[equinox-dev] Extension Registry outside Equinox?

[Michael Greifeneder <mikegr@xxxxxxx>]

Hello, 

I try to find out if the Extension Registry (org.eclipse.equinox.registry) can 
be used outside Equinox? I like the concept and I would like to use it with a 
Swing application. However I have to convince my project partners that we are 
not forced to stick with Equinox, although I don't think we are going to use 
any other OSGI implementation. 

I created a simply test case with Apache Felix and installed 
org.eclipse.equinox.common_3.5.0.v20090119-1830.jar
org.eclipse.equinox.registry_3.4.100.v20081024-1200.jar
org.eclipse.equinox.supplement_1.2.0.v20090127-1630.jar
org.eclipse.equinox.util_1.0.1.v20081205-1800.jar
from 3.5M5

I get this message during start of the registry:

Error:  Could not parse XML contribution for 
"org.eclipse.equinox.registry;singleton:=true//plugin.xml". Any contributed 
extensions and extension points will be ignored.

I tried the same configuration with bundles from release 3.4.2. 
There I got a NullPointerException:
Caused by: java.lang.NullPointerException
org.eclipse.core.internal.runtime.ResourceTranslator.getResourceBundle(ResourceTranslator.java:63)
org.eclipse.core.internal.registry.osgi.EclipseBundleListener.addBundle(EclipseBundleListener.java:172)
org.eclipse.core.internal.registry.osgi.EclipseBundleListener.processBundles(EclipseBundleListener.java:90)
org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.onStart(RegistryStrategyOSGI.java:210)
..

My questions:
Is it possible? 
Anyone tried and has a successful configuration?
Which bundles are required?
Should I provide more information for my use case?

Thanks for your help,
Regards, 

Mike