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https://issues.apache.org/jira/browse/COMPRESS-552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17296837#comment-17296837
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Stefan Bodewig commented on COMPRESS-552:
-----------------------------------------

Commits 30a77505 seems to work, it would be good if you could test it with a 
real OSGi setup. 

> OSGI check broken - try to load class BundleEvent always fails
> --------------------------------------------------------------
>
>                 Key: COMPRESS-552
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-552
>             Project: Commons Compress
>          Issue Type: Bug
>          Components: Compressors
>    Affects Versions: 1.20
>            Reporter: Björn Michael
>            Priority: Major
>
> There is a check for running in OSGI env. in {{ZstdUtils}}, {{BrotliUtils}}, 
> {{LZMAUtils}} and {{XZUtils}} like this:
> {code:java}
> static {
>     cachedZstdAvailability = CachedAvailability.DONT_CACHE;
>     try {
>         Class.forName("org.osgi.framework.BundleEvent");
>     } catch (final Exception ex) { // NOSONAR
>         setCacheZstdAvailablity(true);
>     }
> }
> {code}
> Loading the class {{org.osgi.framework.BundleEvent}} always fails because 
> {{Import-Package}} directive for {{org.osgi.framework}} is missing in 
> _MANIFEST.MF_. Or it requires another more sophisticated approaches 
> ([https://stackoverflow.com/q/5879040/1061929]).
> Tested with Eclipse 4.14 (org.eclipse.osgi_3.15.100.v20191114-1701.jar)



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