The org.osgi.service.cm package has 2 "version" in your example. One 
loaded from a bundle and used by the ConfigurationAdmin service 
implementation and the other on the application classpath. You need to 
either use reflection to use the service (then you don't need the version 
on the classpath) or you need to configure the framework to export the 
version on the package on the application classpath from the system bundle 
(org.osgi.framework.systempackages.extra) so that the ConfigurationAdmin 
bundle uses that version of the package.
-- 

BJ Hargrave
Senior Technical Staff Member, IBM
OSGi Fellow and CTO of the OSGi Alliance
[email protected]

office: +1 386 848 1781
mobile: +1 386 848 3788




From:
Jansson Patrik <[email protected]>
To:
"[email protected]" <[email protected]>
Date:
2009/05/25 08:57
Subject:
[equinox-dev] Framework launching and class loaders
Sent by:
[email protected]



I'm using the framework launching API to start an OSGi framework (which in 
this case is Equinox 3.5M6).
I need to pass some configuration from the launcher application to one of 
the bundles running so I thought
of using the ConfigurationAdmin service for this.
 
The launcher gets hold of a BundleContext (from the framework handle) and 
gets a reference to the 
service; ServiceReference reference = context.getServiceReference(...)
 
But I get into trouble on the next step
ConfigurationAdmin cAdmin = (ConfigurationAdmin) 
context.getService(reference);
This throws a ClassCastException. The actual object returned uses 
equinox's class loader while the class I'm
trying to cast to, ConfigurationAdmin, is loaded through the launcher's 
standard class loader
(sun.misc.Launcher$AppClassLoader in this case).
 
How can I go around this? Shouldn't I be playing with OSGi services 
outside the framework like this? In
that case how should I pass configuration from the launcher to the bundle?
 
Thanks,
-Patrik Jansson
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