[rules-users] JBoss Drools 4.0 Released
JBoss Drools 4.0 has just been released :) We are really proud of what we have done here. We believe that we now have the best and most powerful declarative rule language, bar none; commercial or open source. The Rule Flow is excellent and I really enjoyed updating the Conway's Game of Life to Rule Flow; sub Rule Flows and milestone support will be coming in a point release soon. The BRMS has long been requested and we put a lot of effort into the ajax based design. The Eclipse improvements for the debug points and guided editor should help reduce learning curves, opening us to new audiences. Of course performance is now much better, especially for complex rules and the new Sequential Mode should be very popular with decision services. Boss Drools 4.0 can be summarised as: * More expressiveness. * More powerful declarative keywords. * Hibernate ready, with 'from' keyword for evaluating external data. * Pluggable dialects, with new MVEL dialect. * New Rule Flow and Eclipse modeller. * Better Performance. * IDE Improvements. * Enterprise Ready with Web 2.0 Business Rules Management Studio. Resources: * Presentation from Skills Matter http://wiki.jboss.org/wiki/attach?page=JBossRules%2FSkillsMatter20070711.pdf * What's new in JBoss Rules 4.0 http://wiki.jboss.org/wiki/attach?page=JBossRules%2Fwhats_new_in_jbossrules_4.0.pdf Enjoy :) The Drools Team Mark Proctor, Michael Neale, Edson Tirelli, Kris Verlaenen, Fernando Meyer http://blog.athico.com Here is a more detailed enhancements list: Language Expressiveness Enhancements * New Conditional Elements: from(hibernate ready), collect, accumulate and forall * New Field Constraint operators: not matches, not contains, in, not in, memberOf, not memberOf * New Implicit Self Reference field: this * Full support to Conditional Elements nesting, for First Order Logic completeness. * Support to multi-restrictions and constraint connectives and || * Parser improvements to remove previous language limitations, like character escaping and keyword conflicts * Support to pluggable dialects and built-in support to Java and MVEL * Complete rewrite of DSL engine, allowing for full l10n * Fact attributes auto-vivification for return value restrictions and inline-eval constraints * Support to nested accessors, property navigation and simplified collection, arrays and maps syntax * Improved support to XML rules * Experimental Clips parser support Core Engine Enhancements * Native support to primitive types, avoiding constant autoboxing * Transparent optional Shadow Facts * Rete Network performance improvements for complex rules * Rule-Flow * Stateful and Stateless working memories (rule engine sessions) * Support for Asynchronous Working Memory actions * Rules Engine Agent for hot deployment and BRMS integration * Pluggeable dialects and and full support to MVEL scripting language * Dynamic salience for rules conflict resolution * Parameterized Queries * halt command * Sequential execution mode, faster performance and uses less memory * Pluggable global variable resolver IDE Enhancements * Support for rule break-points on debugging * WYSIWYG support to rule-flows * New guided editor for rules authoring * Upgrade to support all new engine features Business Rules Management System - BRMS * User friendly web interface with nice WEB 2.0 ajax features (GWT) * Package configuration * Rule Authoring easy to edit rules both with guided editor ( drop-down menus ) and text editor * Package compilation and deployment * Easy deployment with Rule Agent * Easy to organize with categories and search assets * Versioning enabled, you can easily replace yours assets with previously saved * JCR compliant rule assets repository Miscellaneous Enhancements * Slimmed down dependencies and smaller memory footprint ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Re: Load working memory with old/existsing facts
tom at bergstein-soraic.de writes: I've a use case that is similar to the TroubleTicketExample that is part of the drools examples. In this examples new tickets are inserted via workingMemory.assertObject (ticket). However, tickets are usually managed and stored in a ticketing system (Remedy, Peregrine, etc). When I stop the drools engine, I assume that the state of the working memory is lost. When I start the engine again, I'd like to load the working memory with the tickets that are stored in the ticketing system, but I don't want to fire all rules, since I'd to avoid that rules are executed again (e.g., rule Escalate - send a e-mail), which have been already executed before the drools engine has been stopped. Existing tickets in the ticketing system are important facts for the rules! and therefore the need to be loaded into the morking memory. Is there a way to build up the working memory with initial facts? Can I persist the state of the working memory and load it later again? Many thanks in advance, Tom Hey my two bits, Assuming I dont know much about StatefulSessions holding objects I wanted to check with you, is this safe? I'm not sure over a period of time if your objects would be released with a StatefulSession/WorkingMemory, would recommend you 'soak test' (test over a period of time with consistent load) But here is the possibility: Well the interface WorkinfgMemory -- extends -- Eventmanager which extends Serializable. You could try serializing the object, or query your WorkingMemory for its state and save it to a database. Am assuming you are using StatefulSession so you will have access to WorkingMemory. Conceptually I just think its worng to use a Rule Engine to persist state over a such a long period of time. Any expert opinion? regards, Arjun ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Re: Load working memory with old/existsing facts
Technically it is possible and supported to serialize working memories. Although, we did faced problems with large serializations due to a known recursion issue in JDK. There is a JIRA for that, but I don't have the link right now. Now, if you want to reassert objects without firing rules, maybe what you can do is call WorkingMemory.clearAgenda() after reasserting the objects. Not sure if that will give you the results you expect. []s Edson 2007/7/25, Arjun Dhar [EMAIL PROTECTED]: tom at bergstein-soraic.de writes: I've a use case that is similar to the TroubleTicketExample that is part of the drools examples. In this examples new tickets are inserted via workingMemory.assertObject (ticket). However, tickets are usually managed and stored in a ticketing system (Remedy, Peregrine, etc). When I stop the drools engine, I assume that the state of the working memory is lost. When I start the engine again, I'd like to load the working memory with the tickets that are stored in the ticketing system, but I don't want to fire all rules, since I'd to avoid that rules are executed again (e.g., rule Escalate - send a e-mail), which have been already executed before the drools engine has been stopped. Existing tickets in the ticketing system are important facts for the rules! and therefore the need to be loaded into the morking memory. Is there a way to build up the working memory with initial facts? Can I persist the state of the working memory and load it later again? Many thanks in advance, Tom Hey my two bits, Assuming I dont know much about StatefulSessions holding objects I wanted to check with you, is this safe? I'm not sure over a period of time if your objects would be released with a StatefulSession/WorkingMemory, would recommend you 'soak test' (test over a period of time with consistent load) But here is the possibility: Well the interface WorkinfgMemory -- extends -- Eventmanager which extends Serializable. You could try serializing the object, or query your WorkingMemory for its state and save it to a database. Am assuming you are using StatefulSession so you will have access to WorkingMemory. Conceptually I just think its worng to use a Rule Engine to persist state over a such a long period of time. Any expert opinion? regards, Arjun ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli Software Engineer - JBoss Rules Core Developer Office: +55 11 3529-6000 Mobile: +55 11 9287-5646 JBoss, a division of 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] How to write constraint about a Map inside a Map?
What error are you getting?
I just tested this in MVELSH and it works:
mvel$ map[outerKey][innerKey]
OUT: innerValue
[]s
Edson
2007/7/24, Felipe Piccolini [EMAIL PROTECTED]:
Suppouse I have a Map attribute and one of the values is another Map...how
can I check a member of the inner Map?
class MyFact{
Map map;
public MyFact(){
this.map = new HashMap();
}
setter and getter...
}
-- test --
MyFact myFact = new MyFact();
Map innerMap = new HashMap();
innerMap.put(innerKey, new String(InnerValue));
Map map = new HashMap();
map.put(mapKey, innerMap);
myFact.setMap(map);
set the RuleBase and insert myFact as a fact for the WorkingMemory...
---
Now... how should I write the rule to check the innerKey ??
rule test InnerMap
when
$mf: MyFact( map['mapKey']['innerKey'] == InnerValue ) //
doesnt work...
$mf: MyFact( map['mapKey'].this['innerKey'] == InnerValue )
// doesnt work...
$mf: MyFact( map['mapKey'].['innerKey'] == InnerValue ) // doesnt
work...
$mf: MyFact( $innerMap: map['mapKey'], $innerMap['innerKey'] ==
InnerValue ) // doesnt work...
$mf: MyFact( $innerMap: map['mapKey'] - ($innerMap['innerKey']
== InnerValue )) // doesnt work...
Thanks.
*Felipe
Piccolini M.*
[EMAIL PROTECTED]
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Re: [rules-users] Problem with function
Isn't the problem that the function parameter (loanAmount) doesn't
have a type? Or am I missing something?
Dean.
On 7/25/07, Edson Tirelli [EMAIL PROTECTED] wrote:
Natraj,
Can you try it with the 4.0GA release please? We fixed a couple issues
related to functions for the final release.
[]s
Edson
2007/7/24, Natraj Gudla [EMAIL PROTECTED]:
With 4.0.0 i am getting the run time exception on functions. what could be
the problem
Exception
java.lang.NullPointerException
at
org.drools.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:127)
at
org.drools.rule.builder.dialect.java.JavaFunctionBuilder.build(JavaFunctionBuilder.java:72)
at
org.drools.rule.builder.dialect.java.JavaDialect.addFunction
(JavaDialect.java:434)
at
org.drools.compiler.PackageBuilder.addFunction(PackageBuilder.java:350
)
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:259)
at org.drools.compiler.PackageBuilder.addPackageFromDrl
(PackageBuilder.java:147)
at
com.drools.sample.ParseDRL.readRuleFromDrl(ParseDRL.java:86
)
at com.drools.sample.ParseDRL.main(ParseDRL.java:25)
Exception in thread main
My Function:
function double getROI(loanAmount){
double roI=0.0;
if( loanAmount = 499000 )
roI = 18;
else if( loanAmount = 999000 )
roI = 17;
else if( loanAmount = 199 )
roI = 14.5 ;
else if( loanAmount = 399 )
roI = 12;
else if( loanAmount = 749 )
roI = 11.5 ;
else if( loanAmount 749 )
roI = 9.99 ;
return roI;
}
Thanks
Natraj Gudla
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Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
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[rules-users] or split
Hi, When I set the split type to OR I have this exception : Exception in thread AWT-EventQueue-0 java.lang.ClassCastException: org.drools.common.RuleFlowGroupNode cannot be cast to org.drools.spi.Activation What it could be -- View this message in context: http://www.nabble.com/or-split-tf4142836.html#a11784787 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] How to write constraint about a Map inside a Map?
Edson,
Im so sorry, stupid me I dont know what happened but this
doesnt worked yesterday...
dont remember the error, but now is working... must be murphy and his
dominating laws :)
Thanks for reply :)
Confirm: $mf: MyFact( map['mapKey']['innerKey'] == InnerValue ) //
DOes work !! :)
On 25-07-2007, at 8:53, Edson Tirelli wrote:
What error are you getting?
I just tested this in MVELSH and it works:
mvel$ map[outerKey][innerKey]
OUT: innerValue
[]s
Edson
2007/7/24, Felipe Piccolini [EMAIL PROTECTED]:
Suppouse I have a Map attribute and one of the values is another
Map...how can I check a member of the inner Map?
class MyFact{
Map map;
public MyFact(){
this.map = new HashMap();
}
setter and getter...
}
-- test --
MyFact myFact = new MyFact();
Map innerMap = new HashMap();
innerMap.put(innerKey, new String(InnerValue));
Map map = new HashMap();
map.put(mapKey, innerMap);
myFact.setMap(map);
set the RuleBase and insert myFact as a fact for the
WorkingMemory...
---
Now... how should I write the rule to check the innerKey ??
rule test InnerMap
when
$mf: MyFact( map['mapKey']['innerKey'] ==
InnerValue ) // doesnt work...
$mf: MyFact( map['mapKey'].this['innerKey'] ==
InnerValue ) // doesnt work...
$mf: MyFact( map['mapKey'].['innerKey'] == InnerValue ) //
doesnt work...
$mf: MyFact( $innerMap: map['mapKey'], $innerMap['innerKey'] ==
InnerValue ) // doesnt work...
$mf: MyFact( $innerMap: map['mapKey'] - ($innerMap
['innerKey'] == InnerValue )) // doesnt work...
Thanks.
Felipe Piccolini M.
[EMAIL PROTECTED]
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Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
JBoss, a division of Red Hat @ www.jboss.com
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[EMAIL PROTECTED]
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Re: [rules-users] JBoss Drools 4.0 Released
Congratz to all the team!!! Amazing work, really fast and hard work done in last months :) On 25-07-2007, at 5:04, Mark Proctor wrote: JBoss Drools 4.0 has just been released :) We are really proud of what we have done here. We believe that we now have the best and most powerful declarative rule language, bar none; commercial or open source. The Rule Flow is excellent and I really enjoyed updating the Conway's Game of Life to Rule Flow; sub Rule Flows and milestone support will be coming in a point release soon. The BRMS has long been requested and we put a lot of effort into the ajax based design. The Eclipse improvements for the debug points and guided editor should help reduce learning curves, opening us to new audiences. Of course performance is now much better, especially for complex rules and the new Sequential Mode should be very popular with decision services. Boss Drools 4.0 can be summarised as: * More expressiveness. * More powerful declarative keywords. * Hibernate ready, with 'from' keyword for evaluating external data. * Pluggable dialects, with new MVEL dialect. * New Rule Flow and Eclipse modeller. * Better Performance. * IDE Improvements. * Enterprise Ready with Web 2.0 Business Rules Management Studio. Resources: * Presentation from Skills Matter http://wiki.jboss.org/wiki/attach? page=JBossRules%2FSkillsMatter20070711.pdf * What's new in JBoss Rules 4.0 http://wiki.jboss.org/wiki/attach? page=JBossRules%2Fwhats_new_in_jbossrules_4.0.pdf Enjoy :) The Drools Team Mark Proctor, Michael Neale, Edson Tirelli, Kris Verlaenen, Fernando Meyer http://blog.athico.com Here is a more detailed enhancements list: Language Expressiveness Enhancements * New Conditional Elements: from(hibernate ready), collect, accumulate and forall * New Field Constraint operators: not matches, not contains, in, not in, memberOf, not memberOf * New Implicit Self Reference field: this * Full support to Conditional Elements nesting, for First Order Logic completeness. * Support to multi-restrictions and constraint connectives and || * Parser improvements to remove previous language limitations, like character escaping and keyword conflicts * Support to pluggable dialects and built-in support to Java and MVEL * Complete rewrite of DSL engine, allowing for full l10n * Fact attributes auto-vivification for return value restrictions and inline-eval constraints * Support to nested accessors, property navigation and simplified collection, arrays and maps syntax * Improved support to XML rules * Experimental Clips parser support Core Engine Enhancements * Native support to primitive types, avoiding constant autoboxing * Transparent optional Shadow Facts * Rete Network performance improvements for complex rules * Rule-Flow * Stateful and Stateless working memories (rule engine sessions) * Support for Asynchronous Working Memory actions * Rules Engine Agent for hot deployment and BRMS integration * Pluggeable dialects and and full support to MVEL scripting language * Dynamic salience for rules conflict resolution * Parameterized Queries * halt command * Sequential execution mode, faster performance and uses less memory * Pluggable global variable resolver IDE Enhancements * Support for rule break-points on debugging * WYSIWYG support to rule-flows * New guided editor for rules authoring * Upgrade to support all new engine features Business Rules Management System - BRMS * User friendly web interface with nice WEB 2.0 ajax features (GWT) * Package configuration * Rule Authoring easy to edit rules both with guided editor ( drop- down menus ) and text editor * Package compilation and deployment * Easy deployment with Rule Agent * Easy to organize with categories and search assets * Versioning enabled, you can easily replace yours assets with previously saved * JCR compliant rule assets repository Miscellaneous Enhancements * Slimmed down dependencies and smaller memory footprint ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Felipe Piccolini M. [EMAIL PROTECTED] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] [URGENT] Update in BRMS 1.0 released with drools 4.0.0
Fernando you writing spanish? On 7/25/07, Fernando Meyer [EMAIL PROTECTED] wrote: Hi peeps, For those who downloaded BRMS 1.0 from 4.0.0 (just released), you will need to download the BRMS archive again due a missing step during the yesterdays release process. We are really sorry about that. just follow to downloads page http://labs.jboss.com/drools/downloads Regards Fernando Meyer http://fmeyer.org [EMAIL PROTECTED] PGP: 0xD804DDFB ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - Eduardo Ibarra Flores Analista Programador de Sistemas mailto:[EMAIL PROTECTED] -- ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools Job Board
Want to recruite a Drools developer? Then please use our Job Board, which is linked into our blog: http://jobs.athico.com/ Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] [URGENT] Update in BRMS 1.0 released with drools 4.0.0
It's a Harry Enfield thing: http://www.youtube.com/watch?v=yICyNLWAmvk http://www.youtube.com/watch?v=0mYssEXILjc http://en.wikipedia.org/wiki/Harry_Enfield http://www.everything2.com/index.pl?node_id=642064 Zidboy wrote: Fernando you writing spanish? On 7/25/07, *Fernando Meyer* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Hi peeps, For those who downloaded BRMS 1.0 from 4.0.0 (just released), you will need to download the BRMS archive again due a missing step during the yesterdays release process. We are really sorry about that. just follow to downloads page http://labs.jboss.com/drools/downloads Regards Fernando Meyer http://fmeyer.org http://fmeyer.org/ [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] PGP: 0xD804DDFB ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users https://lists.jboss.org/mailman/listinfo/rules-users -- - Eduardo Ibarra Flores Analista Programador de Sistemas mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] -- ___ 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
[rules-users] [URGENT] Update in BRMS 1.0 released with drools 4.0.0
Hi peeps, For those who downloaded BRMS 1.0 from 4.0.0 (just released), you will need to download the BRMS archive again due a missing step during the yesterdays release process. We are really sorry about that. just follow to downloads page http:// labs.jboss.com/drools/downloads Regards Fernando Meyer http://fmeyer.org [EMAIL PROTECTED] PGP: 0xD804DDFB ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] IDE update site and Drools 4.0.0 maven Repository
We have just updated maven repository and drools IDE update site to include drools 4.0.0 GA libraries. You can check both at the following addresses: http://repository.jboss.com/maven2/org/drools/ http://downloads.jboss.com/drools/updatesite/site.xml Last but not less important, remember that the new drools page at jboss.org is http://labs.jboss.com/drools/ as same as the new downloads page http://labs.jboss.com/drools/downloads Fernando Meyer - http://fmeyer.org Y! [EMAIL PROTECTED] Software Engineer - JBoss Rules Core Developer Office: +55 11 3124-6000 Mobile: +55 11 8524-1298 JBoss, a division of Red Hat @ www.jboss.com PGP: 0xAB29DA3A ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Problem with function
Hello Jones,
I am extremely sorry of not updating the users. After i posted the query, i
realised the problem infact was what you pointed. It was quite
silly.Itworks now.
Thanks a lot for your reply.
Thanks
Natraj Gudla.
On 7/25/07, Dean Jones [EMAIL PROTECTED] wrote:
Isn't the problem that the function parameter (loanAmount) doesn't
have a type? Or am I missing something?
Dean.
On 7/25/07, Edson Tirelli [EMAIL PROTECTED] wrote:
Natraj,
Can you try it with the 4.0GA release please? We fixed a couple
issues
related to functions for the final release.
[]s
Edson
2007/7/24, Natraj Gudla [EMAIL PROTECTED]:
With 4.0.0 i am getting the run time exception on functions. what
could be
the problem
Exception
java.lang.NullPointerException
at
org.drools.base.ClassTypeResolver.resolveType(ClassTypeResolver.java
:127)
at
org.drools.rule.builder.dialect.java.JavaFunctionBuilder.build(
JavaFunctionBuilder.java:72)
at
org.drools.rule.builder.dialect.java.JavaDialect.addFunction
(JavaDialect.java:434)
at
org.drools.compiler.PackageBuilder.addFunction(PackageBuilder.java:350
)
at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:259)
at org.drools.compiler.PackageBuilder.addPackageFromDrl
(PackageBuilder.java:147)
at
com.drools.sample.ParseDRL.readRuleFromDrl(ParseDRL.java:86
)
at com.drools.sample.ParseDRL.main(ParseDRL.java:25)
Exception in thread main
My Function:
function double getROI(loanAmount){
double roI=0.0;
if( loanAmount = 499000 )
roI = 18;
else if( loanAmount = 999000 )
roI = 17;
else if( loanAmount = 199 )
roI = 14.5 ;
else if( loanAmount = 399 )
roI = 12;
else if( loanAmount = 749 )
roI = 11.5 ;
else if( loanAmount 749 )
roI = 9.99 ;
return roI;
}
Thanks
Natraj Gudla
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Office: +55 11 3529-6000
Mobile: +55 11 9287-5646
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Re: [rules-users] Trouble with BRMS on newly released 4.0
Hi Rick Have you resolved all seam dependencies? you can access tomcat/ jbossws logs dir ( apache-tomcat/logs ), look for localhost $timestamp.log (where $timestamp is your latest run date) and search for something like this. Jul 25, 2007 3:50:53 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener java.lang.NoClassDefFoundError: javax/faces/context/FacesContext Fernando Meyer http://fmeyer.org [EMAIL PROTECTED] PGP: 0xD804DDFB On Jul 25, 2007, at 1:52 PM, Wagner Rick - rwagne wrote: Hi all, Thanks for all the hard work going into 4.0. Could you please help me diagnose a problem I’m having with the BRMS? I’ve installed it on Tomcat 6 and JBossWS1.0.1, but under both when I try to access localhost/drools-jbrms I get only a banner header and a new URL: http://localhost:8080/drools-jbrms/org.drools.brms.JBRMS/JBRMS.html The log shows nothing out of the ordinary… Thanks, Rick ** * The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank You. ** ** ___ 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
[rules-users] contains...
Folks, I am using MR3, have a situation when Parent has multiple Children, and there is a rule that needs to be fired when parent has a child with certain attribute (active == true) Will need to do something like that : rule when $p : Parent( active == false, children contains Child() [ active == true ] ) then ... register error: inactive parent cannot have active child. end Please advice on correct syntaxes how to do that. Also please keep in mind, I don't want to insert children in facts memory. Thanks, -Sergey ** ** LEGAL DISCLAIMER ** ** This E-mail message and any attachments may contain legally privileged, confidential or proprietary information. If you are not the intended recipient(s), or the employee or agent responsible for delivery of this message to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this E-mail message is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete this E-mail message from your computer.___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Re: JBoss Drools 4.0 Released
thanks, The wiki is open to all and an easy way to put up info. Mark Arjun Dhar wrote: CONGRATULATIONS :o) And BIG Thanks guys! Brilliant Job. Hope we can contribute better to your release. If nothing else atelast the documentation. Actually, have discovered a lot of things and notes and am wondering how to share it back. Example, writing multi table decision tables, rule sequencing without using Agenda Groups in Decision Tables etc. How can we contribute back, is this the best place to post? Not sayin its all quality, but you filter it out ;o) congrats again, Arjun ___ 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] JBoss Drools 4.0 Released
Hopefully tomorrow. Mark Eric Miles wrote: Mark, Any idea when 4.0GA will be up on the jboss maven repo? Thanks! Eric On Wed, 2007-07-25 at 10:04 +0100, Mark Proctor wrote: JBoss Drools 4.0 has just been released :) We are really proud of what we have done here. We believe that we now have the best and most powerful declarative rule language, bar none; commercial or open source. The Rule Flow is excellent and I really enjoyed updating the Conway's Game of Life to Rule Flow; sub Rule Flows and milestone support will be coming in a point release soon. The BRMS has long been requested and we put a lot of effort into the ajax based design. The Eclipse improvements for the debug points and guided editor should help reduce learning curves, opening us to new audiences. Of course performance is now much better, especially for complex rules and the new Sequential Mode should be very popular with decision services. Boss Drools 4.0 can be summarised as: * More expressiveness. * More powerful declarative keywords. * Hibernate ready, with 'from' keyword for evaluating external data. * Pluggable dialects, with new MVEL dialect. * New Rule Flow and Eclipse modeller. * Better Performance. * IDE Improvements. * Enterprise Ready with Web 2.0 Business Rules Management Studio. Resources: * Presentation from Skills Matter http://wiki.jboss.org/wiki/attach?page=JBossRules%2FSkillsMatter20070711.pdf * What's new in JBoss Rules 4.0 http://wiki.jboss.org/wiki/attach?page=JBossRules%2Fwhats_new_in_jbossrules_4.0.pdf Enjoy :) The Drools Team Mark Proctor, Michael Neale, Edson Tirelli, Kris Verlaenen, Fernando Meyer http://blog.athico.com Here is a more detailed enhancements list: Language Expressiveness Enhancements * New Conditional Elements: from(hibernate ready), collect, accumulate and forall * New Field Constraint operators: not matches, not contains, in, not in, memberOf, not memberOf * New Implicit Self Reference field: this * Full support to Conditional Elements nesting, for First Order Logic completeness. * Support to multi-restrictions and constraint connectives and || * Parser improvements to remove previous language limitations, like character escaping and keyword conflicts * Support to pluggable dialects and built-in support to Java and MVEL * Complete rewrite of DSL engine, allowing for full l10n * Fact attributes auto-vivification for return value restrictions and inline-eval constraints * Support to nested accessors, property navigation and simplified collection, arrays and maps syntax * Improved support to XML rules * Experimental Clips parser support Core Engine Enhancements * Native support to primitive types, avoiding constant autoboxing * Transparent optional Shadow Facts * Rete Network performance improvements for complex rules * Rule-Flow * Stateful and Stateless working memories (rule engine sessions) * Support for Asynchronous Working Memory actions * Rules Engine Agent for hot deployment and BRMS integration * Pluggeable dialects and and full support to MVEL scripting language * Dynamic salience for rules conflict resolution * Parameterized Queries * halt command * Sequential execution mode, faster performance and uses less memory * Pluggable global variable resolver IDE Enhancements * Support for rule break-points on debugging * WYSIWYG support to rule-flows * New guided editor for rules authoring * Upgrade to support all new engine features Business Rules Management System - BRMS * User friendly web interface with nice WEB 2.0 ajax features (GWT) * Package configuration * Rule Authoring easy to edit rules both with guided editor ( drop-down menus ) and text editor * Package compilation and deployment * Easy deployment with Rule Agent * Easy to organize with categories and search assets * Versioning enabled, you can easily replace yours assets with previously saved * JCR compliant rule assets repository Miscellaneous Enhancements * Slimmed down dependencies and smaller memory footprint ___ rules-users mailing list rules-users@lists.jboss.org mailto: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 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
