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Posted to dev@sling.apache.org by "Chetan Mehrotra (JIRA)" <ji...@apache.org> on 2012/08/23 08:52:41 UTC
[jira] [Commented] (SLING-2573) JcrResourceListener activation is
failing with NPE
[ https://issues.apache.org/jira/browse/SLING-2573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440087#comment-13440087 ]
Chetan Mehrotra commented on SLING-2573:
----------------------------------------
This is probably happening because of a startup order. ResourceResolverFactoryImpl which is responsible for setting the requiredFactories in RootResourceProviderEntry has an Optional, Multiple dependency on ResourceProviderFactory. So it can happen that when a ResourceResolverFactory is published in OSGi SR it does not have any reference to ResourceProviderFactory and in that time JcrResourceListener tries to access it.
May be the dependency should be set to Required, Multiple to ensure that ResourceResolverFactoryImpl is properly initialized.
For more details refer to http://markmail.org/thread/4jjqnlsefnqnkdtf
> JcrResourceListener activation is failing with NPE
> --------------------------------------------------
>
> Key: SLING-2573
> URL: https://issues.apache.org/jira/browse/SLING-2573
> Project: Sling
> Issue Type: Bug
> Components: JCR
> Reporter: Chetan Mehrotra
>
> The activate method of JcrResourceListener of org.apache.sling.jcr.resource is failing with NPE for 2.1.1.SNAPSHOT
> 22.08.2012 22:19:27.919 *ERROR* [FelixStartLevel] org.apache.sling.jcr.resource [org.apache.sling.jcr.resource.internal.JcrResourceListener] The activate method has thrown an exception (java.lang.NullPointerException) java.lang.NullPointerException
> at org.apache.sling.jcr.resource.internal.JcrResourceListener.activate(JcrResourceListener.java:133)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:227)
> at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:38)
> at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:591)
> at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:472)
> at org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:146)
> at org.apache.felix.scr.impl.manager.ImmediateComponentManager.createImplementationObject(ImmediateComponentManager.java:226)
> at org.apache.felix.scr.impl.manager.ImmediateComponentManager.createComponent(ImmediateComponentManager.java:118)
> at org.apache.felix.scr.impl.manager.AbstractComponentManager$Unsatisfied.activate(AbstractComponentManager.java:997)
> at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInterna
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