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http://jira.qos.ch/browse/LBCLASSIC-184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11588#action_11588
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Ceki Gulcu commented on LBCLASSIC-184:
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> There are two reasons:
>
> #1 - Provide our own SLF4J OSGi native logger implementation which
> re-use Logging Classic as logging backend
>
> #2 - Implement fragment packaging approach
> The only alternative I can see to #1 is to throw away Logback Classic
> and implement something new based on just Logback Core. We might call
> this Logback OSGi. I didn't like that path because much functionality
> already exists in Logback Classic.
It would be quite unfortunate if you were forced to re-implement
logback-classic.
> The fragment bundling approach is the one I prefer. It is more
> predictable than using bundles with optional imports especially when
> you need to deploy multiple versions of SLF4J. See also
> http://bugzilla.slf4j.org/show_bug.cgi?id=75#c14.
Will do.
Looking at your recipe for reproducing the problem, I noticed that the
logback-core bundle imports org.slf4j. Given that the logback-core module does
NOT depend at all on SLF4J, I find the import highly suspicious.
> Remove Cyclic Dependencies between Classic, SLF4J API and SLF4J Impl
> --------------------------------------------------------------------
>
> Key: LBCLASSIC-184
> URL: http://jira.qos.ch/browse/LBCLASSIC-184
> Project: logback-classic
> Issue Type: Task
> Components: Other
> Affects Versions: 0.9.18
> Reporter: Gunnar Wagenknecht
> Assignee: Ceki Gulcu
> Attachments: context-selector.patch, mdc-move.patch
>
>
> When working with Logback as OSGi bundles I found some issues regarding
> cyclic dependencies. Basically, code in "org.slf4j.impl" depends on
> "org.slf4j.api" as well as Logback classic. This is fine. However, code in
> Logback classic also depends on "org.slf4j.impl". This introduces a cycle.
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