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From "Felix Meschberger (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (FELIX-3288) NPE when component exposed as a service with servicefactory = true
Date Tue, 20 Nov 2012 10:59:12 GMT

     [ https://issues.apache.org/jira/browse/FELIX-3288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Felix Meschberger closed FELIX-3288.
------------------------------------


Close after release
                
> NPE when component exposed as a service with servicefactory = true
> ------------------------------------------------------------------
>
>                 Key: FELIX-3288
>                 URL: https://issues.apache.org/jira/browse/FELIX-3288
>             Project: Felix
>          Issue Type: Bug
>          Components: Declarative Services (SCR)
>    Affects Versions:  scr-1.6.0
>            Reporter: Jarek Gawor
>            Assignee: Felix Meschberger
>             Fix For: scr-1.6.2
>
>         Attachments: FELIX-3288.patch
>
>
> I have a component that is exposed as a service and is also configured with servicefactory
= true. I see the following NPE when shutting the framework:
> java.lang.NullPointerException
> 	at org.apache.felix.scr.impl.manager.ImmediateComponentManager.disposeImplementationObject(ImmediateComponentManager.java:252)
> 	at org.apache.felix.scr.impl.manager.ImmediateComponentManager.deleteComponent(ImmediateComponentManager.java:135)
> 	at org.apache.felix.scr.impl.manager.AbstractComponentManager$Satisfied.deactivate(AbstractComponentManager.java:1075)
> 	at org.apache.felix.scr.impl.manager.AbstractComponentManager.disposeInternal(AbstractComponentManager.java:357)
> 	at org.apache.felix.scr.impl.manager.AbstractComponentManager.dispose(AbstractComponentManager.java:196)
> 	at org.apache.felix.scr.impl.config.ConfiguredComponentHolder.disposeComponents(ConfiguredComponentHolder.java:299)
> 	at org.apache.felix.scr.impl.BundleComponentActivator.dispose(BundleComponentActivator.java:319)
> 	at org.apache.felix.scr.impl.Activator.disposeComponents(Activator.java:340)
> 	at org.apache.felix.scr.impl.Activator.bundleChanged(Activator.java:207)
> Since the component is configured with servicefactory = true, ServiceFactoryComponentManager
is used to manage the object. ServiceFactoryComponentManager overrides the createComponent()
method from ImmediateComponentManager. ServiceFactoryComponentManager also intended (I think)
to override the corresponding deleteComponent() method from ImmediateComponentManager. However,
the signature of the deleteComponent() in ImmediateComponentManager has changed a bit so the
override doesn't work anymore. So that's what I think is causing the problem in this case.

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