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https://issues.apache.org/jira/browse/FELIX-682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622974#action_12622974
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Marcel Offermans commented on FELIX-682:
----------------------------------------

So how does manifest for a bundle specify an implementation version for a 
package? In that case the least you'd expect is one implementation version per 
package. Furthermore, this would have to be specified somewhere in the OSGi 
specifications.

Finally, if package versions were required, would you not expect the methods 
that are used to create this package information to throw 
IllegalArgumentExceptions if you did not specify them.

> Package.getImplementationVersion returns null for package loaded by Felix
> -------------------------------------------------------------------------
>
>                 Key: FELIX-682
>                 URL: https://issues.apache.org/jira/browse/FELIX-682
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: felix-1.0.4
>         Environment: NA
>            Reporter: Sahoo
>             Fix For: felix-1.2.0
>
>         Attachments: Felix-682.zip
>
>
> Even though MANIFEST.MF has proper entry for Implementation-Version, 
> Package.getImplementationVersion() returns null. A  reproducible test case is 
> attached. It is described below:
> public class Foo implements BundleActivator {
>     public void start(BundleContext context) throws Exception {
>         Package p = getClass().getPackage();
>         System.out.println(p);
>         System.out.println(p.getImplementationVersion());
>    }
> }
> The headers for this bundle are:
> osgi-test1 (10)
> ---------------
> Tool = Bnd-0.0.255
> Bundle-Activator = sahoo.osgitest1.Foo
> Implementation-Version = 1.0-SNAPSHOT
> Implementation-Vendor-Id = sahoo
> Bundle-Version = 1.0.0.SNAPSHOT
> Build-Jdk = 1.5.0_13-rev
> Implementation-Title = osgi-test1
> Created-By = Apache Maven Bundle Plugin
> Bundle-ManifestVersion = 2
> Manifest-Version = 1.0
> Bnd-LastModified = 1218821794953
> Private-Package = sahoo.osgitest1
> Bundle-Name = osgi-test1
> Built-By = ss141213
> Import-Package = org.osgi.framework;version="1.3"
> Bundle-SymbolicName = sahoo.osgi-test1

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