This part of the documentation covers all the core classes and services of iPOPO.
The bundle context is the link between a bundle and the framework. It's by the context that you can register services, install other bundles.
pelix.framework.BundleContext
The Framework object is a singleton and can be accessed using get_bundle(0) <pelix.framework.BundleContext.get_bundle>. This class inherits the methods from pelix.framework.Bundle.
pelix.framework.Framework
This object gives access to the description of an installed bundle. It is useful to check the path of the source module, the version, etc.
pelix.framework.Bundle
Those objects are given to listeners when a bundle or a service event occurs.
pelix.internals.events.BundleEvent
pelix.internals.events.ServiceEvent