I guess that OBR using an repository xml (metadata about bundles) generated out of the maven artifacts from a maven repo (or more federated repositories) can satisfy your requirements. And Jason van Zyl (Sonatype) was talking lately about OBR repository support in Nexus = automatically generate the metadata regarding OSGi artifacts out of artifacts available in a repository.
On Tue, Apr 7, 2009 at 12:19 AM, David Jencks <david_jen...@yahoo.com> wrote: > Lets suppose we were in an alternate reality in which every artifact in > maven repos was a correctly configured osgi bundle, using imports and > exports rather than require-bundle. > > Now suppose I've downloaded all the bundles locally and have fired up osgi > so it can see all of them. > > Now I try to load a bundle that imports some classes that are available from > several bundles, say the geronimo, sun, and tomcat servlet 2.5 spec jars, or > perhaps the slf4j interface classes. > > What facilities does osgi or felix provide to help decide which bundle will > be selected to provide these classes? > > > -background-- > > We're looking at using osgi in Geronimo. Currently we have a classloading > system with most of the capabilities of the osgi classloading model but > oriented more towards maven metadata. Each geronimo specific artifact has > some dependency metadata like maven dependencies that specify most of the > classloader, and you can tweak it with filters to emulate the import/export > conditions in osgi. > > Since the (multiple parents) of an artifact are specified as other > artifacts, its easy, starting with a particular artifact, to pull in all its > dependencies by artifact name and obtain all the pieces that are needed to > run the artifact you are interested in. This is just like maven: you > specify a dependency in your pom and it and all its transitive dependencies > are automatically downloaded and made available to your build. > > Btoh Geronimo and Maven have ways to override the original dependencies of > an artifact and substitute something else. > > IIUC in osgi one can use require-bundle to specify dependencies in a similar > way but again IIUC this is highly frowned upon from a theoretical > perspective and I don't know of any way of overriding require-bundle > specifications. > > So.... is there anything in osgi or felix that provides this kind of > dependency specification that can be used with import/exports to specify > specific bundles to satisfy import requirements? > > many thanks > david jencks > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@felix.apache.org > For additional commands, e-mail: users-h...@felix.apache.org > > -- Alin Dreghiciu http://www.ops4j.org - New Energy for OSS Communities - Open Participation Software. http://www.qi4j.org - New Energy for Java - Domain Driven Development. Looking for a job. Sent from Cluj-Napoca, CJ, Romania --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@felix.apache.org For additional commands, e-mail: users-h...@felix.apache.org
