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https://issues.apache.org/jira/browse/TUSCANY-2343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602637#action_12602637
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Daniel Stucky commented on TUSCANY-2343:
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I was not able to set a breakpoint in method findClass(...). Eclipse did just
not allow it. It was possible in all other methods, though.
Here are the results of the breakpoint in getResource(...) and following code
1st call:
OSGiBundleActivator$BundleClassLoader (id=84)
bundle.size() = 230
resName=META-INF/services/javax.xml.stream.XMLInputFactory
URL=bundleresource://52/META-INF/services/javax.xml.stream.XMLInputFactory
factoryClassname=com.ctc.wstx.stax.WstxInputFactory
2nd call:
OSGiBundleActivator$BundleClassLoader (id=84)
bundle.size() = 230
resName=META-INF/services/javax.xml.stream.XMLInputFactory
URL=null
As you can see, the URL in the 2nd call is null.
> 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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