I don't think it has. The history of the Jira ticket referenced above shows
it getting pushed along from one release to the next.
I did come up with an alternative that works, although it's a bit clunkier.
Check this thread out - hopefully it'll help you -
We did something similar - we implemented a table-based mechanism for turning
rules on and off. The business users have a UI that allows them to toggle
the rules via a simple boolean value. These values are cached and refreshed
on a regular basis. Rather than inserting that cache as a fact, I
I don't think you can reference a fact in the enabled condition. There's
also no way to get a reference to the current rule like you can in the RHS,
which is why I had to hard code the name.
Vincent, thanks for the comment out the inheritance. I think that would
work well for icechunk. I had
bump...
Anyone have some thoughts on whether my revise approach makes sense?
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Thanks for the feedback. When we find the time to implement these changes,
I'll report back and let you know how they turned out.
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Thanks for the feedback.
Wolfgang, that's a good thought, but we do need to do some re-evaluation
along the way - just not as much as we're doing right now - so the 'dirty
update' approach doesn't seem applicable here.
Robert, your post got me thinking. If I'm interpreting what you're saying
I've continued digging in this issue and I've learned a few more things:
- Per a suggestion I received via the mailing list, I tried making the
'output' fact a global. This gave me an incredible performance boost -
going from 10 mins to 100 ms!
- BUT - making the output fact a global caused
We're building a fraud detection application that uses rules to analyze
orders and the buyers and recipients on those orders. As rules fire, they
modify an 'output' fact, which is an object whose only intent is to record
the results as rules fire. It's not used in the LHS of any rules other than
I'm not sure your answer directly addresses the question. BPMN and BPEL
aren't the same thing - BPMN is an unstructured diagramming notation that an
be directly executed from within Drools, where as BPEL is a semi-structured
language. While most BPMN flows can be translated to BPEL, not
I'm trying to remove the listeners myself as Edson suggests, but I can't
figure out how to make it work. I added this to my code just to see how
many listeners there were (I expected to see three - one for each of my
flows - based on what I see in the heap dump):
Collection listeners =
Thanks for the reply, Alejandro.
I'm currently using these jars:
knowledge-api-5.2.0.Final.jar
drools-core-5.2.0.Final.jar
drools-compiler-5.2.0.Final.jar
jbpm-flow-5.1.0.Final.jar
jbpm-flow-builder-5.1.0.Final.jar
jbpm-bpmn2-5.1.0.Final.jar
I tried changing the three jbpm jars to
Thanks, Mark. That's what I figured. Not sure why it worked for Alejandro,
but I won't pursue that avenue anymore. As I mentioned earlier, I did try
to upgrade to 5.3.0.CR1, but there's a new bug in that version that makes it
unusable for me. (You've been involved in that thread as well). I'm
I've attached a simple stand-alone example to the ticket.
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Thanks for all of the feedback. I haven't tried W's handler, but I'm
planning to. I did take Edson's advice and was able to get some more info.
It appears to involve the interaction between 3 rules. For background, this
is a fraud detection application. Under certain conditions, we need to
-alone example.
I know a stack trace probably won't tell you much, but I've included it
below just in case. If anyone has any ideas, I'd love to hear them. If
there's any additional information you think might help diagnose the
problem, I'd be happy to provide it.
Thanks,
Jamie
I recently ran into this issue and I've confirmed through testing that Drools
5.3.0.CR1 in conjunction with JBPM 5.1.1 Final fixes the problem.
We're currently rolling our JVMs nightly to prevent out of memory errors, so
I need to deploy this upgrade to production ASAP. Can anyone tell me what
For me, the key was at the very end of my last post - the flow needs to have
an ID. If it doesn't, the editor chokes when you re-open the file.
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Bump...
I really need some help with this issue - can anyone answer even some of my
questions? If my problem or my questions aren't clear, let me know and I'll
try to clarify.
Thanks!
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Fair enough - I'll try to work out a simplified test case that demonstrates
the behavior.
In the meantime, can someone answer a very basic rules/flow question for me?
In my simple, linear test flow, if I cancel any activation, why don't any of
the remaining nodes in the flow get triggered?
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Bump...
Anyone have any thoughts on this? What's the mechanism for reporting a
suspected bug?
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I'm having some issues with the interaction between Flow, ruleflow-groups and
AgendaFilters. I've tried it with 5.1.1, 5.2.0 using .rf files and 5.2.0
using .bpmn files, all with the same results, so I'm sure I'm just
misunderstanding something.
I have a flow that looks like this:
Thanks for pointing that out, Wolfgang. I had stripped out some parentheses
during some testing. We had them there in the 5.1.1 version. They don't
seem to make a difference in 5.2.0 for the cases I've been working with.
In an attempt to create something stand-alone that I could share in
I'm trying to move from Drools 5.1.1 to 5.2 and I'm reworking my .rf files
into .bpmn files, but I've run into an issue - I use the wizard to create a
new file like MainFlow.bpmn. After I create it, I open it using the BPMN2
process editor and all is well. However, if I add anything to the
I found the log and the problem. Here's a snippet of the log:
!ENTRY org.drools.eclipse 4 120 2011-07-19 11:04:57.102
!MESSAGE Internal error in Drools Plugin:
!STACK 0
java.lang.NullPointerException
at org.jbpm.bpmn2.xml.di.BPMNPlaneHandler.end(BPMNPlaneHandler.java:75)
at
This rule used to compile in the IDE under Drools 5.1.1:
when
$order: OrderFact(numberOfCreditCardDeclines
FraudCCDeclines.find().getCreditCardDeclinesThreshold())
then
//do something
but it's breaking since I moved to 5.2, although it runs fine when I deploy
it
I do mean Eclipse. What do you mean by 'vanilla DRL'? It does seem to
compile and run correctly when I deploy it.
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Thanks, Esteban. I'm going to need to do some testing. I'll post back my
findings...
-- Jamie
From: Esteban [via Drools]
[mailto:ml-node+2961373-771292982-397...@n3.nabble.com]
Sent: Thursday, May 19, 2011 9:41 AM
To: Jamie Shaw
Subject: Re: [rules-users
Thanks Greg - that's what I was hoping.
Just to confirm - I should be able to cache a KnowledgeBase created by a
KnowledgeAgent with the 'drools.agent.newInstance' property set to 'false'
without seeing any unexpected results if the KnowledgeBase gets refreshed by
the agent.
Given that, why
Thanks for pointing me to that thread, Wolfgang - very interesting
discussion. It confirms my fear, at least for stateful sessions. Do you
know if it's true for stateless sessions as well?
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That's good news - thanks again!
-- Jamie
From: Wolfgang Laun-2 [via Drools]
[mailto:ml-node+2952942-1245008499-397...@n3.nabble.com]
Sent: Tuesday, May 17, 2011 11:41 AM
To: Jamie Shaw
Subject: Re: [rules-users] Effect of KnowledgeAgent reload on currently
using the Drools 4.07 RulesAgent for
caching RuleBases that needed to be automatically reloaded. It seems to be
working as expected. I'm trying to update those classes to use Drools 5.1
classes instead.
Thanks,
Jamie
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