David, Thanks for the reply. I figured it had to do with Class loaders but I'm at a loss as to how this is happening; I don't know a lot about class loaders.
Here's some more detail on my situation: as I said we're using Felix in an embedded fashion; we instantiate a Felix object and start it from within a JavaFX app (we're using IntelliJ). I suppose this is the source of the different classloaders. The reason I'm confused is that we have been successfully using a ServiceTracker to get references to our plugins without any classloading issues. So how can I fix this? Do I need access Felix's classloader and use it to load the RepositoryAdmin? Any pointers on how to do this? Thanks, Tim On 08/06/2014 03:15 AM, David Bosschaert wrote: > Hi Tim, > >> java.lang.ClassCastException: >> org.apache.felix.bundlerepository.impl.RepositoryAdminImpl cannot be >> cast to org.apache.felix.bundlerepository.RepositoryAdmin > This happens when the RepositoryAdmin interface is loaded from a > different classloader than where the RepositoryAdminImpl loads it > from. > > You need to check that the bundle that runs your code has an import on > the org.apache.felix.bundlerepository package like this: > Import-Package: org.apache.felix.bundlerepository;version="[1.0,2)" > and is wired to the same bundle where you get the RepositoryAdminImpl from. > >> By the way, is there javadoc for Felix? I can't seem to find any. > If you're looking for documentation on Felix, it might be best to look > for general OSGi Framework documentation. You can find information on > the Felix Framework in the OSGi Core R5 specs [1] or in one of the > many books and web articles about the OSGi framework. > > For documentation about the Bundle Repository, it might be worth > looking at the OSGi R5 Enterprise Specs (also at [1]). Chapter 132 > describes the OSGi Repository Service. Since version 2.0.x this is now > also implemented by Felix OBR so using that gives you a standard API > to work with the Repository. > > Cheers, > > David > > [1] http://www.osgi.org/Download/Release5 > > On 5 August 2014 20:38, Tim McIver <[email protected]> wrote: >> Hello, >> >> I'm using Apache Felix in an embedded fashion. I'm attempting to access >> my own bundle repository so I install and start the bundle repository >> bundle like so: >> >> // install the Felix OBR bundle >> Bundle obrBundle = null; >> try { >> obrBundle = >> m_felix.getBundleContext().installBundle("file:/home/tim/workspace/clojure/lambdaprime/metascrape-ui/lib/org.apache.felix.bundlerepository-2.0.2.jar"); >> } catch (BundleException e) { >> System.err.println("Error installing Felix OBR bundle."); >> e.printStackTrace(); >> } >> >> // start the Felix OBR bundle >> if (obrBundle != null) { >> try { >> obrBundle.start(); >> } catch (BundleException e) { >> System.err.println("Could not start Felix OBR bundle."); >> e.printStackTrace(); >> } >> } >> >> I have a private method to get a RepositoryAdmin: >> >> private static RepositoryAdmin getRepositoryAdmin(BundleContext ctx) { >> ServiceReference ref = >> ctx.getServiceReference(RepositoryAdmin.class.getName()); >> if (ref != null) { >> return (RepositoryAdmin)ctx.getService(ref); >> } >> return null; >> } >> >> But when this method is called, I get the following exception: >> >> java.lang.ClassCastException: >> org.apache.felix.bundlerepository.impl.RepositoryAdminImpl cannot be >> cast to org.apache.felix.bundlerepository.RepositoryAdmin >> >> I'm using felix.jar from the bin directory of of the 4.4.1 distribution >> and using org.apache.felix.bundlerepository-2.0.2.jar for the bundle >> repository. Any ideas what my issue is? >> >> By the way, is there javadoc for Felix? I can't seem to find any. >> >> Thanks, >> Tim >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
