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From Sachin Patel <>
Subject Re: help! gbean ref doesn't contain added interfaces
Date Fri, 01 Dec 2006 22:06:14 GMT
Thanks Aaron.. see inline.

On Dec 1, 2006, at 4:20 PM, Aaron Mulder wrote:

> So what you get back is ordinarily a proxy to the actual service.  If
> you get the abstract name for the returned module builder (the kernel
> has a call to do that) and then get a fresh proxy to it (from the
> proxy manager from the kernel), does it include your new interface?

Yes, creating a fresh proxy includes the new interface, but  
unfortunately that only gets me passed the class cast, as it throws  
an exception "No implementation method" when calling a method on the  
interface.  :(

> If so, it suggests that the proxies generated for the reference
> include only the interfaces that match the reference type.

Thats what I assumed, but if I changed the reference type to the new  
interface, then for some reason getWebConfigBuilder() returns null,  
so something was still expecting the referenceType for the builders  
to be ModuleBuilder.class.

> If not, it
> may be that the class loader that's provided to create the proxy
> doesn't include the added interface (though there used to be a warning
> emitted every time this happened).
> I'm not sure what could be done to
> work around that -- maybe either add the interface to other modules as
> needed or contrive to use the right module's class loader to create
> the proxy.
> Thanks,
>     Aaron
> On 12/1/06, Sachin Patel <> wrote:
>> I'm having some trouble figuring out why I'm getting a  
>> ClassCastException
>> and would appreciate if someone could shed some light...
>> In TomcatModuleBuilder I implement an "additional" interface  
>> ModuleBuilder2
>> as well as add..
>> static {
>> ...
>>  infoBuilder.addInterface(ModuleBuilder2.class)
>> ...
>> }
>> But then in EARConfigBuilder if I call...
>> ((ModuleBuilder2) getWebConfigBuilder())
>> I get a ClassCastException casting it to ModuleBuilder2 during the  
>> building
>> of the configs which I don't understand why.  If I inspect the  
>> interfaces of
>> getWebConfigBuilder() it only returns ModuleBuilder and
>> GeronimoManagedGBean.  Why isn't ModuleBuilder2 being listed?
>> I tried updated the referenceType for WebBuilder in  
>> EARConfigBuilder from
>> ModuleBuilder to ModuleBuilder2, but then in that case  
>> getWebConfigBuilder
>> ends up returning null.
>> What am I missing? Why can't I add an additional interface to the
>> TomcatModuleBuilder GBean?
>> Thanks
>> -sachin


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