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Build Identifier: M6 incubation Coming from eclipse I am used to solve some problems (esp regarding hibernate) with buddy class loading and I found that this does not work on virgo. I do not know how this is implemented in eclipse, but maybe its not a great effort to take that into virgo. I guess Buddy Class loading is a little bit more specific than import-scope:application which one does not always want. Reproducible: Always
Virgo's notion of a scoped application is much more robust that buddy class loading, which is really a hack. Buddy class loading latches on to what appears to be a suitable bundle but does not pay much attention to versioning and so is unreliable in any situation where there are multiple bundles exporting the package of the class being loaded. The Equinox committers accept the hackiness of buddy class loading, so it's not NIH on the part of Virgo. Essentially the bundles in a scope (i.e. a PAR file or a scoped plan) have all their exports imported by a generated bundle known as the synthetic context bundle and this bundle's class loader is used as the TCCL by the bundles in the scope. So buddy class loading is not supported. If there is a scenario which scopes do not address and which buddy class loading appears to address, please construct a test case to reproduce and feel free to reopen this bug.
Hi Glyn thanks for clearifying this. I am just getting started. But how do I solve this : I have a services bundle that contains an entity-update-listener that hibernate wants to load. As the package is imported from nowhere its not visible to hibernate. As far as I understodd it by now I would have to create a dummy bundle that imports with scope:application, is this right or is there a better way to achieve this ?
If I've understood correctly and the services bundle is part of a PAR or a scoped plan, you just need to export the package of the entity update listener from the services bundle so that it will be visible to hibernate for thread context class loading.
I'll have to learn what "scoped plan" means :) Maybe I have to change something in my plan. Thanks for helping so quickly.
