2009/5/8 AndreiJuan <[email protected]> > > Some third-party libraries rely on files placed under META-INF in "the > classpath" for configuration -- Jersey and Hibernate, for example. > However, > "the classpath" in an OSGi context does not exist any more in its "classic" > (pre-OSGi) acceptance. > > With Jersey, copying the files under my own bundle proved to be a usable > workaround and Jersey manages to load those files properly. However, > Hibernate (more exactly, org.hibernate.ejb.Ejb3Configuration) follows a > different strategy: it asks the current thread's context classloader what > the URL to the resource is, then it attempts to read from that URL itself. > > Although I'm setting the current thread's context class loader to be my > bundle's classloader (in a static block at the top of my bundle activator), > Ejb3Configuration fails to read that file when running in Felix, because > the > URL returned by the classloader is something like "bundle://...", which it > does not know how to process. > > Is there a "Felix-recommended" (or perhaps better, OSGi-recommended) way of > placing those "META-INF" resources? (I cannot wait until all third-party > bundles become OSGi-friendly, sorry.) > > The only thing I could think of was to set the current thread's context > class loader not directly to my bundle's (Felix) class loader, but to a > custom one that I write, and that for a certain (configurable) set of > resources it returns "file://..." URLs to a custom directory within the > container, and for everything else it defers to the Felix class loader. > > Any better idea would be appreciated. >
you might want to look into using the "extender" pattern: http://www.osgi.org/blog/2007/06/osgi-and-hibernate.html basically have one bundle that watches for other bundles - it scans their META-INF contents and programmatically registers them with the hibernate bundle -- > View this message in context: > http://www.nabble.com/Third-party-libraries-cannot-access-META-INF-filename-resources-tp23431881p23431881.html > Sent from the Apache Felix - Users mailing list archive at Nabble.com. > -- Cheers, Stuart
