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https://issues.apache.org/jira/browse/SLING-2708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13550915#comment-13550915
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Felix Meschberger commented on SLING-2708:
------------------------------------------

> Note that:
> ResourceUtil.isA(resource, "some/type") == true
> but
> ResourceUtil.isA(typeA.resource, "some/type") == false
> (unless user is admin)

The only explanation I can come up with for this behaviour is that resource and 
typeA.resource are not the same. Can you find out, what resources these are ?

Also: What exactly does your AdapterFactory do ? I would assume the 
AdapterFactory just does a "new TypeA(resource)" for the resource given to 
adapt. If not, this might explain the behaviour.
                
> ResourceUtil.isA() fails for adapted Resources unless user is admin
> -------------------------------------------------------------------
>
>                 Key: SLING-2708
>                 URL: https://issues.apache.org/jira/browse/SLING-2708
>             Project: Sling
>          Issue Type: Bug
>          Components: ResourceResolver
>            Reporter: Tyson Norris
>
> Summary - adapting a Resource to a specified type, loses the ability to test 
> the Resources super types using ResourceUtil.isA(), UNLESS user is admin
> 1. TypeA is defined as:
> class TypeA {
>     private Resource res;
>     public boolean isTypeB(){
>         return ResourceUtil.isA(res, "some/type");
>     }
> }
> 2. TypeA adapter is an AdapterFactory to adapt Resource -> TypeA
> 3. /some/res/path is a resource whose sling:resourceSuperType 2 levels up is 
> "/apps/some/type"
> 4. In a JSP, we use code like:
> TypeA typeA = resource.adaptTo(TypeA)
> if (!typeA.isTypeB()){
>     //FAIL: typeA.isTypeB() is actually true
> }
> Note that:
> ResourceUtil.isA(resource, "some/type") == true
> but
> ResourceUtil.isA(typeA.resource, "some/type") == false
> (unless user is admin)

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