Major Description
The OSGi Specification describes the service as follows:
This service interface offers JPA clients the ability to create instances of EntityManagerFactory for a
given named persistence unit.
located in org.osgi.service.jpa / JPA Package Version 1.0.
Bundles wishing to use this package must list the package in the Import-Package header of the bundle's
manifest. For example:
Import-Package: org.osgi.service.jpa; version="[1.0,2.0)"
Aries seems not using this package, nor registering any service against this interface.
Preffered solution:
Either include this interface in the base jpa bundle or provide a seperate one and import it to register EntityManagerFactoryBuilder as described in the specification