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For Drools 5.0 I moved away from async methods on the main interfaces,
as it just got messy repeating ever method with an async version.
Instead I plan to add a single async equivalent of the
CommandExecutor.execute() method, and all async operations can be done
that way. Much cleaner.<br>
<br>
Mark<br>
Edson Tirelli wrote:
<blockquote
cite="mid:e6dd5ba30905270523t224ec092r2165a786ecacab42@mail.gmail.com"
type="cite"><br>
Hey Greg, please do open the JIRA.<br>
<br>
Thanks<br>
Edson<br>
<br>
<div class="gmail_quote">2009/5/27 Greg Barton <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:greg_barton@yahoo.com">greg_barton@yahoo.com</a>></span><br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
At seemingly random times I'm getting this exception:<br>
<br>
Exception in thread "Thread-5" java.lang.NullPointerException<br>
at
org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1387)<br>
at
org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1350)<br>
at
org.drools.concurrent.UpdateObject.execute(UpdateObject.java:46)<br>
at
org.drools.concurrent.CommandExecutor.run(CommandExecutor.java:78)<br>
at java.lang.Thread.run(Thread.java:619)<br>
<br>
I've only gotten the exception when using StatefulSession.asyncUpdate()
from a separate thread.<br>
<br>
AbstractWorkingMemory.java:1387 is wrapped in an if statement that
checks whether maintainTms==true, so setting that to false has
apparently avoided the problem. (Can't be 100% sure, but it has been
runnign for a few hours without exception.) The FactHandles I'm passing
in to StatefulSession.asyncUpdate() are never null, so I can only guess
that InternalFactHandle.getEqualityKey() is sometimes returning false.<br>
<br>
Do you want a JIRA on this? I can't recreate it reliably.<br>
<br>
<br>
<br>
<br>
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</blockquote>
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<br>
<br clear="all">
<br>
-- <br>
Edson Tirelli<br>
JBoss Drools Core Development<br>
JBoss, a division of Red Hat @ <a moz-do-not-send="true"
href="http://www.jboss.com">www.jboss.com</a><br>
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