[Sorry for the very late comments, only just catching up]
I agree that fragments are a logical way to go here. At 14:44 09/11/2006, Hawkins, Joel wrote:
OSGi has a concept known as a Bundle Fragment. A fragment is packaged as a separate bundle, but at runtime acts is if it were packaged directly as part of the host bundle. My thought was to package runtime extensions as fragments, and designate the sca kernel bundle as the bundle host. Add to that a mechanism to populate the system composite tree with the extensions, and you've got something that (to me) sounds very much like what you've described above. Application bundles could specify a dependency on the sca kernel bundle, at inherit classloader access to all the extensions as a result.
andy
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