LHS compare two lists
by lnguyen
Hi,
I'm trying to determine if a user has the required certifications for a
position. So I'm comparing the list of required certifications to the list
of User Certifications but I'm throwing a nullPointerException even though I
check to make sure the list are not null on their respective objects. How do
I iterate between both list?
rule "Determine if the user has the required certifications"
dialect 'mvel'
no-loop true
salience 80
when
$user : User()
$profile : UserProfile($userCertifications : userCertifications,
eval(userCertifications != null)) from $user.userProfile
$position : Position($certifications : requiredCertifications,
eval(requiredCertifications != null))
exists ($certification: Certification() from $certifications and
UserCertification(certification == $certification) from $userCertifications)
then
System.out.println("The user has the required certifications");
end
public UserProfile
{
List<UserCertification> userCertifications;
//more fields
}
public Position
{
List<Certification> requiredCertifications;
//more fields
}
public Certification
{
Long id;
String name;
//more fields
}
public UserCertification
{
Long id;
Date certificationDate;
Certification certification;
//more fields
}
--
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13 years, 9 months
Drools flow and BPEL (Drools 5.1)
by tim
Hello,
I am studying how to integrate Drools 5.1 into our product. And we will need
a BPEL engine embedded in Drools. I read from the "Drools Flow User Guide"
that "the Drools Flow engine is based on a generic process engine that
allows the definition and execution of different types of process languages,
like for example our RuleFlow language, WS-BPEL ..." But I can't find any
documentation or examples available for using BPEL in Drools. If you have
done something similar, please let me know. Any suggestion will be helpful!
Thanks in advarce!
--
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13 years, 9 months
drools syntax highlighting editor
by Matt Young
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
is there a drools syntax highlighting widget along the lines of
tinymce for regular html pages. I'm certain there is a seam or JSF
component but my application is a JSP based springmvc application and
I would like to not have to migrate to something else, just to
provided a good rules editor in my application.
- --
Cheers,
Matt Young
solid(a)youngdev.net
http://youngdev.net
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Yfnqz1SoEgcKW2Cd8KjQ7ELihP9PGFfwCAvLZv+A1fIGIgqNRY/bKVIo+cB0s8Pb
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13 years, 9 months
Re: [rules-users] Welcome to the "rules-users" mailing list
by Aman
Hello,
I can see Drools 5.1 is going to add support for Spring integration.
How about Seams, I think it is already integrated, because in all
presentations, I haven't seen anyone referring to Seam.
Thanks
-----Original Message-----
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13 years, 9 months
Re: [rules-users] Perfromance issues and memory leaks in Drools (Edson Tirelli)
by Nikhil S. Kulkarni
Hi Edson,
Thanks for the information.
But now I want to ask you one thing. I have seen your post. The problem in application is mainly usage of memory
You posted that Match 30,2010. I downloaded Drools 5.0 on August 2009 and I am using that.
SO this "True modify" algorithm is implemented in Drools 5.1 only or it is even available in latest Drools 5.0
If I use Drools 5.1 then Whether I will get any advantage.
In application we are using Rules Template ,Rule Flows and drls. When I am calling Rules from Java then it is taking more time compared to calling Java method from rules.
In addition to this can u suggest me how to write better rules Query.
I am using very simple way of writing Rules Query like :-
When
Abc : ABC(condition==A)
Then
Call method
End;
Thanks & Regards,
Nikhil S. Kulkarni
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of rules-users-request(a)lists.jboss.org
Sent: Friday, September 17, 2010 9:30 PM
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Subject: rules-users Digest, Vol 46, Issue 58
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Today's Topics:
1. Re: Perfromance issues and memory leaks in Drools (Edson Tirelli)
----------------------------------------------------------------------
Message: 1
Date: Fri, 17 Sep 2010 11:04:55 -0400
From: Edson Tirelli <tirelli(a)post.com>
Subject: Re: [rules-users] Perfromance issues and memory leaks in
Drools
To: Rules Users List <rules-users(a)lists.jboss.org>
Message-ID:
<AANLkTinr2-+twT_myOijf1rc_wAw7E6CVtwjPNGKBOb_(a)mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
Nikhil,
Maybe you are using the term "memory leak" loosely here, but otherwise,
Drools 4.0.7 and Drools 5.0.1 were both tested to exhaustion for memory
leaks and I can tell you that no memory leak was found, and I personally
doubt there is one there on regular use. Also, FYI, Drools 5.x eliminates
the need for shadow facts, what is a considerable memory save over 4.x, but
adds some other overheads for performance improvement that kind of offset
those gains. On the other hand, Drools 5.1.1 takes the algorithm to a new
level, saving a lot of memory on systems that use modify actions on their
rules.
http://blog.athico.com/2010/03/drools-halves-memory-use-with-new-true.html
Regarding your performance, all I can tell you is that a rules engine is
a relational engine that works pretty much like a database, and rules as
databases queries. The same way you can write SQL queries that run fast or
slow on a database, you can write rules that run fast or slow on a rules
engine. It all depends on how the rules/queries are written, how your data
model/domain model looks like, etc.
So, regarding your question, we can't tell you how to improve those
metrics without knowing your domain model, rules and etc.
[]s
Edson
2010/9/17 Nikhil S. Kulkarni <Nikhil.Kulkarni(a)mastek.com>
> Hi,
>
>
>
> I have written 2 different Drools programs. One is with
> Using rule Base of Drools 4.0 and other is using Knowledge Base of Drools
> 5.0.
>
> I was trying to check that is there any improvement in Drools 5.0. But I
> haven?t got any performance improvement in Drools 5.0 code compared to
> Drools 4.0.
>
>
>
> One more important thing is I am calling this drools code
> from My application which itself is heavy application, when I am doing
> Performance tuning
>
> I got one point i.e. session.execute() method is taking around 6-7 seconds
> to initialize rules and even the memory utilized by Rules is huge.
>
>
>
> So is there any way that we can reduce the Memory leakage and improve
> performance.
>
>
>
> Waiting for Reply.
>
>
>
> Thanks & Regards,
>
> Nikhil S. Kulkarni
>
> Emp No: - 9254
>
>
>
>
>
> MASTEK LTD.
> In the US, we're called MAJESCOMASTEK
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server.
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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13 years, 9 months
Fwd: Early bird registration ENDS TODAY: Rules Fest 2010
by Edson Tirelli
Hey people,
I am glad to see that people are registering for the bootcamp (and the
conference)! Hope to meet you all there! If you've never been to Rules Fest
before (this is the 3rd year it is happening), it is the only technical,
no-fluff, conference in Rules Engines and related technologies that I know
of. I had a great time last 2 years and I know it will not be different
this year.
And for those that did not registered yet, just a reminder, the early
bird discount ends today as per the e-mail bellow.
Edson
---------- Forwarded message ----------
From: Rules Fest Association <Rules_Fest_Association(a)mail.vresp.com>
Date: 2010/9/17
Subject: Early bird registration ENDS TODAY: Rules Fest 2010
To: tirelli(a)post.com
International Rules Fest 2010 Conference
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More info on Bootcamps...<http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/ba8eec...>
Hi ,
Dozens of the world’s top thinkers, developers , architects, engineers and
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and
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Contact Information: Rules Fest Association, Inc.
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
13 years, 9 months
Perfromance issues and memory leaks in Drools
by Nikhil S. Kulkarni
Hi,
I have written 2 different Drools programs. One is with Using rule Base of Drools 4.0 and other is using Knowledge Base of Drools 5.0.
I was trying to check that is there any improvement in Drools 5.0. But I haven't got any performance improvement in Drools 5.0 code compared to Drools 4.0.
One more important thing is I am calling this drools code from My application which itself is heavy application, when I am doing Performance tuning
I got one point i.e. session.execute() method is taking around 6-7 seconds to initialize rules and even the memory utilized by Rules is huge.
So is there any way that we can reduce the Memory leakage and improve performance.
Waiting for Reply.
Thanks & Regards,
Nikhil S. Kulkarni
Emp No: - 9254
MASTEK LTD.
In the US, we're called MAJESCOMASTEK
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
13 years, 9 months
How to activate/deactivate a rule.
by Ritesh
Hi,
I have 3 rules in my drl file and want the last one should get fired only
after all the facts in rule1 and rule2 gets inserted in working memory.
Please see below code for more understanding. Please suggest.
Thanks
declare DistinctAT
d_auditT : String
end
declare ActualSum
auditT : String
sumOfThree : BigDecimal
end
rule "insert combined sum"
dialect 'java'
when
ABC( $a:A, $b:B, $c:C )
then
BigDecimal actSum = $c.multiply(0.13);
ActualSum $as = new ActualSum();
$as.setAuditT($a);
$as.setSumOfThree(actSum);
insert($as);
System.out.println("AT :" + $movAuditT);
end
rule "insert distinct AT"
dialect 'java'
when
$a : ActualSum( $AT : auditT )
not DistinctAT( d_auditT == $AT )
then
DistinctAT $disAT = new DistinctAT();
$disAT.setD_auditT($AT);
insert($disAT);
System.out.println("Done!");
end
rule "Get Sum Group by AT"
dialect 'java'
when
DistinctAT( $dAT: d_auditT )
$total : Double()
from accumulate( ActualSum( auditT == $dAT, $actSum_Main : sumOfThree ),
sum( $actSum_Main ) )
eval(
chkRuleExpre( $total,$lfna_SEI,$r_SEI )
)
then
System.out.println("Done Main Rule, total :" + $total);
end
--
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13 years, 9 months
