On 22/02/2008, Richard S. Hall <[EMAIL PROTECTED]> wrote: > > I understand that you resolved the issue, but I am not sure that this > is the best approach in the long run. I have some suggestions for > different approaches too, but these are not good for the long run > either. > > 1. Since the default class path for a bundle is ".", you should be > able to load your plugin class directly from Bundle.loadClass(), I > would imagine. > > 2. You could create a special installer that you used to install your > plugin JAR file instead of doing it directly with > BundleContext.installBundle(). This special installer could > automatically run them plugin JARs through BND.
FYI, for a good example of 2 check out the wrap scheme from Pax-URL: http://wiki.ops4j.org/confluence/display/ops4j/Pax+URL+-+wrap it provides a URL handler that lets you wrap jars as bundles at runtime Long run, you probably want to migrate the plugins to bundles in some > fashion. > > -> richard > > > On Feb 21, 2008, at 9:40 PM, Mike Smoot wrote: > > > Hi, > > > > I'm working on migrating an existing swing application ( > http://cytoscape.org > > ) > > to OSGi using Felix. With the help of bnd, I've gotten everything > > running > > about how it should, with the exception of our legacy plugin > > mechanism. The > > way the old plugin mechanism works is that a plugin jar file (but > > not a > > bundle) is read and we then call ClassLoader.loadClass() on a class > > found in > > the jar file. The problem is that with Felix I get a > > NoClassDefFoundError > > when I try to load the class. I'm assuming this is because none of > > the > > packages defined in the plugin jar are found by Felix since the > > plugin jars > > aren't bundles or loaded as such. > > > > Now, I've managed to work around this problem in two cases. First > > is using > > Equinox, which I'm not terribly keen on using. Second is by running > > bnd on > > each plugin jar, loading them as bundles, jumping through a few > > hoops to get > > the correct ClassLoader, and then loading the class. The problem > > with the > > second approach is that I have to wrap all plugins before anything > > will > > work. I'd very much like to avoid this requirement (for now) > > because this > > will only work with plugins that I have and not those developed by > > users. > > > > Can anyone provide any guidance on loading classes that aren't part of > > bundles? Is this possible with Felix? I apologize if this is a bit > > vague, > > but I'm still very new to OSGi. > > > > thanks, > > Mike > > > > -- > > ____________________________________________________________ > > Michael Smoot, Ph.D. Bioengineering Department > > tel: 858-822-4756 University of California San Diego > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Cheers, Stuart
