Checking service availability given proxy

[SlowStrider]

Is there an easy way to detect whether or not the underlying service of an osgi:reference bean is available without having to register as a listener? For example casting to Spring's proxy interface and calling a method isBound or something?

This would be useful for initially disabling a user interface element when using Spring-DM on the client side (Eclipse RCP).

[andypiper]

((ImportedOsgiServiceProxy)yourRef).getServiceRefe rence().getTargetServiceReference() == null)