This has indeed been discovered recently, for certain scenarios where
activations were queued in the wrong order after fact modification.
The fix is in
./drools-core/src/main/java/org/drools/core/util/BinaryHeapQueue.java:
--- a/drools-core/src/main/java/org/drools/core/util/BinaryHeapQueue.java
Anybody had the same issue?
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Wolfgang,
Thanks again for the reply! However, after much testing, I'm still having
problems with Drools Server parsing the JSON array. My current test DRL is:
==
package com.foobar
declare Person
name: String
hobbies: java.util.ArrayList
end
rule
Thanks for reply. If we use free from DSL, the problem I encountered we
cannot make Test Scenario's in Guvnor for free form DSL.
Is there workaround to make test scenarios for free from DSL(Technical
Assets) in Drools.
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Hi Chris,
since you mention to already have a support license for JBoss Enterprise
BRMS, the best place to ask these types of questions is at the excellent
JBoss Customer Support Portal (https://access.redhat.com/home) where
your question will be handled under SLAs ensuring timely response and
I am finding that the "salience" feature is acting very erratically.
Some of my rules modify the working memory. So I would like them to
execute before the others that simply read the memory after modification
and report on certain data conditions that are left after all
modifications have hap
Drools has drools-verifier that performs certain (expandable) validation and
verification checks.
http://community.jboss.org/wiki/DroolsVerifier
2011/4/27 Guy Moas
> Hi,
>
>
>
> Could you please let me know whether Drools has no rule
> validation/completeness capabilities.
>
>
>
> Regards,**
>
While having a closer look at your stack trace I realise I should modify the
pointcut to include the execution of the "matches" methods. So it'd end up
looking something like this:
pointcut isAllowed(Object o) : (execution(boolean *.isAllowed*(..)) ||
execution(boolean *.matches(..))) && targ
Hi,
Could you please let me know whether Drools has no rule
validation/completeness capabilities.
Regards,
Guy Moas - Technical Project Manager
tel: +972 (73) 2608276 | mobile: +972 (52) 3624583 | X-Lite: 8276 | fax:
+972 (73) 2608205
gm...@fis-software.com
Hi Liron,
Are you planning on using a stateful or a stateless session afterwards? Do
you have the memory numbers for rules execution? How many facts?
-Leonardo.
2011/4/27 Shebs, Liron
> Hi All,
>
>
>
> Thank you all for your responses and ideas.
>
>
>
> Here are some answers to questions raise
I've added null checks everywhere mmlCommandUid is used and this seems to
allowed the rules to progress slightly further, but a similar error then
occurs, again when facts are being inserted
Caused by: org.drools.RuntimeDroolsException: Unexpected exception executing
action
org.drools.process.inst
Hi All,
Thank you all for your responses and ideas.
Here are some answers to questions raised by you
* 10,000 rules is what we estimate a real system will contain.
* The rules are similar to each other on the testing environment, but
in the real system we expect more variance,
Hi,
I have done a loyalty system with drools 4 (now they are in version 5) for a
retail company in France 3 years that calculates your discount given your
points, history, etc..
You have to put a lot of data in memory cache (ehcache for example) as the
database is the the weak point in concurrent m
On 2011/4/27 9:03, boy18nj wrote:
> Initially I thought once we create a snapshot version. It's content are
> sticky and tagged. And we cannot edit it. But I was wrong. It seems we can
> even override the contents of package snapshots.
>
Package snapshot is a tagged version, at least this is in the
Thanks Mark for the reply.
Regards,
Sumeet Karawal
Mailto: sumeet.kara...@tcs.com
From: Mark Proctor
On 27/04/2011 11:52, Sumeet Karawal wrote:
>
> Thanks Michael for the help. But, is there any benchmark or a rough figure
> like number of hits or number of rule fired per minute, for normal
> performance.
I can write one rule that runs much slower than something with 1000
rules. So we suggest peo
If you use KnowledgeAgent and poll the location of your rule assets (DRL,
DSLR, decision tables etc) then yes, I believe so.
On 27 April 2011 11:58, Sumeet Karawal wrote:
>
>
> Thanks Michael. Also for other rule resources like .drl or .dsl and using
> Drools - Expert, can we change the rules on
Not that I'm aware of (although the general "performance" topic comes up on
this forum from time-to-time, so other users may report back).
Obviously performance of rules depends on how complex they are; and whether
you then optimise them - much like "how many SQL queries can RDBMS xyz
execute per
Thanks Michael. Also for other rule resources like .drl or .dsl and using
Drools - Expert, can we change the rules on the fly.
Regards,
Sumeet Karawal
Mailto: sumeet.kara...@tcs.com
Thanks Michael for the help. But, is there any benchmark or a rough figure
like number of hits or number of rule fired per minute, for normal
performance.
Regards,
Sumeet Karawal
Mailto: sumeet.kara...@tcs.com
If you use a stateless session per transaction you should generally be OK.
How much lag you're likely to encounter is a much harder question to answer:
how well does your database retrieval scale, would this present an issue
before the rules engine?
The rules engine is "just a POJO library" the o
1) Please read about KnowledgeAgent, but you'd still need to upload the
revised worksheet to Guvnor.
2) Please read about AgendaEventListener's re: which rules fired. Guvnor
maintains audit history for "who" changed rules, but I'm not sure whether
there's a (public) API to retrieve this other than
Hi,
I have an Application where I have to give the discount to user according
to their profile points.
i.e. when the user logs in, his profile points are fetched from the
database, and respectively he is given the required discount.
My concern is how many concurrent users will be supported by t
Hi,
I have some queries about Drools - Guvnor :
1) Is hot deployment possible in Guvnor, how can we do that? How can we
change rules on fly? eg we are using Decision Table for rules and if we
change some data in that sheet, how will the changes get reflected in the
rule engine?
2) Does the rule
We ought to see the Java code for this class reduced to the field and its
getters:
org.drools.base.com.somecompany.prov.rulesbased.facts.ProvResponse1649170666$getMmlCommandUid
Also, we ought to see the uses of this field mmlCommandUid in your rules -
which kinds of constraints you are using where
Thanks for the replies.
MmlCommandUid is an int so I have assumed I did not need to do a null check
as an int can never be null in java. Is drools autoboxing this to Integer?
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2011/4/27 Geoffrey De Smet
> there's a maven-drools-plugin out there in the wild to precompile your
> rules.
>
> Op 27-04-11 04:27, Edson Tirelli schreef:
>
>
> Besides all suggestions already
there's a maven-drools-plugin out there in the wild to precompile your
rules.
Op 27-04-11 04:27, Edson Tirelli schreef:
Besides all suggestions already made in other e-mails, it is also
worth considering if you can pre-compile rules and just load them at
runtime instead of compiling them
I think I have an AspectJ based solution for this which consists on making
every
isAllowed* method return "false" instead of letting exceptions thrown inside
them propagate:
pointcut isAllowed(Object o) : execution(boolean *.isAllowed*(..)) &&
target(o);
boolean around(Objec
You need to use free form text or make a DSL for the function if you want to
use it in the RHS.
Toni
On Dec 1, 2010, at 7:24 AM, Pankaj Khattar wrote:
>
> Can anybody share that how to import java function in the guvnor & use them
> in writing rules in guvnor.
>
> For example i have a drl fil
The location of the NPE suggests that some field (mmlCommandUid) is null
when you insert the object, but some rule wants to access its intValue.
All fields accessed in all rules must be initialized properly; Drools does
not
guard field accesses with "!= null" for you.
-W
On 26 April 2011 20:27,
This solution is valid only for LHS, right?
What about the RHS? Seems more difficult to me, as the terminal node holds a
compiled rule.
Cheers
De: Mark Proctor
Para: rules-users@lists.jboss.org
Enviado: mar,26 abril, 2011 21:53
Asunto: Re: [rules-users] detail
Array types are not supported for the fields of types declared in DRL.
A java.util.ArrayList (no generic parameters) should work.
-W
On 26 April 2011 23:59, fulton wrote:
> I am currently using Drools Server to accept JSON-formatted insertion
> messages from a PHP application. Within the DRL f
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