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From Dain Sundstrom <>
Subject Re: Generation of entity classes
Date Mon, 01 Jan 2007 05:19:18 GMT
Actually, never mind.  Due to the interconnectedness of persistent  
classes (i.e., relationships), I need to generate all the classes at  
once and add them all to the class loader at the same time.  This  
means my "elegant" solution is just broken :)


On Dec 31, 2006, at 3:12 PM, Dain Sundstrom wrote:

> I working on an implementation of the EJB cmp specification which  
> uses JPA under the covers to implement the persistence.  I have the  
> basics working with hand written subclasses of the abstract cmp2  
> beans.  I just wrote a code generator to replace my hand coded  
> subclasses using ASM (which rocks), and I am having problems  
> getting OpenJPA to enhance my generated class.  It appears that at  
> the moment I construct the EMF all entity classes must be available  
> via the temp class loader.  If they are not, OpenJPA will not add  
> an entry into the MetaData repository.  Later when I generate my  
> class and load it, the OpenJPA transformer looks for the MetaData  
> in the repository, doesn't find it, and completely skips  
> enhancement (PCEnhancer line 322).  It is possible to have the  
> enhancer fault load the metadata and continue with enhancement?
> In the mean time, I'm going to hack OpenEJB to kick off generation  
> very early in deployment, but it would be much more elegant to wait  
> until the EJB is deployed to generate the classes and this happens  
> after JPA is initialized.
> Thanks,
> -dain

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