[jboss-jira] [JBoss JIRA] (WFLY-3386) Nullpointer exception on AbstractSessionBeanStore.getLockStore from within Activiti CDI

[Andries Ehlers (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-3386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12972270#comment-12972270 ] 

Andries Ehlers commented on WFLY-3386:
--------------------------------------

Hi Martin,

I did detail it in a previous comment, but just to re-iterate:  A web client calls our JAX-RS resource.  The JAX-RS resource performs some basic conversion from DTO to internal domain model with Dozer.  We have a Stateless Session Bean (injected with @Inject, not @EJB) containing business logic.  The Session Bean has an injected Activiti BusinessProcess.  

There is no JSF involved, no explicit interaction in our code with the conversation scope; its simply Web-Client -> JAX-RS Resource -> Stateless Session Bean -> BusinessProcess.

I'm not 100% sure as to the supported CDI version, but based on some JIRA issues I found the are referring to integrating CDI 1.1 etc.  

Regards,
Andries


> Nullpointer exception on AbstractSessionBeanStore.getLockStore from within Activiti CDI
> ---------------------------------------------------------------------------------------
>
>                 Key: WFLY-3386
>                 URL: https://issues.jboss.org/browse/WFLY-3386
>             Project: WildFly
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: CDI / Weld
>    Affects Versions: 8.0.0.Final
>         Environment: CentOS, Mac (Mountain Lion).
>            Reporter: Andries Ehlers
>            Assignee: Martin Kouba
>
> Background:
> The actual exception seems to be very close the one in issue: WFLY-3001 but we are not using JSF at all, but Activiti CDI.
> Not sure if this is a Wildfly or Activiti issue - it could very well be that there is a bug in Activiti with how it manages the CDI scopes.  Unfortunately we're at a loss and seeing that the nullpointer is thrown from within a weld AbstractSessionBeanStore, I decided to post it here.  Please advise.
> Error:
> We use Activiti CDI within Wildfly 8.0.0.Final.  We randomly encounter an issue (sometimes immediately after a redeploy, other times after a few hours of inactivity on the server) the following issue.  When Activiti attempts to retrieve the ContextBeanInstance from its ConversationScopedAssociationProxy, a NullPointer exception is thrown while attempting to retrieve the lock store within Weld (see below).
> -----------------------------
> 2014-05-21 10:05:34,430 INFO  [stdout] (default task-12) java.lang.NullPointerException: null
> 2014-05-21 10:05:34,430 INFO  [stdout] (default task-12) 	at org.jboss.weld.context.beanstore.http.AbstractSessionBeanStore.getLockStore(AbstractSessionBeanStore.java:113) ~[weld-core-impl-2.1.2.Final.jar!/:2014-01-09 09:23]
> 2014-05-21 10:05:34,430 INFO  [stdout] (default task-12) 	at org.jboss.weld.context.beanstore.AttributeBeanStore.lock(AttributeBeanStore.java:210) ~[weld-core-impl-2.1.2.Final.jar!/:2014-01-09 09:23]
> 2014-05-21 10:05:34,430 INFO  [stdout] (default task-12) 	at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:90) ~[weld-core-impl-2.1.2.Final.jar!/:2014-01-09 09:23]
> 2014-05-21 10:05:34,431 INFO  [stdout] (default task-12) 	at org.jboss.weld.context.PassivatingContextWrapper$AbstractPassivatingContextWrapper.get(PassivatingContextWrapper.java:76) ~[weld-core-impl-2.1.2.Final.jar!/:2014-01-09 09:23]
> 2014-05-21 10:05:34,431 INFO  [stdout] (default task-12) 	at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:98) ~[weld-core-impl-2.1.2.Final.jar!/:2014-01-09 09:23]
> 2014-05-21 10:05:34,431 INFO  [stdout] (default task-12) 	at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:78) ~[weld-core-impl-2.1.2.Final.jar!/:2014-01-09 09:23]
> 2014-05-21 10:05:34,431 INFO  [stdout] (default task-12) 	at org.activiti.cdi.impl.context.DefaultContextAssociationManager$ConversationScopedAssociation$Proxy$_$$_WeldClientProxy.getTask(Unknown Source) ~[activiti-cdi-5.15.jar:na]
> 2014-05-21 10:05:34,431 INFO  [stdout] (default task-12) 	at org.activiti.cdi.impl.context.DefaultContextAssociationManager.getTask(DefaultContextAssociationManager.java:237) ~[activiti-cdi-5.15.jar:na]
> 2014-05-21 10:05:34,432 INFO  [stdout] (default task-12) 	at org.activiti.cdi.BusinessProcess.startTask(BusinessProcess.java:332) ~[activiti-cdi-5.15.jar:na]



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