concurrent execution for the first time thorws error
by Sudhir M
Hi,
In our application we have different rulesets which we load them on
demand and cache them (knowledge base) for the sub-sequent requests.
For the first time before caching if we hit the server concurrently we
are getting the following exception which is not very clear.
I assume knowledge bases are thread safe and we can create multiple
stateful sessions using the same knowledege base.
we are using drools 5.1 final release.
java.lang.IllegalArgumentException: org.drools.process.instance.impl
at java.lang.ClassLoader.definePackage(ClassLoader.java:1452)
at java.net.URLClassLoader.definePackage(URLClassLoader.java:348)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1781)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:866)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1319)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1198)
at org.drools.SessionConfiguration.initProcessInstanceManagerFactory(SessionConfiguration.java:302)
at org.drools.SessionConfiguration.getProcessInstanceManagerFactory(SessionConfiguration.java:291)
at org.drools.common.AbstractWorkingMemory.<init>(AbstractWorkingMemory.java:367)
at org.drools.common.AbstractWorkingMemory.<init>(AbstractWorkingMemory.java:295)
at org.drools.common.AbstractWorkingMemory.<init>(AbstractWorkingMemory.java:259)
at org.drools.reteoo.ReteooWorkingMemory.<init>(ReteooWorkingMemory.java:96)
at org.drools.reteoo.ReteooStatefulSession.<init>(ReteooStatefulSession.java:80)
at org.drools.reteoo.ReteooRuleBase.newStatefulSession(ReteooRuleBase.java:386)
at org.drools.reteoo.ReteooRuleBase.newStatefulSession(ReteooRuleBase.java:371)
at org.drools.impl.KnowledgeBaseImpl.newStatefulKnowledgeSession(KnowledgeBaseImpl.java:172)
at org.drools.impl.KnowledgeBaseImpl.newStatefulKnowledgeSession(KnowledgeBaseImpl.java:155)
Please help us in this regard.
Thanks
sudhir.
15 years, 10 months
where to find version 4.2.2GA in svn?
by Alex.Porras＠dds.net
Hello,
I purchased a copy of Paul Browne's "JBoss Drools Business Rules", and am
trying to learn Guvnor via the book's examples. However, they are written
for use in drools 4.2.2GA and seem to be incompatible with version 5.1.
So, I am going the "download and build source" route. Browsing the SVN
tree, this seems to be the closest tag to a "4.2.2GA" version I could
find.
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/tags/DROOLS_SOA_4_2_1...
Could someone be so kind as to confirm whether this is the correct tag for
that release, or point me in the right direction?
Regards,
Alex
15 years, 10 months
Grouping of rules in Guvnor GUI
by Swapnil Sawant
Hi,
How can I achieve grouping of rules through Guvnor GUI ?
For example,
Lets say I have created Rule 1 , Rule 2 , Rule 3 and Rule 4 by using "Guvnor GUI only".
Now , I want to group Rule 1 and 2 in "RuleGrp1" and Rule 3 and 4 in "RuleGrp2" using "Guvnor GUI only".
I have heard about "agenda-group" in DRL files. But , I don't wish to write this attribute in DRL files(in other words,I want to avoid writing DRL file manually) and then run the RuleGroup.
I want this whole process of creating and grouping of rules to be done "only using Guvnor" , so that I can point to the resulting binary package URL directly in my changeset.xml and start firing rules in my application.
Can any one pl help me in finding how to achieve this ?
Thanks & Regards,
Swapnil Sawant
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15 years, 10 months
Getting rule's body to application.
by tom ska
Hello,
what I want to do, is to get rule's body(rule's code written in DRL). For
example: I have a ConsequenceException, and I can get rule's name, and
package this way:
.
.
.
catch (ConsequenceException e) {
e.getRule().getName();
e.getRule().getPackageName();
}
But for me it is not enough. I want to see rule's code. haw can I get it?
Thanks,
tom.
15 years, 10 months
Problem with importing DrlParser and XmlDumper classes.
by tom ska
Hi,
I have problem with importing and using DrlParser & XmlDumper classes. In
Eclipse I get thoose communicate:
"Discouraged access: The type DrlParser is not accessible due to restriction
on required library [path hier]\drools-compiler.jar"
I googled this problem (maybe not too long) but I haven't found a solution.
I want to mark, that my Eclipse configuration is correct - I don't get
error, but only warning. But this is annoying :) I tried to look in docs,
but Drools 5.1 has no javadocs, and in Drools 5.0.'s javadocs there are no
DrlParser and XmlDumper classes! Why? (In Drools 5.1. Expert User Guide
4.11.4 is written that Drools 5.1. uses those classes). I don't understand
what's going on :)
Greetings,
tom.
15 years, 10 months
How can I know, how many facts are processed by stateFulSession?
by tom ska
Hello,
I have a class and rule:
class CTestObj
{
private double value;
void setValue(double v) {
this.value = v;
}
double getValue() {
return this.value;
}
}
rule "r1"
when
p : CTestObj
then
p.setValue( 1 / p.getValue() );
end
As you can see, in this rule, there is risk, to put into stateFulSession
object with value set 0. I can't validate this, because, this problem has a
variation where I put into stateFulSession object with set no 0, but the
rule will modify it...
So - I can't validate this = fact with value 0 is correct.
But I process with stateFulSession many, many facts... For example 1000.
And, after 900 facts it occurs, that fact number 901 has value set on 0. In
effect I get an exception: org.drools.runtime.rule.ConsequenceException:
java.lang.ArithmeticException: / by zero. And ksession stops processing
facts. But, 900 facts are processed! I don't want to process them second
time.
And this is my question:
How can I know, which fact is first no-processed fact? Which one stoped
fireAllRules method?
Beacuse I don't want to process them another time.
Greetings :)
tom.
15 years, 10 months
Archived documentation for Drools 3?
by Alexandros Karypidis
Hi all,
The Drools web site only has the docs/tutorials/etc for version 4
onwards. I am looking for archived documentation of Drools version 3.x.y
(I am new to Drools and need to work on a legacy application written
with that version). Does anyone happen to have it?
Kind regards,
Alexandros
15 years, 10 months
Re: [rules-users] copyright violation issue on Drools
by Mark Proctor
On 01/09/2010 02:27, 山本 裕介 wrote:
> Richard's answer was:
> - I am actually currently on PTO but will get back to you as soon as practicable when I return.(Aug 21)
> - We will not be removing those changes. Please do not continue asking about this matter.(Aug 31)
Yusuke Yamamoto,
A mailing list is not the right place to raise legal questions, there
won't be many lawyers on here. I made my own opinion on how OSS
licensing works very clear and the need for certainty. If you think I'm
wrong then go through the Red Hat legal department and i'll obide by
their decision.
Whatever your dispute is with Red Hat, don't take it out by needlessly
harrasing my community and throwing your toys out of the pram; it won't
achieve anything other than to make yourself look like a very troubled
individual.
I've been as polite as I can, but you've harassed us on irc recently,
despite me politely pleeding with you to leave and then decided to paste
your own stupidity (irc log) into jira https://jira.jboss.org/o
browse/JBRULES-2660. Now your pasting private conversations into public
forums on a topic that no one on here cares about.
If you think your grievances are real and not achieving satisfaction
directly with the Red Hat legal department, then seek legal council and
do it through the proper channels, otherwise STFU.
My guess is you are hoping to achieve your spiteful aims by being a
bully and publicly harassing Red Hat communities and trying to publicly
embarass Red Hat, your former employer. Unfortunately, for you, the only
thing you are achieving is leaving a trail of google search results for
your future employers to find, that will be on the internet FOREVER. Do
you want them to form their opinion of youself from this thread?
So do yourself and your career a favour, take a holiday, go relax and
put this behind you. Move forward with your life as you won't achieve
anything positive going going down this route.
I think it's at times like this we can all learn a thing or two from
Grand Master Yoda - "Fear is the path to the dark side. Fear leads to
anger. Anger leads to hate. Hate leads to suffering."
Mark
PS. My advice is for you not to reply to this, and let this thread die
here, nothing positive for you can be achieved.
> That's why I post this matter to this list.
>
> On Sep 1, 2010, at 6:19 AM, Mark Proctor wrote:
>
>> Because this is a legal matter no one in my team can do anything or discuss anything with you, we've been instructed that everything must go through RHT legal. Please discuss this directly with Richard Fontana: rfontana(a)redhat.com
>>
>> Mark
>>
>>
>> On 31/08/2010 17:41, 山本 裕介 wrote:
>>> I have consulted RH legal dept. only to get no meaningful response.
>>> I guess Edson is the one who commit most of these files.
>>> The how and why they need to be uncommitted is attached to the Jira issue.
>>>
>>> Thanks,
>>> Yusuke
>>>
>>> On Sep 1, 2010, at 1:34 AM, Mauricio Salatino wrote:
>>>
>>>> Hi Yusuke, good question. I'm not sure where is the right place, but you are only asking to rollback your changes right?
>>>> who commit all your contributions to the jboss repo?
>>>> I also saw that you mention: "For several reasons, I decided to withdraw those contributions introduced from my spare time. "
>>>> can you mention those reasons? so we, as community can learn why you want to remove your contributions. I'm just curious.
>>>> Greetings.
>>>>
>>>>
>>>> On Tue, Aug 31, 2010 at 12:50 PM, 山本 裕介<yamamoyu(a)gmail.com> wrote:
>>>> Where is the appropriate forum for copyright issues?
>>>>
>>>> On Sep 1, 2010, at 12:45 AM, Greg Barton wrote:
>>>>
>>>>> This is not the appropriate forum for copyrighgt issues.
>>>>>
>>>>> GreG
>>>>>
>>>>> On Aug 31, 2010, at 9:40, 山本 裕介<yamamoyu(a)gmail.com> wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> There's a copyright violation issue on Drools 5.1 release.
>>>>> Please remove the changes listed in the following issue.
>>>>> https://jira.jboss.org/browse/JBRULES-2660
>>>>>
>>>>> Thanks,
>>>>> Yusuke
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>> rules-users(a)lists.jboss.org
>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>> rules-users(a)lists.jboss.org
>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>
>>>> _______________________________________________
>>>> rules-users mailing list
>>>> rules-users(a)lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>
>>>>
>>>>
>>>> --
>>>> - CTO @ http://www.plugtree.com
>>>> - MyJourney @ http://salaboy.wordpress.com
>>>> - Co-Founder @ http://www.jbug.com.ar
>>>>
>>>> - Salatino "Salaboy" Mauricio -
>>>> _______________________________________________
>>>> rules-users mailing list
>>>> rules-users(a)lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>> _______________________________________________
>>> rules-users mailing list
>>>
>>> rules-users(a)lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
15 years, 10 months
