[hibernate-dev] EJB3/Hibernate/JBoss Cache intergration broken in EJB3 trunk

[Christian Bauer]

On Jul 2, 2007, at 4:58 PM, Brian Stansberry wrote:

> FYI, there are a bunch of EJB3 clustered entity test failures in AS  
> trunk due to a bad interaction between Hibernate 3.2.4.SP1 and  
> JBoss Cache 2.0.0.  Basically, this is a temporary mismatch between  
> Hibernate and JBC. There's work in Hibernate Core's trunk for the  
> 3.3 release that can let us resolve this, but for now the tests are  
> going to fail.
>
> Problem is the integration layer ends up calling the JBC  
> putForExternalRead() method when it needs to cache something in the  
> "UpdateTimestampsCache".  JBC treats a calls to this method as a no- 
> op if the cache node in question already exists.  This is new  
> behavior in JBC 2.0.  It's the necessary and intended behavior when  
> the method is called for caching entities and collections.  But  
> when it's called for the UpdateTimestampsCache, it causes problems.  
> The Hibernate 3.3. codebase gives us the flexibility to call a  
> different method for the UpdateTimestampsCache call; to fix the  
> problem we need determine the exact behavior we want for the  
> UpdateTimestampsCache call and make the appropriate call to JBC.

Can we put this on the JBoss Cache/Hibernate wiki page with a final  
conclusion and guidelines for current users of both?