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https://issues.jboss.org/browse/WFLY-3386?page=com.atlassian.jira.plugin....
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Andries Ehlers commented on WFLY-3386:
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Ochieng, not sure if the cause for your issue is the same as ours, but here goes: I
shelved this issue a long time ago and didn't get back to it, but in seeing your
comment I decided to revisit. I guess time does wonders because I think I spotted the
issue, or at least part of it. I believe it came down to a fault on our side. We were
injecting the activiti BusinessProcess in a stateless session bean, which was called from
an Rest resource. The exception was thrown when we tried to use that injected resource to
extract a variable from an Activiti process (or start a task) , which won't work - we
injected a business process from outside of Activiti CDI - ie how would activiti know
which business process it's supposed to inject?? As soon as we changed it to using
RuntimeManager, TaskManager etc to find the process instance by name and start the task,
it worked perfectly. We continue using BusinessProcess within beans that are referenced
from within activiti processes - there it works fine because it's injected from within
the Activiti context. Hope that helps.
Nullpointer exception on AbstractSessionBeanStore.getLockStore from
within Activiti CDI
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Key: WFLY-3386
URL:
https://issues.jboss.org/browse/WFLY-3386
Project: WildFly
Issue Type: Bug
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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