[rules-users] Bug: equally named functions in different .drl files
If there are two different .drl files in the same package each of which
contains a function with name x, and if we have calls to x in both files,
expecting to call the local x, respectively:
(a) if the function signatures are identical, then this compiles without
errors, but at runtime only one of these functions will be called.
(b) if the signatures differ, you get inexplicable error messages for
correct calls, i.e.:
Rule Compilation error : [Rule name='Look4Beat']
appl/vote/Rule_Look4Beat_0.java (7:380) : The method foo(String, String)
in the type Foo is not applicable for the arguments (String)
As a test case for (a), use the file below and another one substituting '1'
by '2':
package x.y;
function void foo(String s ){ System.out.println( foo 1: + s ); }
rule Object 1
when
Object()
then
foo( in file 1 );
end
Presumably the class names for functions cannot be derived from the function
name alone.
-W
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] retrieving streams/entry points from java api
Chris,
That is indeed missing in the public API. I am adding it as we speak,
thanks for bringing that up:
https://jira.jboss.org/jira/browse/JBRULES-2285
Meanwhile, until we release the new version, the workaround is to
downcast the interface:
*for*(WorkingMemoryEntryPoint entry : session
.getWorkingMemoryEntryPoints()){
System.*err*.println(entry point
stream: +
((InternalWorkingMemoryEntryPoint)entry).getEntryPoint().getEntryPointId());
}
Edson
2009/9/29 Chris Richmond crichm...@referentia.com
Hello,
I am trying to determine, iterate the working memory streams within my rule
by doing the following:
*for*(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.*err*.println(entry point
stream: + entry.toString());
}
But I can find no method/way to finid the actual text name of the entry
point(what is written in the rule as from entry-point “”).
Is there a way to do this? To list the readable names of the entry points
from your session? I would like to list those entry points in a drop down
as application profiles, so if they have one selected, one entry point of
rules will be inserted to and so on..
Thanks,
Chris
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Getting Guvnor to work with HttpClient 3.0
Hi, I'm making some modifications to guvnor, and would like to make it play nice with httpclient 3.0.1 . However there seems to be a conflict because jboss-common-core depends on httpclient 2.0.2. Has anybody got suggestions to make the two play nice ? Regards, Alan Ho ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] (no subject)
Hello Drools Users, I've been looking into why Drools 5 is logging debug and info messages to System.out in my app and trying to figure out how to make it stop. It looks like the SystemEventListener that the SystemEventListenerFactory returns is a DelegatingSystemEventListener that delegates to a PrintStreamSystemEventListener. This, by default, uses System.out as the print stream target. I looked into the Factory and it looks like I can provide a different SystemEventListener or SystemEventListenerProvider, but it also mentions that it did not find anything in the properties, so it fails over to the default SystemEventListenerProvider. Is there a way to configure a custom SystemEventListener or SystemEventListenerProvider so that you don't have to call SystemEventListenerFactory.setSystemEventListenerProvider() at startup? Thanks, Steve Ronderos___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] ORF 2009 Keynote Speaker Announcement
Sorry for the cross-posting, but it is important. -- Forwarded message -- From: James Owen jco2...@att.net Date: 2009/9/30 Subject: [0] ORF 2009 Keynote Speaker Announcement To: Chelanie Israel miss...@mac.com Cc: Rolando Hernandez rola...@bizrules.com, Greg Barton greg_bar...@yahoo.com [image: sm_headerlogo.jpg] Greetings: This will be our penultimate email about October Rules Fest 2009 - but, even though it follows closely on the heels of the previous email, it's necessary. And it's a goodie. Our *Keynote Speaker* for ORF 2009 is *Tom Cooper*, co-author of Rule-Based Programming in OPS5 by Tom Cooper and Nancy Wogrin. (Thanks to Luke Voss and Andrew Waterman for making a last-minute agenda shuffle possible.) The book is long since out-of-print but is still available in slightly used condition by many of Amazon's associated book resellers. (I saw only four used but in good condition copies at Amazon itself.) When Dr. Forgy and I were working on our first project together back in 1998, I asked him what would be the one book that a person might buy to get a good foundation on rulebased programming. This was it and I have used it many times in my classes that I teach on the subject. Side note: I also use Gary Riley's book - still in publication - to teach CLIPS (and Jess) and many others for reference; such as Jess In Action by Dr. Ernest Friedman-Hill or the Buchanan-Shortliffe magnum opus on the MYCIN project. You can see my comlete list at http://www.kbsc.com/aibooks.htmlfor more of them. Even though some (most?) of the books are out-of-print none are really out-of-date. *STUDENTS* can now register for ORF 2009 for only *$150* per person WITH a valid photo ID and a CURRENT student photo ID card. Last year we priced the whole thing at student rates and did not get a single student registeration from the USA. (We had one from the UK.) We have had several inquiries this year, some from as far away as California, and decided to put the student rate back online. Just click on the regular ORF registration link and it will give you the instructions for the special student registration process. We have two (yep, 2 of them) *BOOT CAMPS* that are co-located with ORF in The Adolphus Hotel. There will be the *Jess Boot Camp* (taught by Jason Morris) and the *Drools Boot Camp* (taught by Mark Proctor and Edson Tirelli). Even though both boot camps are headed by their individual instructors, we are posting the curriculum of both on-line with the ORF agenda. (Topics are subject to change.) Both camps have done a lot of work the past few days one defining what to expect from each of them. If you like, you really CAN attend just one of the boot camps (for a small fee to cover the cost of the meeting room and catered coffee) and not attend ORF - but why??? ORF attendees can attend either one of the boot camps free of charge. I will try and send another email before the 15th but in case that I don't, remember that the* special $129 / night room rate* for October Rules Fest 2009 attendees at The Adolphus will *EXPIRE* on the 16th !! So I urge that if you have not already registered for ORF as well as reserved a room at The Adolphus, please do so this week if possible. BTW, thanks to ALL of you who have already signed up and/or have registered at The Adolphus. The rooms are filling up. Boot Camps are filling up. And, thankfully, October Rules Fest is filling up with some great folks looking for answers to some really perplexing problems. So, if you have NOT registered, do so now. If you know of some students who want to attend, put them in touch with Chelanie who can get them registered. If all you want is one of the two greatest boot camps in the world, you can sign up just for that. But you need to sign up now!! SDG James Owen Founder October Rules Fest Senior Consultant / Architect KBSC http://www.kbsc.com http://www.OctoberRulesFest.org Twitter: OctRulesFest Blogs: http://JavaRules.blogspot.com [Rulebased Systems Blog] http://ORF2009.blogspot.com [October Rules Fest Blog] http://exscg.blogspot.com/ [Expert Systems Consulting Group Blog] *If I have seen a little further it is by standing on the shoulders of giants.* *Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676* * * *Come to October Rules Fest and stand on the shoulders of the Giants of the industry; if only for a week.* -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com sm_headerlogo.jpg___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] retrieving streams/entry points from java api
Ed,
Thanks a lot. I am thinking about comding to Drools boot camp in Dallas? In
late October. If not that one than the next one. Will you be there? I
feel it would be beneficial to have some time to get over the hump with
using Drools and Fusion to it's full potential. That way I can give you
guys my use cases and discuss a proper Drools strategy.
Thank,
Chris
_
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Wednesday, September 30, 2009 4:45 AM
To: Rules Users List
Subject: Re: [rules-users] retrieving streams/entry points from java api
Chris,
That is indeed missing in the public API. I am adding it as we speak,
thanks for bringing that up:
https://jira.jboss.org/jira/browse/JBRULES-2285
Meanwhile, until we release the new version, the workaround is to
downcast the interface:
for(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.err.println(entry point stream:
+
((InternalWorkingMemoryEntryPoint)entry).getEntryPoint().getEntryPointId());
}
Edson
2009/9/29 Chris Richmond crichm...@referentia.com
Hello,
I am trying to determine, iterate the working memory streams within my rule
by doing the following:
for(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.err.println(entry point stream:
+ entry.toString());
}
But I can find no method/way to finid the actual text name of the entry
point(what is written in the rule as from entry-point ).
Is there a way to do this? To list the readable names of the entry points
from your session? I would like to list those entry points in a drop down
as application profiles, so if they have one selected, one entry point of
rules will be inserted to and so on..
Thanks,
Chris
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] retrieving streams/entry points from java api
Certainly, that is one of the goals of the Drools Boot Camps. I will be
there in Dallas for the boot camp and for the ORF.
More info:
http://www.octoberrulesfest.org/
http://blog.athico.com/2009/09/iii-drools-boot-camp-at-october-rules.html
http://blog.athico.com/2009/09/drools-boot-camp-dallas-october-25th.html
Just a reminder, the boot camp is completely free for ORF attendants, so
I strongly advise everyone to join both the boot camp and this awesome
conference! Check the agenda!
Cheers,
Edson
2009/9/30 Chris Richmond crichm...@referentia.com
Ed,
Thanks a lot. I am thinking about comding to Drools boot camp in Dallas?
In late October. If not that one than the next one. Will you be there? I
feel it would be beneficial to have some time to get over the hump with
using Drools and Fusion to it’s full potential. That way I can give you
guys my use cases and discuss a proper Drools strategy.
Thank,
Chris
--
*From:* rules-users-boun...@lists.jboss.org [mailto:
rules-users-boun...@lists.jboss.org] *On Behalf Of *Edson Tirelli
*Sent:* Wednesday, September 30, 2009 4:45 AM
*To:* Rules Users List
*Subject:* Re: [rules-users] retrieving streams/entry points from java api
Chris,
That is indeed missing in the public API. I am adding it as we speak,
thanks for bringing that up:
https://jira.jboss.org/jira/browse/JBRULES-2285
Meanwhile, until we release the new version, the workaround is to
downcast the interface:
*for*(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.*err*.println(entry point
stream: +
((InternalWorkingMemoryEntryPoint)entry).getEntryPoint().getEntryPointId());
}
Edson
2009/9/29 Chris Richmond crichm...@referentia.com
Hello,
I am trying to determine, iterate the working memory streams within my rule
by doing the following:
*for*(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.*err*.println(entry point
stream: + entry.toString());
}
But I can find no method/way to finid the actual text name of the entry
point(what is written in the rule as from entry-point “”).
Is there a way to do this? To list the readable names of the entry points
from your session? I would like to list those entry points in a drop down
as application profiles, so if they have one selected, one entry point of
rules will be inserted to and so on..
Thanks,
Chris
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] DBC = ORF 2009
Chris:
James here. From a purely selfish point of view, the Drools Boot Camp
in Dallas followed by the October Rules Fest would be a GREAT
opportunity for you not only to learn from the best Drools personnel,
but also to learn from the absolute best in the business for rulebased
systems. This is, to my knowledge, this is the ONLY conference
dedicated to the practicing rulebase technical person. I really
believe that you can learn more at DBC/ORF in a week than you could at
10 of the vendor schools.
Where else would you get a chance to listen to Dr. Charles Forgy, Gary
Riley, Tom Cooper, Dr. Richard Hicks, Paul Vincent, Carlos Seranno-
Morales, Dr. Daniel Levine, John Zachman and many, many others in one
week? A seminar with ANY of these would cost more than the $500 that
you would pay for ORf. Most techies go through life and NEVER get to
meet even one of these guys. Not only that, you will get to hear them
discuss among themselves and with the attendees all of the problems
that are cropping up all over the world and possible solutions. Where
else would you get to ask Dr. Forgy questions, one-on-one, about the
NEW algorithm called TECH that is at least 10 times faster than his
Rete 2 / III? Or to get into details with him about parallel
rulebased systems?
And, you never know - this could be the last ORF. There might not be
another one like this. Perhaps this sounds self-serving, but I can't
stress enough the importance of attending NOW and not putting this off
until another time. There might never be another time like this with
this particular cast of speakers.
SDG
James Owen
Founder October Rules Fest
Senior Consultant / Architect KBSC
http://www.kbsc.com
http://www.OctoberRulesFest.org
Twitter: OctRulesFest
Blogs:
http://JavaRules.blogspot.com [Rulebased Systems Blog]
http://ORF2009.blogspot.com [October Rules Fest Blog]
http://exscg.blogspot.com/ [Expert Systems Consulting Group Blog]
If I have seen a little further it is by standing on the shoulders of
giants.
Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676
Come to October Rules Fest and stand on the shoulders of the Giants of
the industry; if only for a week.
On Sep 30, 2009, at 1:13 PM, Chris Richmond wrote:
Ed,
Thanks a lot. I am thinking about comding to Drools boot camp in
Dallas? In late October. If not that one than the next one. Will
you be there? I feel it would be beneficial to have some time to
get over the hump with using Drools and Fusion to it’s full
potential. That way I can give you guys my use cases and discuss a
proper Drools strategy.
Thank,
Chris
From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org
] On Behalf Of Edson Tirelli
Sent: Wednesday, September 30, 2009 4:45 AM
To: Rules Users List
Subject: Re: [rules-users] retrieving streams/entry points from java
api
Chris,
That is indeed missing in the public API. I am adding it as we
speak, thanks for bringing that up:
https://jira.jboss.org/jira/browse/JBRULES-2285
Meanwhile, until we release the new version, the workaround is to
downcast the interface:
for(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.err.println(entry point
stream: +
((InternalWorkingMemoryEntryPoint
)entry).getEntryPoint().getEntryPointId());
}
Edson
2009/9/29 Chris Richmond crichm...@referentia.com
Hello,
I am trying to determine, iterate the working memory streams within
my rule by doing the following:
for(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.err.println(entry point
stream: + entry.toString());
}
But I can find no method/way to finid the actual text name of the
entry point(what is written in the rule as from entry-point “”).
Is there a way to do this? To list the readable names of the entry
points from your session? I would like to list those entry points
in a drop down as application profiles, so if they have one
selected, one entry point of rules will be inserted to and so on..
Thanks,
Chris
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] DBC = ORF 2009
Ed and James,
I would love to attend ORF to learn more about the science of rules engines
in general as well. I'm not sure if I can get the company to cover the cost
as well as the entire week of training days off. I also unfortunately, have
a pretty large customer meeting the actual week of ORF. Now, they have said
they are open to sending me to the Drools boot camp and that I don't have to
necessarily be there to meet the customers that week, so I might make a
pitch.
One thing about the ORF though. It seems a bit intimidating. By that I
mean I will be surrounded by domain experts whereas I know little to nothing
about rules based systems/design. I am trying to feel out Drools within a
prototype application and we do plan on using it more, but I literally
haven't had the time to do some of the more theoretical background reading
about algorithms(Rete and others) and other topics like this. I'm afraid I
would be completely lost and unable to really contribute anything to
discussions at the ORF.
I also want to be able do defend the ORF as beneificial to someone like me
if I am to sell it to my superiors and really believe it.
What are your thoughts guys?
Chris
_
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of James Owen
Sent: Wednesday, September 30, 2009 8:40 AM
To: Rules Users List
Subject: [rules-users] DBC = ORF 2009
Chris:
James here. From a purely selfish point of view, the Drools Boot Camp in
Dallas followed by the October Rules Fest would be a GREAT opportunity for
you not only to learn from the best Drools personnel, but also to learn from
the absolute best in the business for rulebased systems. This is, to my
knowledge, this is the ONLY conference dedicated to the practicing rulebase
technical person. I really believe that you can learn more at DBC/ORF in a
week than you could at 10 of the vendor schools.
Where else would you get a chance to listen to Dr. Charles Forgy, Gary
Riley, Tom Cooper, Dr. Richard Hicks, Paul Vincent, Carlos Seranno-Morales,
Dr. Daniel Levine, John Zachman and many, many others in one week? A
seminar with ANY of these would cost more than the $500 that you would pay
for ORf. Most techies go through life and NEVER get to meet even one of
these guys. Not only that, you will get to hear them discuss among
themselves and with the attendees all of the problems that are cropping up
all over the world and possible solutions. Where else would you get to ask
Dr. Forgy questions, one-on-one, about the NEW algorithm called TECH that is
at least 10 times faster than his Rete 2 / III? Or to get into details with
him about parallel rulebased systems?
And, you never know - this could be the last ORF. There might not be
another one like this. Perhaps this sounds self-serving, but I can't stress
enough the importance of attending NOW and not putting this off until
another time. There might never be another time like this with this
particular cast of speakers.
SDG
James Owen
Founder October Rules Fest
Senior Consultant / Architect KBSC
http://www.kbsc.com
http://www.OctoberRulesFest.org
Twitter: OctRulesFest
Blogs:
http://JavaRules.blogspot.com [Rulebased Systems Blog]
http://ORF2009.blogspot.com [October Rules Fest Blog]
http://exscg.blogspot.com/ [Expert Systems Consulting Group Blog]
If I have seen a little further it is by standing on the shoulders of
giants.
Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676
Come to October Rules Fest and stand on the shoulders of the Giants of the
industry; if only for a week.
On Sep 30, 2009, at 1:13 PM, Chris Richmond wrote:
Ed,
Thanks a lot. I am thinking about comding to Drools boot camp in Dallas? In
late October. If not that one than the next one. Will you be there? I
feel it would be beneficial to have some time to get over the hump with
using Drools and Fusion to it's full potential. That way I can give you
guys my use cases and discuss a proper Drools strategy.
Thank,
Chris
_
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Edson Tirelli
Sent: Wednesday, September 30, 2009 4:45 AM
To: Rules Users List
Subject: Re: [rules-users] retrieving streams/entry points from java api
Chris,
That is indeed missing in the public API. I am adding it as we speak,
thanks for bringing that up:
https://jira.jboss.org/jira/browse/JBRULES-2285
Meanwhile, until we release the new version, the workaround is to
downcast the interface:
for(WorkingMemoryEntryPoint entry :
session.getWorkingMemoryEntryPoints()){
System.err.println(entry point stream:
+
((InternalWorkingMemoryEntryPoint)entry).getEntryPoint().getEntryPointId());
}
Edson
2009/9/29 Chris Richmond crichm...@referentia.com
Hello,
I am
Re: [rules-users] DBC = ORF 2009
Chris, :) Glad to have this feedback you are giving us. So, first a disclaimer: I am in no way related to the conference organization, other than being accepted as a speaker. My recommendations are purely result of attending to it last year and having one of the best technical experiences in my professional life. Now, think about it this way: you said you are starting on rule based systems and I am sure you have questions. Would you prefer to ask these questions to some random vendor guy that will tell you that a hammer can be used as a screw-driver? Or would you like to have your questions answered by people that have years of experience doing the same kind of work you are looking for insight into? I went to lots and lots of conferences and training sessions over the years and none of them get you face to face with the people that actually *do* the stuff, but ORF. There are other good conferences, don't get me wrong, but this one allows you to deep dive in the rules based technology like no other. Check the agenda and the speaker bios. Show that to your company and I am sure you have enough ammunition to convince them. :) Hope to meet you there, Edson 2009/9/30 Chris Richmond crichm...@referentia.com Ed and James, I would love to attend ORF to learn more about the science of rules engines in general as well. I’m not sure if I can get the company to cover the cost as well as the entire week of training days off. I also unfortunately, have a pretty large customer meeting the actual week of ORF. Now, they have said they are open to sending me to the Drools boot camp and that I don’t have to necessarily be there to meet the customers that week, so I might make a pitch. One thing about the ORF though. It seems a bit intimidating. By that I mean I will be surrounded by domain experts whereas I know little to nothing about rules based systems/design. I am trying to feel out Drools within a prototype application and we do plan on using it more, but I literally haven’t had the time to do some of the more theoretical background reading about algorithms(Rete and others) and other topics like this. I’m afraid I would be completely lost and unable to really contribute anything to discussions at the ORF. I also want to be able do defend the ORF as beneificial to someone like me if I am to sell it to my superiors and really believe it. What are your thoughts guys? Chris -- *From:* rules-users-boun...@lists.jboss.org [mailto: rules-users-boun...@lists.jboss.org] *On Behalf Of *James Owen *Sent:* Wednesday, September 30, 2009 8:40 AM *To:* Rules Users List *Subject:* [rules-users] DBC = ORF 2009 Chris: James here. From a purely selfish point of view, the Drools Boot Camp in Dallas followed by the October Rules Fest would be a GREAT opportunity for you not only to learn from the best Drools personnel, but also to learn from the absolute best in the business for rulebased systems. This is, to my knowledge, this is the ONLY conference dedicated to the practicing rulebase technical person. I really believe that you can learn more at DBC/ORF in a week than you could at 10 of the vendor schools. Where else would you get a chance to listen to Dr. Charles Forgy, Gary Riley, Tom Cooper, Dr. Richard Hicks, Paul Vincent, Carlos Seranno-Morales, Dr. Daniel Levine, John Zachman and many, many others in one week? A seminar with ANY of these would cost more than the $500 that you would pay for ORf. Most techies go through life and NEVER get to meet even one of these guys. Not only that, you will get to hear them discuss among themselves and with the attendees all of the problems that are cropping up all over the world and possible solutions. Where else would you get to ask Dr. Forgy questions, one-on-one, about the NEW algorithm called TECH that is at least 10 times faster than his Rete 2 / III? Or to get into details with him about parallel rulebased systems? And, you never know - this could be the last ORF. There might not be another one like this. Perhaps this sounds self-serving, but I can't stress enough the importance of attending NOW and not putting this off until another time. There might never be another time like this with this particular cast of speakers. SDG James Owen Founder October Rules Fest Senior Consultant / Architect KBSC http://www.kbsc.com http://www.OctoberRulesFest.org Twitter: OctRulesFest Blogs: http://JavaRules.blogspot.com [Rulebased Systems Blog] http://ORF2009.blogspot.com [October Rules Fest Blog] http://exscg.blogspot.com/ [Expert Systems Consulting Group Blog] *If I have seen a little further it is by standing on the shoulders of giants.* *Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676* *Come to October Rules Fest and stand on the shoulders of the Giants of the industry; if only for a week.*
Re: [rules-users] DBC = ORF 2009
Also, we'll be having a wide range of talks, from Larry Terrill's introduction to the rete algorithm to Dr Forgy's talk on parallel rulebases, and everything in between. My talk will be low/mid level on the design of the CEP/Rulesbased project I'm working on at Southwest Airlines, and there are three other talks that focus on CEP. (including Edson's) And while there are few talks specifically focused on individual projects, we've encouraged the presenters to make their talks as concrete as possible, with examples that can provide context, even if they're generally about theory. And don't worry about being intimidated. Judging from the code you've posted to the list so far and the description of your project I doubt you'll have any problem understanding most of the conference material. And no one will judge you for asking questions and wanting to learn. That's the whole point. :) From: Edson Tirelli ed.tire...@gmail.com To: Rules Users List rules-users@lists.jboss.org Sent: Wednesday, September 30, 2009 2:29:43 PM Subject: Re: [rules-users] DBC = ORF 2009 Chris, :) Glad to have this feedback you are giving us. So, first a disclaimer: I am in no way related to the conference organization, other than being accepted as a speaker. My recommendations are purely result of attending to it last year and having one of the best technical experiences in my professional life. Now, think about it this way: you said you are starting on rule based systems and I am sure you have questions. Would you prefer to ask these questions to some random vendor guy that will tell you that a hammer can be used as a screw-driver? Or would you like to have your questions answered by people that have years of experience doing the same kind of work you are looking for insight into? I went to lots and lots of conferences and training sessions over the years and none of them get you face to face with the people that actually *do* the stuff, but ORF. There are other good conferences, don't get me wrong, but this one allows you to deep dive in the rules based technology like no other. Check the agenda and the speaker bios. Show that to your company and I am sure you have enough ammunition to convince them. :) Hope to meet you there, Edson 2009/9/30 Chris Richmond crichm...@referentia.com Ed and James, I would love to attend ORF to learn more about the science of rules engines in general as well. I’m not sure if I can get the company to cover the cost as well as the entire week of training days off. I also unfortunately, have a pretty large customer meeting the actual week of ORF. Now, they have said they are open to sending me to the Drools boot camp and that I don’t have to necessarily be there to meet the customers that week, so I might make a pitch. One thing about the ORF though. It seems a bit intimidating. By that I mean I will be surrounded by domain experts whereas I know little to nothing about rules based systems/design. I am trying to feel out Drools within a prototype application and we do plan on using it more, but I literally haven’t had the time to do some of the more theoretical background reading about algorithms(Rete and others) and other topics like this. I’m afraid I would be completely lost and unable to really contribute anything to discussions at the ORF. I also want to be able do defend the ORF as beneificial to someone like me if I am to sell it to my superiors and really believe it. What are your thoughts guys? Chris From:rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of James Owen Sent: Wednesday, September 30, 2009 8:40 AM To: Rules Users List Subject: [rules-users] DBC = ORF 2009 Chris: James here. From a purely selfish point of view, the Drools Boot Camp in Dallas followed by the October Rules Fest would be a GREAT opportunity for you not only to learn from the best Drools personnel, but also to learn from the absolute best in the business for rulebased systems. This is, to my knowledge, this is the ONLY conference dedicated to the practicing rulebase technical person. I really believe that you can learn more at DBC/ORF in a week than you could at 10 of the vendor schools. Where else would you get a chance to listen to Dr. Charles Forgy, Gary Riley, Tom Cooper, Dr. Richard Hicks, Paul Vincent, Carlos Seranno-Morales, Dr. Daniel Levine, John Zachman and many, many others in one week? A seminar with ANY of these would cost more than the $500 that you would pay for ORf. Most techies go through life and NEVER get to meet even one of these guys. Not only that, you will get to hear them discuss among themselves and with the attendees all of the problems that are cropping up all over the world and possible solutions. Where else would you get to ask Dr. Forgy questions,
[rules-users] Null-safe traversal of nested sparse maps?
Dear fellow Droolers,
[Sorry to repeat myself, but I thought this question might have gotten
missed at the bottom of my other one.]
One of my facts' properties, attributes, is a Map of Map of String.
Unfortunately the second level of keys is sparse. If the attribute I want is
present,
Fact(attributes.KeyOne.KeyTwo == 42)
looks and works great. If KeyTwo is absent, however, I get
org.drools.RuntimeDroolsException: Exception executing predicate
attributes.KeyOne.KeyTwo == 42 [...] Caused by: [Error: unable to resolve
method: java.util.HashMap.KeyTwo() [arglength=0]] [Near : {... Unknown }]
The best syntax I've found which is null-safe is
Fact(attributes.KeyOne[KeyTwo] == 42)
which works but hurts the eyes somewhat. I'm not clear whether MVEL-style
null-safe traversal should work here; my experiments suggest it does not.
Any suggestions?
Thanks,
--
| Dave Schweisguth http://schweisguth.org/~dave/ |
| Home: dave at schweisguth.orgWork: http://www.nileguide.com/ |
| For compliance with the NJ Right to Know Act: Contents partially unknown |
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] [DUG] ORF 2009 Keynote Speaker Announcement
[With Permission, of course]Greetings:This will be our penultimate email about October Rules Fest 2009 - but, even though it follows closely on the heels of the previous email, it's necessary. And it's a goodie. OurKeynote Speakerfor ORF 2009 isTom Cooper, co-author of "Rule-Based Programming in OPS5" by Tom Cooper and Nancy Wogrin. (Thanks to Luke Voss and Andrew Waterman for making a last-minute agenda shuffle possible.) The book is long since out-of-print but is still available in slightly used condition by many of Amazon's associated book resellers. (I saw only four "used but in good condition" copies at Amazon itself.) When Dr. Forgy and I were working on our first project together back in 1998, I asked him what would be the one book that a person might buy to get a good foundation on rulebased programming. This was it and I have used it many times in my classes that I teach on the subject. Side note: I also use Gary Riley's book - still in publication - to teach CLIPS (and Jess) and many others for reference; such as "Jess In Action" by Dr. Ernest Friedman-Hill or the Buchanan-Shortliffe magnum opus on the MYCIN project. You can see my comlete list athttp://www.kbsc.com/aibooks.htmlfor more of them. Even though some (most?) of the books are out-of-print none are really out-of-date.FULL-TIME STUDENTScan now register for ORF 2009 for only$150per personWITH a valid photo ID and a CURRENT student photo ID card.Last year we priced the whole thing at student rates and did not get a single student registeration from the USA. (We had one from the UK.) We have had several inquiries this year, some from as far away as California, and decided to put the student rate back online. Just click on the regular ORF registration link and it will give you the instructions for the special student registration process.We have two (yep, 2 of them)BOOT CAMPSthat are co-located with ORF in The Adolphus Hotel. There will be theJess Boot Camp(taught by Jason Morris) and theDrools Boot Camp(taught by Mark Proctor and Edson Tirelli). Even though both boot camps are headed by their individual instructors, we are posting the curriculum of both on-line with the ORF agenda. (Topics are subject to change.) Both camps have done a lot of work the past few days one defining what to expect from each of them. If you like, you really CAN attend just one of the boot camps (for a small fee to cover the cost of the meeting room and catered coffee) and not attend ORF - but why??? ORF attendees can attend either one of the boot camps free of charge.I will try and send another email before the 15th but in case that I don't, remember that thespecial $129 / night room rateforOctober Rules Fest 2009 attendeesat The Adolphus willEXPIREon the 16th !!So I urge that if you have not already registered for ORF as well as reserved a room at The Adolphus, please do so this week if possible.BTW, thanks to ALL of you who have already signed up and/or have registered at The Adolphus. The rooms are filling up. Boot Camps are filling up. And, thankfully, October Rules Fest is filling up with some great folks looking for answers to some really perplexing problems. So, if you have NOT registered, do so now. If you know of some students who want to attend, put them in touch with Chelanie who can get them registered. If all you want is one of the two greatest boot camps in the world, you can sign up just for that. But you need to sign up now!!SDGJames OwenFounder October Rules FestSenior Consultant / Architect KBSChttp://www.kbsc.comhttp://www.OctoberRulesFest.orgTwitter: OctRulesFestBlogs:http://JavaRules.blogspot.com[Rulebased Systems Blog]http://ORF2009.blogspot.com[October Rules Fest Blog]http://exscg.blogspot.com/[Expert Systems Consulting Group Blog]"If I have seen a little further it is by standing on the shoulders of giants."Sir Isaac Newton in a letter to Robert Hooke, 5 Feb 1676Come to October Rules Fest and stand on the shoulders of the Giants of the industry; if only for a week.___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
