[prev in list] [next in list] [prev in thread] [next in thread] 

List:       jboss-user
Subject:    [jboss-user] [jBPM Users] - Re: task & timers
From:       MohReece <do-not-reply () jboss ! com>
Date:       2009-12-11 16:43:01
Message-ID: 5074662.1260549781015.JavaMail.jboss () nukes01 ! app ! mwc ! hst ! phx2 ! redhat ! com
[Download RAW message or body]

Unfortunately your stack trace doesn't show the real (original) exception, maybe \
there is a 'caused by' trace underneath it? But from this one, more particular the \
line at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:276)
we are able to see that the exception originates in the executeAction(...) method, \
indicating there's either an exception is thrown in the execution of the Action (and \
thus most likely in the ActionHandler), or something went wrong in the locking of the \
Token (and that would be my first guess here).

When you signal a Token from within an ActionHandler, chances are that the call \
executing the ActionHandler already locked the Token (for the duration of the \
Action's execution, see GraphElement.java lines 241-264). The signal call causes the \
node-leave event, which in turn causes your DefaultEnd handler to be called... but \
before it gets there it tries to lock the Token - again.

A signal should be used 'from the outside' to trigger a process instance to move on, \
from the inside it's possibly safe (depends on the node type really) to directly use \
the leave(...) method. You can try replacing the line token.signal(isOK ? "OK" : \
"KO"); with
executionContext.getNode().leave(executionContext, isOK ? "OK" : "KO");
to see whether this works for you.

Hope this helps a bit more!

View the original post : \
http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4270261#4270261

Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4270261
 _______________________________________________
jboss-user mailing list
jboss-user@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/jboss-user


[prev in list] [next in list] [prev in thread] [next in thread]