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https://issues.apache.org/jira/browse/TUSCANY-2343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12603038#action_12603038
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Rajini Sivaram commented on TUSCANY-2343:
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Daniel,
Now that is good progress, though obviously not quite enough :-(.
The exception shows that SDO API bundle is not able to load the class
HelperProviderImpl from the SDO implementation bundle. Do you have another copy
of SDO bundles (api/impl/lib)? SDO has been packaged as OSGi bundles for a
while now, and I think it has been used with Eclipse for sometime. So I didn't
want to break it. But the SDO bundles shipped separately use EMF which has a
dependency on Eclipse, and I think they require Buddy-Policy for classloading.
Tuscany SCA repackages these bundles to avoid the Eclipse dependency (this is
probably not an issue for you) and also to enable the bundles to import from
each other without requiring Eclipse-specific Buddy-Policy (I think all the SDO
bundles need to be buddies).
If you do have another set of SDO bundles in your environment, you could either
uninstall them and use Tuscany's versions or use Buddy-Policy. If you dont have
another version of SDO, it must be a different problem altogether...
- Rajini
> OSGi bundle design leads to class loading issues
> ------------------------------------------------
>
> Key: TUSCANY-2343
> URL: https://issues.apache.org/jira/browse/TUSCANY-2343
> Project: Tuscany
> Issue Type: Bug
> Reporter: Georg Schmidt
> Attachments: Libary Versions.xls, test_bundles.zip
>
>
> Currently the design of the OSGi bundles leads to class loading exceptions.
> There seem to be several reasons for this behavior:
> * reexporting of all libraries without version numbers
> * imports without version numbers
> Please use distinct bundles for 3rd party libraries. That would lead to
> easier reusage of your bundles in a larger OSGi project.
> The current status leads to undefined system behaviour due to the OSGi class
> loading concept.
> Please tell if you see a way, how we could support you by achieving this
> goal. (If a solution is interesting for you) We are willing to contribute
> because its a critical project issue for us.
> The problems occur with the current snapshot release. Sorry, I do not know
> which version to take.
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