[DS] Likely mistake in response to a service being unavailable

[David Jencks <da...@yahoo.com>]

Immediate components currently behave a little differently to delayed components and I think this is wrong.

If a required dependency cannot be obtained from a service reference during initial activation, currently the immediate component will change state to unsatisfied.  However, delayed components where getService encounters the same situation will remain registered.

I think immediate components should behave the same as delayed here and remain in the registered state.  If the required service shows up later then a call to getService will in fact create the object, just like for delayed components.  If the component state changes to unsatisfied, then the service will be unregistered and no one will be able to even try calling getService to find out if the required dependency is now available.

If the reason the required dependency could not be obtained from its' service reference is that it was being deactivated and unregistered, then a service event will be along soon to deactivate the component we are talking about.  There's no need to guess at the cause of the missing service.

thoughts?

many thanks
david jencks