation handler) that implements interface B at runtime.
> When I try to validate the proxy object I get an IllegalAccessException because the modifier on the method the ReflectionHelper.getValue() is trying to invoke has the "public abstract" modifiers.
> This can easily be solved if the getValue() will set method.setAccesible(true) before attempting to invoke it (and then reset it to the previous value obviously).
> thanks,
> Amir

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