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https://issues.apache.org/jira/browse/CONFIGURATION-465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13119975#comment-13119975
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Rich Mayfield commented on CONFIGURATION-465:
---------------------------------------------
Thanks for the response. By default, packages listed in the MANIFEST.MF
Import-Package header is considered required. You can, however, make package
imports "optional" in cases like you have described.
If it is the case that the class that references Jexl (ExprLookup) is never
loaded via the bundle classloader for commons-configuration, then making that
package dependency optional should do the trick.
> commons-configuration
> ----------------------
>
> Key: CONFIGURATION-465
> URL: https://issues.apache.org/jira/browse/CONFIGURATION-465
> Project: Commons Configuration
> Issue Type: Bug
> Affects Versions: 1.7
> Reporter: Rich Mayfield
>
> I updated to use commons-configuration 1.7 (from 1.6) and am running into the
> following resolution error under Eclipse Equinox OSGi framework.
> An Import-Package could not be resolved. Caused by missing constraint
> in bundle <org.apache.commons.configuration_1.7.0>
> constraint: <Import-Package: org.apache.commons.jexl;
> version="0.0.0">
> According to the Import-Package header in 1.7's MANIFEST.MF,
> commons-configuration now has a required dependency on
> org.apache.commons.jexl. Problem is, there is no OSGi enabled version of
> Apache Commons jexl that exports this package.
> In jexl 2.0 the packages were renamed and org.apache.commons.jexl2 is
> exported. The 1.x codeline, although using org.apache.commons.jexl, does not
> have the appropriate MANIFEST.MF headers to be used as an OSGi bundle.
> As such, you cannot consume commons-configuration 1.7 in an OSGi environment.
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