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From Craig L Russell <Craig.Russ...@Sun.COM>
Subject Re: classloader for JDO classes
Date Wed, 11 Jan 2006 01:08:18 GMT
Hi Erik,

No, this is not ok.

The problem is for example when the application calls  
pm.makePersistent(employee). If the jdoimpl does a check (if (! o  
instanceof PersistenceCapable) throw JDOUserException("Object was not  
enhanced");) then the different classes will be an issue. The  
PersistenceCapable in the 2nd jar is not the same class as in the 1st  
jar even though they have the same name.

Have you tried it?

Craig

On Jan 10, 2006, at 4:09 PM, erik@jpox.org wrote:

>
>
> Hi,
>
> An app has two classloaders, the 1st with jdoimpl.jar+jdo2.jar and  
> the 2nd with
> persistent classes +jdo2.jar.
>
> The PCclass links to jdo2.jar(2) and the jdoImpl links to jdo2.jar 
> (1). I guess
> that's ok, right? In any case, it may worth mentioning that in the  
> spec.
>
> Regards,
>
> Erik Bengtson

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!


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