[rules-users] rules-users Digest, Vol 33, Issue 60
Nilima R
Nilima.R at tcs.com
Fri Aug 21 09:10:39 EDT 2009
Hi
I am new to Drools have developed one project using jsp,servlet and drools
.But there is some problem the rule file don't get called .I have attached
the project in zip format.Could you please let me know the cause of the
problem.
Thanks
Nilima Rajendra Raichandani
Tata Consultancy Services
Mailto: nilima.r at tcs.com
Website: http://www.tcs.com
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Today's Topics:
1. Re: "extends" in rules (Chandana Pingle)
2. RuleML-2009: Second Call for Submissions to the 2009 Rules
Challenge (Wolfgang Laun)
3. Drool Flow persistence Doubt (Pardeep.Ruhil at lntinfotech.com)
4. Re: Maps in Drools (Edson Tirelli)
----------------------------------------------------------------------
Message: 1
Date: Fri, 21 Aug 2009 13:22:20 +1000
From: Chandana Pingle <chandana.pingle at intunity.com.au>
Subject: Re: [rules-users] "extends" in rules
To: Rules Users List <rules-users at lists.jboss.org>
Message-ID:
<c93048200908202022g5411cd71s306b5ea9c6ff4193 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Thanks for ur reply
That works if i put everthing in one rule.
When using extends and trying to access the variable in RHS of sub rule
error in the editor is
Builder Error:Internal Error:Unable to find declaration in list while
generating the consequence invoker
Thanks
Chandana
On 8/21/09, mrhoden at franklinamerican.com <mrhoden at franklinamerican.com>
wrote:
> It should work fine, the entire LHS is basically copied to the second
> rule. Just try it with it all in one rule and make sure you syntax is
> correct.
>
> -Michael
>
> On Aug 20, 2009, at 8:30 PM, Chandana Pingle
> <chandana.pingle at intunity.com.au
> > wrote:
>
>> Hi,
>>
>> I found an example on using "extends" to extend a rule from another
>> rule.
>> Using extends would only include the WHEN side of the rule.
>>
>> I want to use the variable defined in the parent rule in sub rule
>> ,something like below example,how do i do that?
>>
>> rule A
>> when
>> $a:String( )
>> eval($a=="abc")
>> then
>> do something
>> end
>>
>> rule B extends A
>> when
>> $b:String( )
>> $c:SomeClass()
>> then
>> $c.someMethod($a,$b) //i am not able to use $a here
>> end
>>
>>
>> Any suggestions?
>>
>> Thanks
>> Chandana
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
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------------------------------
Message: 2
Date: Fri, 21 Aug 2009 12:58:58 +0200
From: Wolfgang Laun <wolfgang.laun at gmail.com>
Subject: [rules-users] RuleML-2009: Second Call for Submissions to the
2009 Rules Challenge
To: Rules Users List <rules-users at lists.jboss.org>
Message-ID:
<17de7ee80908210358w416da0eck2d19ad81288a7ecf at mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
[Our apologies if you receive duplicates of this posting]
3rd International Rules Challenge
at
RuleML-2009
co-located with the Business Rules Forum
November 5-7 2009, Las Vegas, Nevada, USA
http://2009.ruleml.org/challenge
====================================================================
Second Call for Submissions to the 2009 Rules Challenge
====================================================================
The Rules Challenge is one of the highlights at RuleML-2009. Submissions
are bound to come to the attention of a wide audience, for reasons
outlined below. The goal of the Rules Challenge is to encourage any
work of practical relevance in the field of Rule Based Applications,
spanning the range from research to industry.
* What to submit
Submission topics may come from a wide range of the field, such as
(but not limited to) the following:
- best practice solutions, e.g., design patterns and architecture models;
- case studies and experience reports describing novel or interesting
solutions and use cases;
- benchmarks and other evaluations of rule-based systems;
- tools for manipulating rules and related data in existing or
emerging standards (e.g., RuleML, RIF, SBVR, PRR,...) or commercial
rule-based system implementations;
- engineering methods for development and deployment of rule-based
solutions.
Authors are invited to submit original contributions of practical
relevance and technical rigor in the field.
A submission should consist of a paper (typically of 4-8 pages) describing
any theoretical foundation, implementation issues, technical details and
collected results of your work. If applicable, a demonstration program
illustrating your development would be highly valued.
* Publication and Review
Peer-reviewed papers, which must be in English, will be published
in additional special Challenge proceedings, to be published (as
CEUR proceedings www.CEUR-WS.org), along with the online publication
of your demo in the highly visible growing Rules Challenge pool
(http://ruleml-challenge.cs.nccu.edu.tw). To ensure high quality,
submitted papers will be carefully peer-reviewed by 3 PC members
based on originality, significance, technical soundness, and clarity
of exposition. A selection of revised papers from the Challenge will
be resubmitted to a special issue of a journal.
* Where to submit
The RuleML-2009 Challenge papers submission website:
http://www.easychair.org/conferences/?conf=2009ruleschallenge
Please upload all submissions as PDF files in LNCS format
(http://www.springer.de/comp/lncs/authors.html).
The RuleML-2009 Demonstration systems submission website:
http://ruleml-challenge.cs.nccu.edu.tw
Alternatively, your demo could be provided online, as a Web service,
or for downloading from a site of your choice. Links to product demos
should be password-protected: please submit a password for anonymous
login from any Web browser, giving us the permission to pass the
password on up to 5 PC members.
* Why you should participate
RuleML-2009, the 3rd International Symposium on Rules, Applications and
Interoperability in Las Vegas, Nevada, USA, is one of the most attractive
international conferences, now being in the top 100 venues for scientific
impact factor in CiteseerX. Being this year collocated with the 12th
Business Rules Forum, the world's largest Business Rules event, it is
guaranteed to bring your contribution to the attention of the widest-ever
audience.
The participants of the Challenge will have the opportunity to be part
of the latest trends in rule technology and standards development
through high-density interaction with the experts in this field.
Last, but not least - there are prestigious prizes to be won!
* Important Dates
September 4th ? submission deadline for demo papers and systems
September 15th ? notification of accepted demo papers and systems
October 22th - submission deadline for demo systems without papers
October 29th - notification of accepted demo systems without papers
MAKE RULEML-2009 YOUR SHOWCASE!
* 2009 Rules Challenge Program Committee
See Challenge website http://2009.ruleml.org/challenge.
===================================================================
About RuleML-2009
===================================================================
This year, the 3rd International Symposium on Rules, Applications and
Interoperability (RuleML-2009) takes place in Las Vegas, Nevada, USA,
collocated with the 12th Business Rules Forum, the world's largest
Business Rules event. RuleML-2009 is devoted to practical distributed
rule technologies and rule-based applications. The International
Symposium on Rules, Applications and Interoperability has evolved
from an annual series of international workshops since 2002,
international conferences in 2005 and 2006, and international symposia
since 2007, and is now in the top 100 venues for scientific impact
factor in CiteseerX (http://citeseerx.ist.psu.edu/stats/venues).
===================================================================
Supported by
===================================================================
W3C, OMG, ACM, AAAI, ECCAI, IAAIL, ACM, Belgian Business Rules Forum MIT
Sloan CIO Symposium, EPTS, BPM Forum Belgium
===================================================================
Sponsored by
===================================================================
BBN Technologies
Franz Inc
NICTA (National ICT Australia) Ltd
Corporate Semantic Web
Logic Programming Associated Ltd
ruleCore
JBoss
Modelsystems Ltd
(Sponsoring opportunities: http://2009.ruleml.org/sponsors)
===================================================================
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Message: 3
Date: Fri, 21 Aug 2009 16:48:24 +0530
From: Pardeep.Ruhil at lntinfotech.com
Subject: [rules-users] Drool Flow persistence Doubt
To: rules-users at lists.jboss.org
Message-ID:
<OFB3F49208.F7425B5B-ON65257619.0036268B-65257619.003D9903 at lntinfotech.com>
Content-Type: text/plain; charset="us-ascii"
Hi Users,
I am having a doubt regarding the Drools Workflow in my scenario.
I want to integrate Drools Flow in my application and have some doubts
regarding the
persistence of Workflow process instances.
Let suppose I have a workflow running in my application and at point
my application crashed or i restart my application. So is their way i can
restart the workflow the point it was.
If i store the process instance Id in the database, so am I able to start
my workflow process
from where it had stopped , if it is possible can you tell me the method
responsible for the same.
Please help me to get through the situation.
Thanks & Regards
Pardeep Ruhil
L&T Infotech Ltd
Mumbai
Ph: +919820283884
Larsen & Toubro Infotech Ltd.
www.Lntinfotech.com
This Document is classified as:
L&T Infotech Proprietary L&T Infotech Confidential L&T Infotech
Internal Use Only L&T Infotech General Business
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Message: 4
Date: Fri, 21 Aug 2009 08:47:13 -0400
From: Edson Tirelli <tirelli at post.com>
Subject: Re: [rules-users] Maps in Drools
To: Rules Users List <rules-users at lists.jboss.org>
Message-ID:
<e6dd5ba30908210547w4d8f7fdex24da77138a1ae077 at mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
Andre,
The misunderstanding here is that the LHS, except for code blocks like
"eval", "return value expressions" and "accumulate code blocks", are all
"Drools Language". When you use the "dialect" attribute in a rule or
package
you are telling the compiler what dialect (MVEL or Java) you will use
inside
these code blocks mentioned previously + the language for the RHS.
In other words:
Map( this["type"] == "Point", $x : this["x"], size == 5 )
Everything you see in the previous expression is "Drools language",
does
not matter if you set the dialect to java or mvel in the rule. It happens
that Drools uses the same map syntax as MVEL (and a lot of other scripting
languages). Also, we know, that drools implementation will resolve the
first
2 above expressions in MVEL behind the scenes, and the 3rd will be
resolved
nativelly, but that is not something users should have to worry about,
since
they are writing it in "Drools Language".
If they write an eval, THEN they need to differentiate between MVEL
and
Java according to the chosen dialect.
rule xyz
dialect "mvel"
when
eval( ...here you write MVEL code... )
then
// here you write MVEL code
end
rule xyz2
dialect "java"
when
eval( ...here you write JAVA code... )
then
// here you write JAVA code
end
[]s
Edson
2009/8/20 Andr? Thieme <address.good.until.2009.dec.14 at justmail.de>
> Edson Tirelli schrieb:
> >
> > ooops... correct version:
> >
> > when
> > Map( this["type"] == "Point", $x : this["x"] )
> > Map( this["type"] == "Circle", this["x"] == $x )
> > then
> > end
>
> Okay, so in the mvel syntax this is possible.
> Can this also be achieved in the default rule syntax, without mvel?
>
> The mvel syntax needs to be interpreted at runtime, so my Clojure lib
> will have to output rules in Drools' native rule language.
>
> What interests me most is that first part:
> Map( this["type"] == "Point", $x : this["x"] )
>
>
> Andr?
> --
> Lisp is not dead. It?s just the URL that has changed:
> http://clojure.org/
> _______________________________________________
> rules-users mailing list
> rules-users at 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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