May I ask you to raise a JIRA issue ? Thank you very much. Regards Felix
Am 22.08.2012 um 19:26 schrieb Chetan Mehrotra: > I am also facing the same issue where JcrResourceListener activate is > failing with a NPE. On debugging it appears that session instance returned > is null. Which happens because 'requiredFactories' in > RootResourceProviderEntry.loginToRequiredFactories [1] empty. > > 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. > > Chetan Mehrotra > [1] > org.apache.sling.resourceresolver.impl.tree.RootResourceProviderEntry.loginToRequiredFactories(ResourceResolverContext) > > On Wed, Aug 22, 2012 at 2:02 AM, Dascalita Dragos <[email protected]>wrote: > >> Hi, >> I actually managed to reproduce the error on my local machine as well, by >> stopping and starting Apache Sling JCR Resource Resolver >> org.apache.sling.jcr.resource< >> http://hendrix.local.adobe.com:8080/system/console/bundles/36> >> bundle. >> >> Regards, >> Dragos Dascalita Haut >> >> On Tue, Aug 21, 2012 at 10:59 PM, Dascalita Dragos <[email protected] >>> wrote: >> >>> Hello, >>> I'm trying to understand the cause of the error in the title.My Sling >>> version is built from Rev. 1375551, but this error was happening >>> previously. It's not happening when running Sling in my local machine, >> but >>> it's happening when I'm running it on a Cent OS 6.2 machine, with java >>> version: >>> >>> java version "1.6.0_22" , OpenJDK Runtime Environment (IcedTea6 1.10.6) >>> (rhel-1.25.1.10.6.el5_8-x86_64) , OpenJDK 64-Bit Server VM (build >> 20.0-b11, >>> mixed mode) >>> >>> >>> *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) >>> >>> The code goes into ResourceResolverImpl.getSession(). >> this.factory.getRootProviderEntry().adaptTo(this.context, >>> Session.class); returns a null session. >>> >>> It seems like final Iterator<Adaptable> i = >>> this.adaptableProviders.getProviders(ctx, null); (within >>> RootResourceProviderEntry.java class) returns an empty list, and >>> therefore the result is null, causing the session in JcrResourceListener >> to >>> be null and then the NPE. >>> >>> I'm trying to understand how come SortedProvidersList.getProviders() is >>> empty and if providers can be configured, or what can I do to workaround >>> this issue. >>> >>> >>> Thanks for your help, >>> >>> Dragos Dascalita Haut >>> >>> >>> >>> >>> >>> >>> >>> >>
