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https://issues.apache.org/jira/browse/FELIX-4198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13746683#comment-13746683
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Richard S. Hall commented on FELIX-4198:
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I don't think this is a framework issue, although I could be wrong.
It looks like you install another copy of the OSGi core API and when you
restart the Gogo bundles gets wired to the other copy rather than the framework
copy, thus they are incompatible.
Not sure why it would favor the bundle copy over the framework copy, unless the
bundle copy has a higher version number.
Regardless, I cannot think of too many good reasons to install another copy of
the OSGi API into the framework.
> ClassCastException: org.apache.felix.bundlerepository.impl.Activator cannot
> be cast to org.osgi.framework.BundleActivator
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: FELIX-4198
> URL: https://issues.apache.org/jira/browse/FELIX-4198
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: framework-4.2.1
> Environment: Mac OS X
> Reporter: Morten Christensen
>
> I start a fresh felix-framework-4.2.1 shell and install following bundles
> using OBR repository service from a local maven repository with no errors or
> problems (optionally, I then change the start level of the new bundles but it
> does not make a difference):
> START LEVEL 1
> ID|State |Level|Name
> 0|Active | 0|System Bundle (4.2.1)
> 1|Active | 1|Apache Felix Bundle Repository (1.6.6)
> 2|Active | 1|Apache Felix Gogo Command (0.12.0)
> 3|Active | 1|Apache Felix Gogo Runtime (0.10.0)
> 4|Active | 1|Apache Felix Gogo Shell (0.10.0)
> 5|Installed | 1|Apache Felix Http Bundle (2.0.4)
> 7|Installed | 2|slf4j-jdk14 (1.7.5)
> 8|Installed | 2|Apache Log4j (1.2.17)
> 9|Installed | 2|osgi.cmpn (4.2.0.200908310645)
> 10|Installed | 2|Apache HttpClient OSGi bundle (4.2.5)
> 11|Installed | 2|slf4j-api (1.7.5)
> 12|Installed | 2|osgi.core (5.0.0.201203141902)
> 13|Installed | 2|Commons Logging (1.1.2)
> 14|Installed | 2|Apache Apache HttpCore OSGi bundle (4.2.5)
> I then hit Ctrl-C, and restart and get the following result (with shell not
> working):
> felix-framework-4.2.1: java -jar bin/felix.jar
> ERROR: Bundle org.apache.felix.bundlerepository [1] Error starting
> file:/Users/Shared/Java/libs/felix-framework-4.2.1/bundle/org.apache.felix.bundlerepository-1.6.6.jar
> (org.osgi.framework.BundleException: Activator start error in bundle
> org.apache.felix.bundlerepository [1].)
> java.lang.ClassCastException:
> org.apache.felix.bundlerepository.impl.Activator cannot be cast to
> org.osgi.framework.BundleActivator
> at
> org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4336)
> at org.apache.felix.framework.Felix.activateBundle(Felix.java:2141)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
> at
> org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
> at java.lang.Thread.run(Thread.java:724)
> ERROR: Bundle org.apache.felix.gogo.command [2] Error starting
> file:/Users/Shared/Java/libs/felix-framework-4.2.1/bundle/org.apache.felix.gogo.command-0.12.0.jar
> (org.osgi.framework.BundleException: Activator start error in bundle
> org.apache.felix.gogo.command [2].)
> java.lang.ClassCastException: org.apache.felix.gogo.command.Activator cannot
> be cast to org.osgi.framework.BundleActivator
> at
> org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4336)
> at org.apache.felix.framework.Felix.activateBundle(Felix.java:2141)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
> at
> org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
> at java.lang.Thread.run(Thread.java:724)
> ERROR: Bundle org.apache.felix.gogo.runtime [3] Error starting
> file:/Users/Shared/Java/libs/felix-framework-4.2.1/bundle/org.apache.felix.gogo.runtime-0.10.0.jar
> (org.osgi.framework.BundleException: Activator start error in bundle
> org.apache.felix.gogo.runtime [3].)
> java.lang.ClassCastException:
> org.apache.felix.gogo.runtime.activator.Activator cannot be cast to
> org.osgi.framework.BundleActivator
> at
> org.apache.felix.framework.Felix.createBundleActivator(Felix.java:4336)
> at org.apache.felix.framework.Felix.activateBundle(Felix.java:2141)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1291)
> at
> org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
> at java.lang.Thread.run(Thread.java:724)
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