Hibernate + CloudSQL = javax.naming.NamingException

[fabio.bozzo]

Hi I am trying to use Spring + Hibernate for working with GAE+CloudSQL.

A 500 error broke my app: java.lang.NoClassDefFoundError: javax/naming/NamingException

I know javax.naming package is off-limits on AppEngine, but.... how can I get a workaround? 

Hibernate breaks on SessionFactoryImpl, at this method:

public Reference getReference() throws NamingException {

log.debug("Returning a Reference to the SessionFactory");

return new Reference(

SessionFactoryImpl.class.getName(),

   new StringRefAddr("uuid", uuid),

   SessionFactoryObjectFactory.class.getName(),

   null

);

}

It's not my code. How can I make it work?