[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-3566) Conversation.isLongRunning() causes NPE

Nikolay Elenkov (JIRA) jira-events at lists.jboss.org
Fri Nov 7 04:44:36 EST 2008

    [ https://jira.jboss.org/jira/browse/JBSEAM-3566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12437418#action_12437418 ] 

Nikolay Elenkov commented on JBSEAM-3566:

I will try, but seems to happen in my production environment only (JBoss EAP 4.2, but that should matter, I think). 

I am attaching the full stack trace. Seems that Manager#getConversationEntry is returning null for some reason. 

> Conversation.isLongRunning() causes NPE
> ---------------------------------------
>                 Key: JBSEAM-3566
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-3566
>             Project: Seam
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.0.3.CR1
>         Environment: JBoss 4.2.2, Seam 2.0.3.CR1
>            Reporter: Nikolay Elenkov
>             Fix For: 2.1.2.CR1
>         Attachments: trace.log
> I have a couple of methods that log conversation start/end for debugging purposes in may app. 
> The code is pretty simple:
> @Observer(value = "org.jboss.seam.beginConversation")
> public void onConversationStart() {
>   log.debug("CONVERSATION Started");
>   Conversation c = Conversation.instance();
>   log.debug(String.format("id: %s; isLongRunning %s; viewId: %s", 
> 	c.getId(), c.isLongRunning(), c.getViewId()));
> }
> Most of the time that works OK, but I get an occasional NPE, seems to happen when 
> you access the app right after JBoss has started. Here is the trace:
> Caused by: java.lang.NullPointerException
> 	at org.jboss.seam.core.Manager.isReallyLongRunningConversation(Manager.java:230)
> 	at org.jboss.seam.core.Conversation.isLongRunning(Conversation.java:308)
> 	at myapp.LoggerBean.onConversationEnd(LoggerBean.java:145)

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