What I would like to do is remove this from orm.xml and then programatically enable the functionality when I detect that it is necessary.
We do use Spring ORM 3.0.3 (with org.springframework.orm.jpa.LocalContainerEntityManagerFacto ryBean to make entity manager factory available). It is not clear to me if the solution is in EclipseLink or Spring to be honest, but after a fair amount of poking around the source nothing leaps out.
Any pointers are greatly appreciated. Thanks much.