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The second issue is related to whether your application is run completely on top of the OSGi framework as a set of bundles or whether your application hosts an embedded OSGi framework instance. Creating applications completely as a set of bundles is the preferred approach since it allows the application to run on any OSGi framework, but this it not always possible. In such cases where it is not possible or desired, then you may host a framework instance inside your application, which will likely tie your application to that framework implementation (although less so with the framework launching API introduced in the OSGi R4.2 specification).

The remainder of this document will present variations of an example application that demonstrates these different approaches.

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