I'm not sure that I understand all of your questions and I haven't
worked with the Adapter Hook framework, but it sounds to me like you
need to register a service before any of the Entity classes are loaded.
The two ways that seem most obvious to me are:
1) explicitly define some responsible bundle to start first via the
config.ini file with the "osgi.bundles" directive
2) programmatically in the application startup (perhaps a bit more
dangerous)
Does that make any sense, or do I not understand what you are trying to
accomplish.
Thanks for your response. I'm really looking forward to seeing this work.