Re: [rules-users] Doubt regardging Drools-RETE
On 11/11/2010 07:07, Harshit Bapna wrote: Yes Mark. It is definitely beneficial. I would really appreciate your answer on my questions. I have read a lot about RETE performance boost but struggling to find answer to my questions as my understanding on RETE is limited. 1. If there are not many common facts i.e all rules are operating on distinct facts / data. Does this mean the algorithm will not bring in much benefit ? 2. Also if the facts are same but the LHS of a rule is quite different from others then will RETE have its benefits. Much benefit compared to what? These are relative questions with nothing to relate them too. Will they have benefits related to the price of cheese on a sunday afternoon? So I'll just answer yes, with the caveat that it's certainly not pushing the limits of our Rete or taking advantage of some of the core optimisations; but that's the benefit as it's an algorithm that will grow with your needs. Mark I hope learned people on rete and drools can help me on this.. 2010/11/11 Mark Proctor mproc...@codehaus.org mailto:mproc...@codehaus.org On 11/11/2010 05:28, Harshit Bapna wrote: Hello everyone, 1. If there are not many common facts i.e all rules are operating on distinct facts / data. Does this mean the algorithm will not bring in much benefit ? 2. Also if the facts are same but the LHS of a rule is quite different from others then will RETE have its benefits. I have gone through the RETE algorithm documentation and RETE node diagram chart but still finding difficulty to understand it. Can somebody please provide a layman language link to understand RETE. I would forget about the algorithm and focus on the language. Does the declarative language allow you to solve your problem in a better way? Mark ___ 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 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
Re: [rules-users] Custom UI for Drools rules
On 08/11/2010 06:35, Balasenthil D wrote: Hi, Is it possible to create a custom UI to create/edit drools rules( instead of Drools Guvnor). Are there APIs that let you do it? For e.g., oracle provides a java API for create/edit rules. With this you can come up with your own UI, if you are not happy with jdeveloper. Is something similar possible with Drools too? Guvnor provides a webdav API, which it uses for team synchronisation with eclipse. You can probably use that in a custom UI environment. What UI are you looking to make, will it be useful to others and do you have plans to OSS it under ASL? Mark Thank you Bala CAUTION - Disclaimer * This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS End of Disclaimer INFOSYS*** ___ 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] Performance monitoring and hotspot detection in rules?
On 07/11/2010 21:59, H.C. wrote: Mark, Thanks for your reply. I figured 3 and 4 were currently possible but 1 and 2 puzzled me. it interates from root to tip repeatedly, so you can't easily determine how long it spends in each node Sorry, looks like my prior statement (#2) was misleading. Actually, I don't care so much about timing each condition of a rule but are looking to get the total time it takes to evaluate all conditions of a rule. This isn't possible as conditions are shared amoung rules and a rule's conditions are not tested all at the time time, but incrementally as knowledge is added that matches that rule. The best you can get is the time it takes to evaluate all conditions for all rules by testing the time it takes for an insert to do. I am not looking to break out statistics for each conditional statement of the rule. Would this be easier/possible to do or does it face the same issues? same issue. Thanks so much...was good talking to you guys at Rules Fest. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Performance monitoring and hotspot detection in rules?
On 05/11/2010 20:52, H.C. wrote: I am trying to implement a performance monitor to find the most problematic rules in order to optimize performance. The main performance metrics I want to gather are: 1. How any times a rule's conditions have been evaluated 2. How long each rule's condition evaluation took 1 and 2 are hard because it's not that straight forward, it's not a single block. And the tree traversal approach to our current Rete impl means it interates from root to tip repeatedly, so you can't easily determine how long it spends in each node, you could probably add a counter but this would be custom code. We ar working on an new algorithm that is single pass, more like a pipeline, which will make ti easier to get statistics and timings. 3. How many times a rule's then clause actually executed 4. How long execution of a rule's then clause took That you can do with the agenda listener. Also try looking at the audit log impl. Are there any existing or recommended approaches to do this? I have looked some at the AgendaEventListener methods but can't clearly map events to the above. Is there some other logging interface with more events? Thanks in advance. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Marshalling Error : JBRULES-2453
On 04/11/2010 08:36, Michael Anstis wrote: If it's impossible to debug *with* a test case imagine how difficult it must be without one! hehe, yes meant without :) Mark ;-) On 4 November 2010 04:49, Mark Proctor mproc...@codehaus.org mailto:mproc...@codehaus.org wrote: On 03/11/2010 15:01, drooRam wrote: bump you'll need to make a minimal self contained test that removes everything but what is necessary to show the problem, then attach it as a jira. The marshalling stuff is very cryptic and impossible to debug with a test case. Mark ___ 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
Re: [rules-users] Marshalling Error : JBRULES-2453
On 03/11/2010 15:01, drooRam wrote: bump you'll need to make a minimal self contained test that removes everything but what is necessary to show the problem, then attach it as a jira. The marshalling stuff is very cryptic and impossible to debug with a test case. Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Starting resource change scanner and notifier in drools-server.
It won't detect changes on the classpath. Needs to be file or http. Mark On 03/11/2010 21:49, Jason Davidson wrote: Hello, Any tips on this? I'm seeing this same behavior using Drools 5.1.1: Spring Beans: !-- Drools : -- drools:resource-change-scannerid=scannerinterval=10/ drools:kbaseid=ruleKBase /drools:kbase drools:kagentid=kagent1kbase=ruleKBase drools:resources drools:resourcetype=CHANGE_SETsource=classpath:drools-changeset.xml/ /drools:resources /drools:kagent Changeset: change-setxmlns='http://drools.org/drools-5.0/change-set' xmlns:xs='http://www.w3.org/2001/XMLSchema-instance' xs:schemaLocation='http://drools.org/drools-5.0/change-set http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd' add resourcesource=http://10.1.109.54:8080/drools-5.1.1-guvnor/org.drools.guvnor.Guvnor/package/com.cjs.jworks.rules.cases/LATEST; type='PKG'basicAuthentication=enabledusername=adminpassword=admin/ /add /change-set At startup I see that the KnowledgeAgent registers a listener but never detects changes: [2010:11:307 15:11:506:info] ResourceChangeScanner reconfigured with interval=60 [2010:11:307 15:11:506:info] ResourceChangeScanner created with default interval=60 [2010:11:307 15:11:506:info] ResourceChangeScanner reconfigured with interval=10 [2010:11:307 15:11:528:info] ResourceChangeNotification created [2010:11:307 15:11:528:debug] ResourceChangeNotification monitor added monitor=org.drools.io.impl.resourcechangescanneri...@616181be [2010:11:307 15:11:529:debug] KnowledgeAgent building resource map [2010:11:307 15:11:529:info] KnowledegAgent has started listening for ChangeSet notifications [2010:11:307 15:11:529:info] KnowledgeAgent created, with configuration: monitorChangeSetEvents=true scanResources=true scanDirectories=true newInstance=true [2010:11:307 15:11:530:info] KnowledgeAgent applying ChangeSet [2010:11:307 15:11:531:debug] KnowledgeAgent processing sub ChangeSet=[ClassPathResource path='drools-changeset.xml'] [2010:11:307 15:11:919:debug] KnowledgeAgent notifier subscribing to resource=[UrlResource path='http://10.1.109.54:8080/drools-5.1.1-guvnor/org.drools.guvnor.Guvnor/package/com.cjs.jworks.rules.cases/LATEST'] [2010:11:307 15:11:920:debug] ResourceChangeNotification subscribing listener=org.drools.agent.impl.knowledgeagenti...@d2a7c1e to resource=[UrlResource path='http://10.1.109.54:8080/drools-5.1.1-guvnor/org.drools.guvnor.Guvnor/package/com.cjs.jworks.rules.cases/LATEST'] [2010:11:307 15:11:920:debug] ResourceChangeScanner subcribing notifier=org.drools.io.impl.resourcechangenotifieri...@603a9c52 to resource=[UrlResource path='http://10.1.109.54:8080/drools-5.1.1-guvnor/org.drools.guvnor.Guvnor/package/com.cjs.jworks.rules.cases/LATEST'] [2010:11:307 15:11:920:debug] KnowledgeAgent rebuilding KnowledgeBase using ChangeSet Thanks! Jason 2010/9/23 Clandes Tino clandestino_...@yahoo.co.uk mailto:clandestino_...@yahoo.co.uk Hi, I've also faced the same problem. Hope somebody could give a hint. thanks best, milan --- On *Mon, 20/9/10, Graham Thomson /gthom...@fizzback.com mailto:gthom...@fizzback.com/* wrote: From: Graham Thomson gthom...@fizzback.com mailto:gthom...@fizzback.com Subject: [rules-users] Starting resource change scanner and notifier in drools-server. To: rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org Date: Monday, 20 September, 2010, 15:24 Hi, I would like to ask for help with setting up drools-server with Guvnor. I am using version 5.1.1 of both. I am trying to set up an instance of drools-server in Tomcat that periodically loads new updates of packages published in Guvnor (both drools-server and Guvnor run in the same instance of Tomcat). My change set definition is as follows: ?xml version=1.0 encoding=UTF-8? change-set xmlns='http://drools.org/drools-5.0/change-set' http://drools.org/drools-5.0/change-set%27 xmlns:xs='http://www.w3.org/2001/XMLSchema-instance' http://www.w3.org/2001/XMLSchema-instance%27 xs:schemaLocation='http://drools.org/drools-5.0/change-set http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd' http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/main/resources/change-set-1.0.0.xsd%27 add resource source='http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/one of my packages/LATEST' type='PKG' basicAuthentication=enabled username=username password= / resource source=http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/another of my packages/LATEST type=PKG
Re: [rules-users] Integration of Drools with Hadoop
On 31/10/2010 05:35, Roger Smith wrote:
We are working on a project to integrate Drools with Apache Hadoop,
http://hadoop.apache.org/, and run into some road blocks. We would
very much appreciate any suggestions/help from this list.
We have an app where we call drools rule engine inside the reducer
task of a Hadoop map reduce job. It throws a NullPointerException when
we the rule package resource to the knowledge builder. The same code
works fine when run as part of a stand alone app.
Code:
private static MapString, StatefulKnowledgeSession sessions =
new HashMapString, StatefulKnowledgeSession();
private static final String RULE_PACK_DIR =
file:///home/roger/Projects/gridx/
file:///%5C%5Chome%5Cpranab%5CProjects%5Cgridx%5C;
private static final String RULE_PACK_EXT = .drl;
public int process(String rulePackage, String dateTime, String
type) throws TException {
int rate = 0;
StatefulKnowledgeSession session = sessions.get(rulePackage);
if (null == session){
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
String rulePackPath = RULE_PACK_DIR + rulePackage +
RULE_PACK_EXT;
kbuilder.add( ResourceFactory.newFileResource(rulePackPath
), ResourceType.DRL);
if ( kbuilder.hasErrors() ) {
System.err.println( kbuilder.getErrors().toString() );
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
session = kbase.newStatefulKnowledgeSession();
sessions.put(rulePackage, session);
}
ContractRule contractRule = new ContractRule();
contractRule.prepare(dateTime, type);;
FactHandle ruleHandle = session.insert(contractRule);
session.fireAllRules();
System.out.println( + contractRule);
rate = contractRule.getRate();
session.retract(ruleHandle);
return rate;
}
This line throws the exception:
kbuilder.add( ResourceFactory.newFileResource(rulePackPath ),
ResourceType.DRL);
ResourceFactory.newFileResource just creates a file object but cleaning
up the paths.
public FileSystemResource(File file) {
if ( file == null ) {
throw new IllegalArgumentException( File must not be null );
}
this.file = new File( StringUtils.cleanPath(file.getPath()) );
}
The code is borrowed from Spring and uses the sme cleanPath logic. Once
the file is created it just creates the stream as so:
public InputStream getInputStream() throws IOException {
this.lastRead = getLastModified();
return new FileInputStream(this.file);
}
So it's pretty basic, the stack trace with line numbers may help. But I
suspect you'll need to do a debug and step into the drools code at the
point where you get the nullpointer and see what's going on.
Mark
It works fine as a stand alone app, outside hadoop
Roger Smith
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[rules-users] build and branches
We now have quite a few people working on different things and the build is breaking a lot and those breaking it are just leaving it broken. If you are doing feature development, can you please work in a branch and commit regularly there. Then sync up with trunk prior to a merge and make sure you do a full build there before commiting the merge. If you are doing minor bug fixing then that is ok in trunk, but you MUST monitor the build closely and jump on it if it breaks. We are looking into moving to GIT to facilitate this type of development. Thanks Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Using Drools and Spring in an OSGi environment
On 20/10/2010 11:26, O.S. wrote: Has nobody tried to get Drools-Spring working with OSGi? Otherwise it would be enough for me if i could configure the Kbases, KSessions and so on with the Drools-Spring-Syntax (drools-spring-1.0.0.xsd). Is there something like a DroolsConfigurationHelper ? If you find things are missing, open a jira with the specific requests and hopefully add a patch for what you need too :) Mark O.S. wrote: Hello, I'm actually using Drools in an OSGi environment and everything looks fine so far. But now I want to configure the KnowledgeBases etc. via Spring-XML-Configuration, like it's shown in the 5.1.1 Integration Guidehttp://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-integration/html_single/index.html#d0e76. I have read the Test-caseshttp://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-container/drools-spring/src/test/java/org/drools/container/spring/SpringDroolsTest.javaand tried to copy them, but it didn't worked. I think it's because he couldn't find the necessary classes (because of OSGi Classloader-Strategy and so on). My question is now: Has someone already tried to use Drools including Spring in an OSGi environment? I don't know where to start because I'm new at Drools and have never worked with Spring. Kind regards, O.S. ___ 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] [rules-dev] Rules Fest October 2010 and BRF 2010
Just a reminder that I and others of the core team are on conference at the moment, so apologies for lack of responsiveness. Mark On 12/10/2010 01:08, Mark Proctor wrote: Rules Fest is in full swing, http://rulesfest.org/html/home.html. Great attendance with around 100 people and great food :) Myself, Edson and Davide are here. Davide did a great lunch time talk. Kris will be arriving on Wednesday to help with the BootCamp. It's been a lot of preparation last week and we'll be very busy this week and next, so apologies if our responses aren't timely on mailing lists and irc. ___ rules-dev mailing list rules-...@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Rules Fest October 2010
Rules Fest is in full swing, http://rulesfest.org/html/home.html. Great attendance with around 100 people and great food :) Myself, Edson and Davide are here. Davide did a great lunch time talk. Kris will be arriving on Wednesday to help with the BootCamp. It's been a lot of preparation last week and we'll be very busy this week and next, so apologies if our responses aren't timely on mailing lists and irc. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] University of Texas Austin
I'm looking for locations for the next USA based conference for febuary (end of febuary). http://blog.athico.com/2010/09/drools-boot-camps-2011-usa-and-emea.html I figured most people want somewhere warm and Austin is centrally located. I don't know about pricing but Austin University seems to have nice conference facilities: http://www.meetattexas.com/ If we do this around austin university it would be good if we could double up organisation with the local logic based programming groups, maybe a professor at Austin University wants to be actively involved? If anyone has any ideas, please let me know :) Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] 5.1.1 import com.sun.tools.xjc
On 30/09/2010 16:19, Barry Kaplan wrote: It seems that KnowledgeBuilderFactory in api now has a dependency on these sun packages. However the pom declares them as provided. This seems to imply that drools will only be run in some kind of app-server?? I had to manually add a bunch of dependencies just to get my drools app to compile. What is the rational behind this? I think the rational was more to make it easy to work with JAXB, in theory if you aren't using JAXB you shouldn't need the dependency. If that's not working, we might have to look into an alternative way to add in the abstraction. Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Chained Rules
On 06/05/2010 08:37, miguel machado wrote: there is the 'extends' feature.. i guess that's what you're looking for. rule xyz ... end rule abc extends xyz... ... end it's been recently talked about in this forum. _ miguel and rule flow. Mark On Tue, May 4, 2010 at 10:46 AM, djb dbrownel...@hotmail.com mailto:dbrownel...@hotmail.com wrote: Hi all, I know there are some basic ways to chain rules together, by setting flags in consequences that are checked in the conditions of other rules... but in a large system based on rule templates, where thousands of rules are generated, it is not feasible to chain rules in this manner, especially when they are chained in a somewhat arbitrary fashion (eg. True if Rule 130 AND Rule 200 AND Rule 480 fire) has anyone had this situation before? would I need to execute this as a post-processing step? or, is there any design pattern that will allow rules to be chained, preferably in a manageable way? regards, Daniel -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Chained-Rules-tp775491p775491.html Sent from the Drools - User mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- To understand what is recursion you must first understand recursion ___ 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] Challenge! Using javassist and drools presents an issue with drl
On 29/04/2010 09:38, Swindells, Thomas wrote: Isn't the simplest solution just to add the imports at the start of the imported drl file? That is the users don't need to worry about writing the imports but before you feed the files into your code simply prepends the required imports. You can do this easily in memory with something like the following: StringWriter drlContents = new StringWriter(); drlContents.write(import ...\n); FileInputStream stream = new FileInputStream(drlFile); InputStreamReader inR = new InputStreamReader(stream, UTF-8); IOUtils.copy(inR, drlContents); kbuilder.add(ResourceFactory.newReaderResource(new StringReader(drlContents.toString())), ResourceType.DRL); Make sure you generate the classes first and put them into a classloader. Then specify that ClassLoader as the root classload to the kbuilder and kbase configurations. Mark Thomas -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of Dave Cracauer Sent: 28 April 2010 19:35 To: Rules Users List; rules-users@lists.jboss.org Subject: Re: [rules-users] Challenge! Using javassist and drools presents an issue with drl It sounds like the stated goal is to make things easier for non-developers to write rules. What about a dsl? What about using a templating language? I have used velocity in the past for dynamically generating rules based on templates, and I think that there is built in support for templates using mvel. -Original Message- From: markricardmarkric...@gmail.com Sent: Apr 28, 2010 11:53 AM To: rules-users@lists.jboss.org Subject: Re: [rules-users] Challenge! Using javassist and drools presents an issue with drl Perhaps there is an easier way to ask this question Rather than having to do an 'import' of a class in a drl text file, is there a way in the Java code that constructs the KnowledgeBase to via java dynamically import any class file required by any drl file that is added? Instead of the drl having: import com.foo.Instance; rule Walgreens Test It just has: rule Walgreens Test And in the KnowledgeBuilder does something like this: KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.addImport(com.foo.Instance); ... -- View this message in context: http://drools-java-rules- engine.46999.n3.nabble.com/Challenge-Using-javassist-and-drools-presents-an- issue-with-drl-tp763086p763118.html 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 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. An NDS Group Limited company. www.nds.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] Is RETE algo optimizes the performance in a stateless session.
On 24/09/2010 16:18, Leonardo Gomes wrote: Have a look here: http://www.drdobbs.com/184405218 here: http://blog.athico.com/2007/07/sequential-rete.html and here: http://herzberg.ca.sandia.gov/guidelines.shtml The easy answer for your question is Yes ;-) It depends :) In general a stateless session is just a convenience api for stateful, it just wraps. So no performance gain at all. There is a sequential mode, but in all honest you won't get any measurable perf gain. So I wouldn't use sequential mode for performance, the only reason to use it is if you want your rules to execute sequentially. Mark Cheers, Leo. 2010/9/24 Harshit Bapna hrba...@gmail.com mailto:hrba...@gmail.com Hi All, In a scenario where lets say 10 rule are to be fired (in any order) in a stateless session than will I get the benefits of RETE algorithm (i.e increased performance). i.e Whether the engine will fire all the ten results in a parallel fashion or Whether the engine will file each rule one by one. How RETE algorithm will improve the performance of the engine for rules fired in stateless session ? ___ 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
Re: [rules-users] Ruleflow and events
On 22/09/2010 06:57, pieter wrote: I am using drools version 5.1.0.M1 5.1.1 is out now, please try that fitst. Thanks Pieter On Wed, 2010-09-22 at 07:38 +0200, pieter wrote: Hi, I have a foreach node with a composite node nested inside it. In the composite node I have an exception handler defined and a fault node. The exception handler calls context.getProcessEngine().signalEvent(MyFaultType, context.getVariable(MyFaultVariable)); However if the MyFaultType event node is nested in either the foreach or composite node then the process engine can not find it. It only finds it if the event node is outside both the foreach and composite node. Caused by: java.lang.IllegalArgumentException: Unknown node id: 57 at org.drools.workflow.core.impl.NodeContainerImpl.getNode(NodeContainerImpl.java:46) at org.drools.workflow.core.node.CompositeNode.getNode(CompositeNode.java:33) at org.drools.workflow.core.node.ForEachNode.internalGetNode(ForEachNode.java:102) at org.drools.workflow.instance.impl.NodeInstanceImpl.getNode(NodeInstanceImpl.java:91) at org.drools.workflow.instance.node.EventNodeInstance.getEventNode(EventNodeInstance.java:66) at org.drools.workflow.instance.node.EventNodeInstance.signalEvent(EventNodeInstance.java:36) at org.drools.workflow.instance.node.CompositeNodeInstance.signalEvent(CompositeNodeInstance.java:219) at org.drools.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:278) Is this expected behavior? I am trying to have the foreach loop continue after the fault is raised. Thanks Pieter ___ 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] DroolsjBPM Boot Camps 2011 USA and EMEA (Rules, Workflow, Event Processing and Ontologies)
We are looking into an end of February date to do the next week long Boot Camp, location to be decided - proposals for USA so far are Chicago, Austin and Miami. The EMEA one will be Berlin, probably overlapping with the 2011 JudCon. The last boot camp had a medical focus and was a huge success. We have more budget this year so hoping to build on that. We are thinking of doing a Monday optional 1 day pre-conference basics day, to avoid repeating the what is a process, what is a rule, what is an event type talks. This also means we don't bore returning people with repeated content and that everyone there has the basics. Then follow up with 2 days of applied industry talks split into vertical tracks. Because of the high level of interest and success last time, we will run a dedicated 2 day Medical/Healthcare track again. Whether we run dedicated or mixed tracks for other verticals depends on interest and people's willingness to present or organise and lead other verticals. I imagine initially we'd probably do mini tracks, say half a day per vertical. Some target verticals would be telecoms, commercial finance (trading), consumer finance (mortgage/insurance/loans), logistics. The 4^th day would then be an organised workshop day. We'll provide bootable USB keys for all in attendance, so that we have a quick start off (previously we wasted hours getting everyone up and running with virtual images). The workshops will allow people to go through the very basic examples or the more advanced examples and infrastructure set-up with us on hand. Those that have their own projects and just want to work on that with us on hand to offer help can do so too. The 5^th day will be more of an open floor. Some people will leave early, others will want to continue working through the basic examples and making sure they can configure and set everything up. Others will want dedicated discussion time to work on their own problems and ideas. In general it's the day where the developers will be on hand for what ever anyone wants -- you'll get out of it what you put in. If you would like to present or even run and organise a vertical let me know. In the past I've found for a vertical to work it needs a well connected industry person to chair it, so we definitely need community people to take up the mantle here. Talks can either be What we did with Drools and/or jBPM or This is an industry problem use case that could be solved with Drools and/or jBPM or just something that we think will be of interest to the audience. The range of technologies covers (but not limited too) rules (expert systems and other derivatives domains), workflow, event processing and ontologies. The event will again be free for attendance. We are thinking of opening it up for sponsorship to help towards food and drink. So if you are interested in talking, organising, sponsoring or just have some general input then let us know - we want to progress in moving these events to a more industry focus and not pure technology, for that to happen we need YOU the community. Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] SAML 2.0 support ?
On 22/09/2010 16:38, Lavabit wrote: Hi, le Mon, 20 Sep 2010 17:03:17 +0200 Lavabitlangou...@lavabit.com a écrit : I would like to know if any of you as ever succesfully tested JBoss against a certified SAML 2.0 Identity Provider ? My question seems to be a bad one as I have no answer :-). So I will try to reduce the query : Is anybody aware of any successful JBoss testing against a SAML 2.0 Identity Provider ? Thank you very much. I don't believe this is a question related to Drools, maybe try the JBoss security mailing list. Mark Pierre ___ 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] Drools Fusion High Availability
On 21/09/2010 13:02, Thomas Peuß wrote: Hello! We are thinking about using Drools Fusion 5.1 for Complex Event Processing. We have a prototype running that consumes events from a Tibco JMS server. Everything works as expected. My boss is now asking about HA features that are available. I have read the documentation and found nearly nothing about HA features. In the case of Fusion you have long running threads working on fireUntilHalt(). So when the node goes down you loose all the events that live in the ksession memory. What possibilities do you see to run Fusion in an HA environment? There are two bespoke solutions you can do. 1) Setup 2 or more engines and the JMS queues sends facts to both so that you have redundancy. 2) Keep all facts in a HA cloud, using something like infinispan, if the engine goes down restart it and reload the data. Mark Thanks for your ideas Thomas ___ 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] drools vs jbpm
On 21/09/2010 18:07, woods5242-photogra...@yahoo.com wrote: Hi, We need a rules engine for our project and I am trying to determine the main differences between Drools and JBPM. Can anyone on here provide a brief explanation maybe offering why one is better than the other, chances of them being merged or one being retired over the other? Are they competing projects? Drools Flow will be incorporated into jBPM5. The safest bet for now is to adopt Drools Flow, as the changes for adoptiong jBPM5 when we release it will be minimal. Mark thanks! ___ 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] drools vs jbpm
On 21/09/2010 19:44, Bernd Rücker wrote: Hey! If you asked for just a rule engine, this is nothing available in jBPM (which is a process engine). If you asked for processes and workflow then I have a follow up question for Mark: Is there already any timeline on jBPM 5? Sometime next year :) There should be minimal api changes from what we have now on drools flow, just a bit more separation and modularity on the backend code. Mark Cheers Bernd -Ursprüngliche Nachricht- Von: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] Im Auftrag von Mark Proctor Gesendet: Dienstag, 21. September 2010 19:52 An: rules-users@lists.jboss.org Betreff: Re: [rules-users] drools vs jbpm On 21/09/2010 18:07, woods5242-photogra...@yahoo.com wrote: Hi, We need a rules engine for our project and I am trying to determine the main differences between Drools and JBPM. Can anyone on here provide a brief explanation maybe offering why one is better than the other, chances of them being merged or one being retired over the other? Are they competing projects? Drools Flow will be incorporated into jBPM5. The safest bet for now is to adopt Drools Flow, as the changes for adoptiong jBPM5 when we release it will be minimal. Mark thanks! ___ 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 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] Schema Error with Drools spring xsd
We do not maintain publicly accessible schemas. So take the xsds from the jar and host them somewhere locally and make the schemaLocation referenec that. Mark On 20/09/2010 15:35, Evert Penninckx wrote: Hi I had a similar problem. Since the drools jars contain the xsd I tried referring to them with http://drools.org/schema/drools-spring-1.0.0.xsd;. Didn't work. Might be because spring.schemas in drools-container/drools-spring/src/main/resources/META-INF has not been updated. If I refer to drools-spring.xsd it's solved. -Evert beans xmlns=http://www.springframework.org/schema/beans; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xmlns:context=http://www.springframework.org/schema/context; xmlns:tx=http://www.springframework.org/schema/tx; xmlns:util=http://www.springframework.org/schema/util; xmlns:drools=http://drools.org/schema/drools-spring; xsi:schemaLocation= http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://drools.org/schema/drools-spring http://drools.org/schema/drools-spring.xsd; ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Fwd: Early bird registration ENDS TODAY: Rules Fest 2010
On 17/09/2010 19:07, Abdel Dridi wrote: Edson, Would you please clarify what kind of exercise you guys are planing to do for the Drools Bootcamp? which level of Drools knowledge is required to attend the bootcamp? Is it worth it for people who have been using Drools for some time now? The morning will be talks, for those that know Drools well, it will mostly be what they know. The afternoon will be an open workshop, this means people work through examples with us onhand to help. There are also more experience people there who are already working on their own projects and just want a bit of mentoring/advice/insite, and often bring their code along with them. Those people will probably just code away in the morning, with one eye on the talks if anything interests them they haven't seen before. The other type of person are those wanting to actually hack on Drools internals adding news features. You get the most out of the Day if you know what it is you specifically want and know how to ask it. What the day isn't is 8 hours of spoon fed step by step workshop tutorials that you would get on a training course. In the past we used virtual machine images on a USB stick, but setting that up always caused a lot of problems. So this year I think we are going to provide bootable usb sticks with Fedora and Drools ready to go, so people can work through examples and just hack code. Mark Thanks, Abde 2010/9/17 Edson Tirelli tire...@post.com mailto:tire...@post.com 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_associat...@mail.vresp.com mailto:rules_fest_associat...@mail.vresp.com Date: 2010/9/17 Subject: Early bird registration ENDS TODAY: Rules Fest 2010 To: tire...@post.com mailto:tire...@post.com International Rules Fest 2010 Conference Header.jpg *Studied, Defined, Explained, Illustrated*: Rules Decisioning Technologies Made Easy Register Now Before September 17 deadline! http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/934511bf7e *Conference fee*: *$399* *Early Bird Registration* *$349* *Register today and save $50!* *Conference package deal*: * 4 nights and 3 days at the historic Dolce Hayes Mansion Resort http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/01a454ee54 * A boot camp of choice * Continental breakfast and lunch each day * Discount off from the Rules Fest 2011 conference * *$999 ($225 savings)* *Bootcamps* Rules Fest 2010 offers a number of hands-on tutorial and coding sessions known as bootcamps. These events give all developers — from novice to advanced — a chance to learn new technologies and/or techniques while being coached by those who know them well. All bootcamps are a full day, and they run concurrently on Thursday, October 14th, the day after the main conference ends. More info on Bootcamps... http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/ba8eecf2ba Hi , Dozens of the world’s top thinkers, developers , architects, engineers and programmers from industry and academia will come together on October 11-14 to present a single-track of 17 hot topics reasoning, inferencing, artificial intelligence and pattern matching … at the heart of many solutions to modern, complex computing problems. The world's only technical conference devoted to the practical application of all rule-based and knowledge-based reasoning, inferencing, and decisioning technologies will feature 3 days of presentations. *Conference Agenda http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/6091ae8061* Topic categories include: * Reasoning /in Action/ * Reasoning Methodologis Best Practices * Reasoning and Management * Reasoning Trends Factoid: RulesFest 2010 speakers comprise 7 CEOs 6 Ph.D.s 4 CTOs 8 Senior Developers 1 Vice President View abstracts http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/23762bda94 *Click to register and save $50 http://cts.vresp.com/c/?VisionArtsCommunicat/b85f095f0f/4dadcb8b59/8f91725229* For info: www.rulesfest.org
Re: [rules-users] URGENT - using lock-on-active or not
please don't title your subjects with URGENT. i'm sure everyone's email here is urgent. See netiquette here: http://www.jboss.org/drools/lists.html Mark On 16/09/2010 08:55, Yaniv Itzhaki wrote: Hi All, I have an urgent problem which I hope someone can explain it to me and how it can be solved. I created 2 rules Update 1 and Update 2, basically the rules are the same, get all the CaseLog objects according to Category and Value and update the Case, which holds a list of CaseLogs, with a new object. Note that in the update method I am updating the working memory by retracting the old log and inserting the new one. Now for the problem: The problem is that on one hand, when I insert a new log line all rules without lock-on-active re-fire. On the other hand, rules with lock-on-active seem to disregard the addition of the new object and fire only on the lines that were present when their group was activated. Please see the rules below Thanks Yaniv * * *rule* Update 1 *salience* 4 *ruleflow-group* group1 *lock-on-active* *when* $case : Case() $myLog : CaseLog( myClass == Category, myValue == 1 ) *then* System.out.println(Logic: Update 1); $case.update($myLog,40.0,*null*); *end* *rule* Update 2 *salience* 0 *ruleflow-group* group1 *lock-on-active* *when* $case : Case() $myLog : CaseLog( myClass == Category, myValue == 1, $score : myScore ) *then* System.out.println(Logic: Update 2 + $score + 5.0); $case.update($myLog,$score + 5,*null*); *end* ___ 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] Drools flow and BPEL (Drools 5.1)
On 16/09/2010 03:29, tim wrote: Do you mean that there isn't embedded BPEL (i.e Apache ODE) in Drools 5.1？If that's true, I'll have to find other ways to support BPEL in our product. I find there is a guvnor-BPEL-editor component in Drools 5.1.1 source code. Are you planning to provide a BPEL editor in Guvnor? And in which release? We have no plans at the moment to embed BPEL into Drools. BPMN2 is far supperior to BPEL and that is were our focus is. Mark Thanks! ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools dependencies
On 15/09/2010 11:00, Evert Penninckx wrote: Hello I'm using ant to compile and deploy a project which uses drools. I ran in some jar dependency problems and have a hard time understanding which packages are required for what and which dependent libs are really needed. I read the README_DEPENDENCIES file, but it's rather outdated by now. Is it possible to update this file? The file is just a summary of what's defined in the maven pom.xml. Mark Tnx Evert ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools flow and BPEL (Drools 5.1)
On 15/09/2010 07:46, tim wrote: 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! Drools Flow core engine is generic, although we provide an out of the box BPMN2 solution, we do not provide any BPEL functionality. You could write a BPEL engine ontop of Drools Flow core engine, but we haven't done so or plan to do so. imho don't bother with BPEL and just adopt BPMN2. Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Verify if an objects attribute exists
Pattern( field != null, eval( someFunc( field ) ) )
Mark
On 14/09/2010 05:18, lnguyen wrote:
Sorry here is some additional details...I hope I'm not making this sound more
complicated than it really is but I am attempting to restrict access to view
an account based on the logged in user.
public class User
{
private Long id;
...
private UserProfile userProfile;
}
public class UserProfile
{
private Long id;
private User supervisor;
}
So I created a function called isUserMatching to determine if the
currentUser is looking at their own account or if their supervisor is
looking at an employees account:
function boolean isUserMatching(User user)
{
User currentUser = (User) Component.getInstance(currentUser);
User supervisor = (User) user.getUserProfile().getSupervisor();
boolean result = false;
if(currentUser == user)
{
System.out.println(## currentUser = user is
TRUE #);
result = true;
}
else if((supervisor != null)
(currentUser.getId().equals(supervisor.getId(
{
System.out.println(## currentUser = supervisor is
TRUE
#);
result = true;
}
else
{
System.out.println(## currentUser/supervisor !=
user is FALSE #);
}
return result;
}
This function works as desired but not all users have a supervisor. What I'd
like to know is how can I check if a supervisor is null so that I can
prevent passing null values into functions?
Doing this eval (isUserMatching($supervisor)) results in an runtime error
of course when there is no supervisor.
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Re: [rules-users] [rules-dev] Technical Rules
On 14/09/2010 21:17, Leonardo Gomes wrote:
The thing is that, afaik, the DrlParser in itself doesn't give you
something that you can use to generate the BRL XML, even for a
well-behaved DRL. You would have to do some sort of model-to-model
transformation that would have RuleModel as an outcome. With the
RuleModel at hand you can easily marshal it to BRL XML.
There are visitors for the RuleModel that generate BRL XML (quite
simple with XStream) and pure DRL, and when you want to compile a BRL
rule package today, it uses the DRL visitor to generate the DRL that
can be used to compile.
BRL XML: hasn't evolved lately mainly because Mark and the others are
waiting for RuleML to become the canonical XML representation. I think
that the BRL Schema misses a lot of things that you have today in a
DRL and that's why nobody wanted to make the effort to have a DRL -
BRL parser. This part risk to be completely rewritten the day they
decide to use RuleML.
Exactly, we don't want to mature and promote a proprietary XML and waste
the time and create the confusion from not following a standard.
I think people working on the guided editor are just doing hacks to limp
the current xml along for the purposes of the guided editor until we can
move to something more long term.
Mark
Having said that, I still thing that I might be wrong since I haven't
looked much at the 5.x code except for the parts that I already knew
from 4.0.7 :)
Cheers,
Leo.
On Tue, Sep 14, 2010 at 2:00 PM, Wolfgang Laun
wolfgang.l...@gmail.com mailto:wolfgang.l...@gmail.com wrote:
You are right, of course. The BRL editor has its own XML format.
I just wonder whether going through a DrlParser - DrlDumper cycle
might produce a sufficiently well-behaved DRL text that could be
easily enough transformed to the BRL XML. But nothing of this is
in the stable API, so it would be wobbly in more than one way.
-W
2010/9/14 Leonardo Gomes leonardo.f.go...@gmail.com
mailto:leonardo.f.go...@gmail.com
I might be wrong, but I think DRL - BRL is still not possible.
Just had a look at
org.drools.ide.common.server.util.BRDRLPersistence, and we
have the following:
public RuleModel unmarshal(String str) {
throw new UnsupportedOperationException(
Still not possible to convert pure DRL to
RuleModel);
}
Leo.
2010/9/14 Wolfgang Laun wolfgang.l...@gmail.com
mailto:wolfgang.l...@gmail.com
There is a short hint in the Expert Manual, subsection
4.11.3, where conversion between DRL and XML using classes
such as DrlParser and XmlDumper is discussed. A .brk is
just the native Drools XML format.
-W
On 14 September 2010 01:17, Leonardo Gomes
leonardo.f.go...@gmail.com
mailto:leonardo.f.go...@gmail.com wrote:
Hi Amisha,
You should use the user's list:
rules-users@lists.jboss.org
mailto:rules-users@lists.jboss.org for this sort of
question.
AFAIK, no you can't convert technical rules (manually
written drl) to business rules (.brl) generated with
the graphical editor using Guvnor.
Cheers,
Leo.
On Mon, Sep 13, 2010 at 10:42 PM, apatel
apa...@ondeckcapital.com
mailto:apa...@ondeckcapital.com wrote:
Hi,
Is it possible to port Technical Rules in Drools
to Business Rules? Is the
procedure posted somewhere?
Also is it possible to apply Drools Categories to
Technical Rules?
Thanks for your help,
Amisha
--
View this message in context:
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Sent from the Drools - Dev mailing list archive at
Nabble.com.
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Re: [rules-users] [rules-dev] Hold the Beans!
These seem like two good student projects, so I updated the wiki as it's that time of year when students are picking up projects: http://community.jboss.org/wiki/DroolsProjects Please feel free to correct if some stuff I say is a bit high level or needs more explanation. Mark On 11/09/2010 08:35, Mark Proctor wrote: The first aspect is to allow the type and the property accessors to be dynamically defined declare Element @type( nodeName ) @property( get( $1 ) ) end Where $1 is the interpolation point for the passed property name. That would then allow access to Dom Elements as though they were natural facts. Same can be done for Maps, or similar constructs declare Map @type( get( type ) //the type is a key in the Map @propert( get( $1 ) ) end declare MyFact @type( type ) //The type is field @property( getProperty( $1 ) ) // all properties are via this getter end If you look at the expiremental FactTemplates you can see the guts of how fields are accessed and figure out how to plumb this all up. Then there is the RHS, which is a big more difficult, if you want the properties supported as named fields, and not emulated getters. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] OWL (2 RL) reasoning support
On 11/09/2010 09:29, Semweb Developer wrote: Hi all, as far as I know, Drools does not support a built-in ruleset for reasoning on OWL (2 RL) in the form of triple-based rules. Is there any custom approach towards this field with a publicly available ruleset for Drools? Davide Sottara is working on OWL support via the Manchester Syntax - we don't feel exposing RDF tripples to end users is a good idea. But if the triples are pojos then you can reason over them on the LHS. Mark thanks. ___ 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] Virtual box dev environment
On 09/09/2010 16:34, Leonardo Gomes wrote: Hi Guys, I'm trying to setup a drools developer environment and currently facing some issues with missing dependencies. Is it still worth to install the virtual box described here: *http://blog.athico.com/2009/06/pre-installed-drools-development.html* and do a svn update, etc. Or is it completely outdated and will be harder do deal with than going through the regular setup? pretty outdates now :) If the svn update works let us know :) Mark Thanks, Leonardo. ___ 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] What's the use of the RemoveIdentitiesOption?
On 08/09/2010 10:04, Wolfgang Laun wrote: I do understand both ways of the AssertBehaviorOption, but what's the function of the RemoveIdentitiesOption? (This one's not in Drools Expert, and Javadoc doesn't explain.) It stops self joins, although I'm not a fan of it really and it's off by default. so: A() A() Internally is generated as: a: A() ( this != a ) Mark -W ___ 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] JMS Messenger
On 08/09/2010 12:21, Tina Vießmann wrote: I've looked at the Drools Expert User Guide for version 5.0. There it's chapter 3.3.8.5 In Drools 5.1 we recommend you use Camel, as that abstracts all messaging. Mark On 7 September 2010 01:14, Tina Vießmann tviessm...@stud.hs-bremen.de mailto:tviessm...@stud.hs-bremen.de wrote: Hi, I'm using JMS (especially Apache ActiveMQ) in my application. Right now, I'm manually establishing the JMS connection, extracting my Java objects from the JMS messages and inserting the objects into the knowledge base. It's simple without any hype. Until now, I've always missed the chapter about the JMS Messenger in the Expert User Guide somehow. Now I've read about it, I'm asking myself if it can be helpful to me. But based on the short description I can't make really head or tail of it. Where is it? I have Drools Expert User Guide for version 5.1.0, and not even JMS is in it. -W Could someone explain its functionality more detailed to me, please? Thank you for any help! :) Tina ___ 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 ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] JMS Messenger
On 08/09/2010 13:27, Tina Vießmann wrote: In this case I would like to ask a non-Drools-question to Camel-experienced developers: Would it be useful in case of a very simple using of JMS to switch from manual to Camel or does it bring to many overload? Is the recommendation written somewhere? I couldn't find anything on it. Maybe a sentence should state the recommendation considering the pipeline chapter in Drools Expert User Guide 5.0!? http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-integration/html_single/index.html Thanks :) CJ Am 08.09.2010 13:39, schrieb Mark Proctor: On 08/09/2010 12:21, Tina Vießmann wrote: I've looked at the Drools Expert User Guide for version 5.0. There it's chapter 3.3.8.5 In Drools 5.1 we recommend you use Camel, as that abstracts all messaging. Mark On 7 September 2010 01:14, Tina Vießmann tviessm...@stud.hs-bremen.de mailto:tviessm...@stud.hs-bremen.de wrote: Hi, I'm using JMS (especially Apache ActiveMQ) in my application. Right now, I'm manually establishing the JMS connection, extracting my Java objects from the JMS messages and inserting the objects into the knowledge base. It's simple without any hype. Until now, I've always missed the chapter about the JMS Messenger in the Expert User Guide somehow. Now I've read about it, I'm asking myself if it can be helpful to me. But based on the short description I can't make really head or tail of it. Where is it? I have Drools Expert User Guide for version 5.1.0, and not even JMS is in it. -W Could someone explain its functionality more detailed to me, please? Thank you for any help! :) Tina ___ 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 ___ 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools 5.1 Released
http://www.theserverside.com/news/thread.tss?thread_id=60824 Drools 5.1 http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-introduction/html_single/index.html#d0e47 has been released. The main focus for this release has been around improved consumerability for users with declarative services based on Spring, Camel and CXF integration as well as the BPMN2 implementation for Flow and an improved Rete algorithm for reduced memory consumption providing better scalability for large number of objects. You can get full release details here: Drools 5.1 New and Noteworthy http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-introduction/html_single/index.html#d0e47 Download http://www.jboss.org/drools/downloads.html Documentation http://jboss.org/drools/documentation.html Drools Blog http://blog.athico.com Oryx integration for web based BPMN2 Authoring http://blog.athico.com/2010/09/bpmn2-authoring-in-drools-guvnor.html Core JMX Monitoring Spring, Camel and CXF integration Knowledge Agent Incremental Change Set Support Expert Differential Update (reduced memory consumption for better scalability) Channels Live Querries Timers and Calendars Flow BPMN2 (Eclipse + Web authoring) Pluggable Variable Persistence Guvnor Discussions Inbox (to monitor changes) Bulk Importer Built in Selector Working Sets Fact Constraints Guided editor improvements Rule Templates Oryx integration for web based BPMN2 editing (more details here http://blog.athico.com/2010/09/bpmn2-authoring-in-drools-guvnor.html) Rules Fest http://rulesfest.org/html/home.html Don't forget about the San Jose Rules Fest Oct 2010 http://rulesfest.org/html/home.html. It's a 3 day event of talks followed by a one day Boot Camp with separate rooms for Jess, DroolsjBPM, Grind Works and Open Rules. You may attend the talks or the bootcamps or both. The Boot Camp will spend the morning introducing the 4 Drools technologies: Expert, Fusion, Flow and Guvnor and will additionally cover what's new in Drools 5.1. We will also discuss the plans for jBPM3, jBPM4 and Drools Flow. The afternoon will be an open floor where you can get time with us core developers for any questions, mentoring or assistance that you would like. Thanks Drools 5.1 wouldn't have been possible without the following people: Core: Mark Proctor Edson Tirelli Kris Verlaenen Toni Rikkola Geoffrey De Smet Jervis Liu Community: Antoine Toulm Wolfgang Laun Nicolas Héron Hadrian Zbarcea Tihomir Surdilovic Pablo Nussembaum Lucaz Amador Esteban Aliverti Diego López León Mauricio Salatino ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Shame on Progress and Savvion
We just made #4 on dzone, please keep the votes coming, let's see if we can make #1 http://www.dzone.com/links/progress_buy_a_bridge_in_brooklyn_savvion_brms_an.html http://www.dzone.com/links/progress_buy_a_bridge_in_brooklyn_savvion_brms_an.html Mark On 03/09/2010 01:47, Mark Proctor wrote: Progress has recently ripped off the Drools community and has offered nothing in return, not even a curtesy nod of accreditation for our hard work.. 30% of that 49mill USD would go a long way to helping us invest in our tooling which would benefit all of us :) and maybe the Drools team can have it's next team meeting in Hawaii and pay for all the community members to come too. Cocktails anyone? :) http://blog.athico.com/2010/09/progress-buy-bridge-in-brooklyn-savvion.html I'm just having a little bit of fun, at their expense, which is well deserved for such shockingly bad behaviour. So I would urge anyone else to join in and have some fun too :) Do your own blogs, polls etc to bring attention to this. http://blog.athico.com/2010/09/breaking-news-have-your-vote-on-what.html And please vote up at Digg and DZone to help raise awareness: http://www.dzone.com/links/progress_buy_a_bridge_in_brooklyn_savvion_brms_an.html http://www.dzone.com/links/progress_buy_a_bridge_in_brooklyn_savvion_brms_an.html http://digg.com/news/technology/drools_progress_buy_a_bridge_in_brooklyn_savvion_brms_and_make_del_boy_trotter_proud Being slightly less tongue in check, this is just the reality of open source, I've been doing this a long time now and I know you just have to live with it, take the lumps with the smooth - as long as you get more smooth than lumps, it's still worthwhile :) At it's best it brings people together who collaborate and help each other and enrich the open-source eco system. At it's worst you have organisations such as Progress executing on predatory amoral tactics. The debate on whether all corporations are ultimately operating on degrees of amorality is out of scope for today :) As each year goes buy you start to appreciate Red Hat more for the sterling work it does in open source. While it would be nice if Progress got involved and contributed to Drools, the reality is that this doesn't both me as much as you think it would. It hasn't lestened the Drools community and technology, we still go from strength to strength, and I've always been more concerned about what we are doing and achieving than what someone else may or may not be doing with regards to taking advantage of our work. Ultimately this is actually quite flattering and re-affirms the strength of our technology and the directions we are going. I'd rather have an organisation using Drools and moving it one step closing to being a defacto standard, than they partner with someone else or develop yet another rule engine splintering the market and confusing users. Drools Everywhere has alwas been my moto :) However that said, anyone who knows me, knows I have a mischievous sense of humour and if Progress and Savvion aren't even going to at the very least accredit us then they are fair game and surely myself and the Drools community deserve a little fun at their expense :) Mark - The Mischievous Lead ___ 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] what happened to . org.drools.util.ProviderLocator in drools 5.1.1??
On 03/09/2010 21:03, Jeff Parks wrote: Upgrading from 5.0 to 5.1.1, I can't seem to find this class anymore That's internal factory loading stuff, you probably shouldn't be using that anyway. In drools-api there is org.drools.util that has similar stuff. But all are for internal Drools stuff, so don't expect them to stay stable. Use the proper Drools knowledge apis for stabiity. Mark ___ 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] Question about BPMN2 and Drools
On 03/09/2010 22:48, Cristiano Gavião wrote: Hi, I'm investigating the new Oryx editor... I'm delighted with it. It's a such nice work :-) and I would like to know how will Drools to address BPMN2 diagrams with more than one pool/ swimlanes. Something like this: http://blog.bpmn.info/wp-content/uploads/2008/10/chor1.png, will be runnable by Drools flow and editable at eclipse editor? both are a work in progress, we'll keep improving them and adding more features. The more community members that get involved, the faster it'll happen :) Mark thanks cheers Cristiano ___ 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] Shame on Progress and Savvion
Progress has recently ripped off the Drools community and has offered nothing in return, not even a curtesy nod of accreditation for our hard work.. 30% of that 49mill USD would go a long way to helping us invest in our tooling which would benefit all of us :) and maybe the Drools team can have it's next team meeting in Hawaii and pay for all the community members to come too. Cocktails anyone? :) http://blog.athico.com/2010/09/progress-buy-bridge-in-brooklyn-savvion.html I'm just having a little bit of fun, at their expense, which is well deserved for such shockingly bad behaviour. So I would urge anyone else to join in and have some fun too :) Do your own blogs, polls etc to bring attention to this. http://blog.athico.com/2010/09/breaking-news-have-your-vote-on-what.html And please vote up at Digg and DZone to help raise awareness: http://www.dzone.com/links/progress_buy_a_bridge_in_brooklyn_savvion_brms_an.html http://www.dzone.com/links/progress_buy_a_bridge_in_brooklyn_savvion_brms_an.html http://digg.com/news/technology/drools_progress_buy_a_bridge_in_brooklyn_savvion_brms_and_make_del_boy_trotter_proud Being slightly less tongue in check, this is just the reality of open source, I've been doing this a long time now and I know you just have to live with it, take the lumps with the smooth - as long as you get more smooth than lumps, it's still worthwhile :) At it's best it brings people together who collaborate and help each other and enrich the open-source eco system. At it's worst you have organisations such as Progress executing on predatory amoral tactics. The debate on whether all corporations are ultimately operating on degrees of amorality is out of scope for today :) As each year goes buy you start to appreciate Red Hat more for the sterling work it does in open source. While it would be nice if Progress got involved and contributed to Drools, the reality is that this doesn't both me as much as you think it would. It hasn't lestened the Drools community and technology, we still go from strength to strength, and I've always been more concerned about what we are doing and achieving than what someone else may or may not be doing with regards to taking advantage of our work. Ultimately this is actually quite flattering and re-affirms the strength of our technology and the directions we are going. I'd rather have an organisation using Drools and moving it one step closing to being a defacto standard, than they partner with someone else or develop yet another rule engine splintering the market and confusing users. Drools Everywhere has alwas been my moto :) However that said, anyone who knows me, knows I have a mischievous sense of humour and if Progress and Savvion aren't even going to at the very least accredit us then they are fair game and surely myself and the Drools community deserve a little fun at their expense :) Mark - The Mischievous Lead ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] copyright violation issue on Drools
On 01/09/2010 02:27, 山本 裕介 wrote: Richard's answer was: - I am actually currently on PTO but will get back to you as soon as practicable when I return.(Aug 21) - We will not be removing those changes. Please do not continue asking about this matter.(Aug 31) Yusuke Yamamoto, A mailing list is not the right place to raise legal questions, there won't be many lawyers on here. I made my own opinion on how OSS licensing works very clear and the need for certainty. If you think I'm wrong then go through the Red Hat legal department and i'll obide by their decision. Whatever your dispute is with Red Hat, don't take it out by needlessly harrasing my community and throwing your toys out of the pram; it won't achieve anything other than to make yourself look like a very troubled individual. I've been as polite as I can, but you've harassed us on irc recently, despite me politely pleeding with you to leave and then decided to paste your own stupidity (irc log) into jira https://jira.jboss.org/o browse/JBRULES-2660. Now your pasting private conversations into public forums on a topic that no one on here cares about. If you think your grievances are real and not achieving satisfaction directly with the Red Hat legal department, then seek legal council and do it through the proper channels, otherwise STFU. My guess is you are hoping to achieve your spiteful aims by being a bully and publicly harassing Red Hat communities and trying to publicly embarass Red Hat, your former employer. Unfortunately, for you, the only thing you are achieving is leaving a trail of google search results for your future employers to find, that will be on the internet FOREVER. Do you want them to form their opinion of youself from this thread? So do yourself and your career a favour, take a holiday, go relax and put this behind you. Move forward with your life as you won't achieve anything positive going going down this route. I think it's at times like this we can all learn a thing or two from Grand Master Yoda - Fear is the path to the dark side. Fear leads to anger. Anger leads to hate. Hate leads to suffering. Mark PS. My advice is for you not to reply to this, and let this thread die here, nothing positive for you can be achieved. That's why I post this matter to this list. On Sep 1, 2010, at 6:19 AM, Mark Proctor wrote: Because this is a legal matter no one in my team can do anything or discuss anything with you, we've been instructed that everything must go through RHT legal. Please discuss this directly with Richard Fontana: rfont...@redhat.com Mark On 31/08/2010 17:41, 山本 裕介 wrote: I have consulted RH legal dept. only to get no meaningful response. I guess Edson is the one who commit most of these files. The how and why they need to be uncommitted is attached to the Jira issue. Thanks, Yusuke On Sep 1, 2010, at 1:34 AM, Mauricio Salatino wrote: Hi Yusuke, good question. I'm not sure where is the right place, but you are only asking to rollback your changes right? who commit all your contributions to the jboss repo? I also saw that you mention: For several reasons, I decided to withdraw those contributions introduced from my spare time. can you mention those reasons? so we, as community can learn why you want to remove your contributions. I'm just curious. Greetings. On Tue, Aug 31, 2010 at 12:50 PM, 山本 裕介yamam...@gmail.com wrote: Where is the appropriate forum for copyright issues? On Sep 1, 2010, at 12:45 AM, Greg Barton wrote: This is not the appropriate forum for copyrighgt issues. GreG On Aug 31, 2010, at 9:40, 山本 裕介yamam...@gmail.com wrote: Hi, There's a copyright violation issue on Drools 5.1 release. Please remove the changes listed in the following issue. https://jira.jboss.org/browse/JBRULES-2660 Thanks, Yusuke ___ 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jbug.com.ar - Salatino Salaboy Mauricio - ___ 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Archived documentation for Drools 3?
On 01/09/2010 08:52, Alexandros Karypidis wrote: Hi all, The Drools web site only has the docs/tutorials/etc for version 4 onwards. I am looking for archived documentation of Drools version 3.x.y (I am new to Drools and need to work on a legacy application written with that version). Does anyone happen to have it? Kind regards, Alexandros You should be able to build the docs from here: http://anonsvn.jboss.org/repos/labs/labs/jbossrules/tags/3.0.6-GA/ Mark ___ 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] Problem with importing DrlParser and XmlDumper classes.
On 01/09/2010 10:07, tom ska wrote: Hi, I have problem with importing and using DrlParser XmlDumper classes. In Eclipse I get thoose communicate: Discouraged access: The type DrlParser is not accessible due to restriction on required library [path hier]\drools-compiler.jar I googled this problem (maybe not too long) but I haven't found a solution. I want to mark, that my Eclipse configuration is correct - I don't get error, but only warning. But this is annoying :) I tried to look in docs, but Drools 5.1 has no javadocs, and in Drools 5.0.'s javadocs there are no DrlParser and XmlDumper classes! Why? (In Drools 5.1. Expert User Guide 4.11.4 is written that Drools 5.1. uses those classes). I don't understand what's going on :) The XML stuff is unmaintained, so few people used it and it was a lot of work to do. Further more rather than pushing our own XML, we are waiting on RuleML and will hopefully adopt that as the default xml storage format. Tehre are Drools 5.1 docs. DrlParer and XmlDumper are considered internal classes and as such don't get published in the main javadocs, which is restrictied to drools-api. This allows us to provide a clear delineation on what is supported and unlikely to change and what is likely to change. http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/javadocs/index.html Mark Greetings, tom. ___ 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] Please ignore Yusuke Yamamoto do not reply (don't feed the troll)
It is unfortunate that in Open Source from time to time we have to deal with people of a more unstable nature, the inveritable troll. see http://drools-java-rules-engine.46999.n3.nabble.com/Re-rules-users-copyright-violation-issue-on-Drools-td1397208.html#a1397208 Anyway please don't feed the troll :) http://www.collegehumor.com/video:1926079 Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] copyright violation issue on Drools
Yusuke, At the time of your contributions to Drools and other projects you were a Red Hat employee. The Red Hat legal department has determined that it has the right to copy, modify and distribute your contributions under the Apache License version 2.0 and considers this matter closed. If you have any further need to discuss this please do so with Red Hat legal, - you have their contact details. Even if you were not a Red Hat employee, which you were at the time, you cannot undo an OSS code contribution, that is not how OSS licensing works. At the time the code was contributed in good faith under the Apache license, you cannot then decide at a later date to change your mind. The OSS licenses, be it ASL or LGPL or GPL, are designed specifically to provide certainty in that area. Without this level of certainty end user OSS adoption would be a minefield as every time developers fall out, which happens often, one could demand all their code be removed and this would impact everyone who has invested time installing that software in production systems. Mark On 31/08/2010 17:41, 山本 裕介 wrote: I have consulted RH legal dept. only to get no meaningful response. I guess Edson is the one who commit most of these files. The how and why they need to be uncommitted is attached to the Jira issue. Thanks, Yusuke On Sep 1, 2010, at 1:34 AM, Mauricio Salatino wrote: Hi Yusuke, good question. I'm not sure where is the right place, but you are only asking to rollback your changes right? who commit all your contributions to the jboss repo? I also saw that you mention: For several reasons, I decided to withdraw those contributions introduced from my spare time. can you mention those reasons? so we, as community can learn why you want to remove your contributions. I'm just curious. Greetings. On Tue, Aug 31, 2010 at 12:50 PM, 山本 裕介 yamam...@gmail.com mailto:yamam...@gmail.com wrote: Where is the appropriate forum for copyright issues? On Sep 1, 2010, at 12:45 AM, Greg Barton wrote: This is not the appropriate forum for copyrighgt issues. GreG On Aug 31, 2010, at 9:40, 山本 裕介 yamam...@gmail.com mailto:yamam...@gmail.com wrote: Hi, There's a copyright violation issue on Drools 5.1 release. Please remove the changes listed in the following issue. https://jira.jboss.org/browse/JBRULES-2660 Thanks, Yusuke ___ 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 mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - CTO @ http://www.plugtree.com http://www.plugtree.com/ - MyJourney @ http://salaboy.wordpress.com http://salaboy.wordpress.com/ - Co-Founder @ http://www.jbug.com.ar http://www.jbug.com.ar/ - Salatino Salaboy Mauricio - ___ 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
[rules-users] Rules Fest and Drools Bootcamp San Jose Oct 2010
Time is ticking, so don't forget about the San Jose Rules Fest Oct 2010: http://rulesfest.org/html/home.html It's a 3 day event of talks followed by a one day Boot Camp with separate rooms for Jess, DroolsjBPM, Grind Works and Open Rules. You may attend the talks or the bootcamps or both: http://rulesfest.org/html/registration.html The BootCamp will spend the morning introducing the 4 technologies: expert, fusion, flow and guvnor. We will also cover what's new in Drools 5.1. The afternoon will be an open floor where you can get time with us core developers for any questions, mentoring or assistance that you would like. Some Sample Talks: http://rulesfest.org/html/abstracts.html Artificial General Intelligence Engines, and Modes of Learning http://rulesfest.org/html/abstracts.html#abstract-21 Using Enterprise Architecture and Knowledge Engineering to Build Mobil's Lube Knowledge Base and Knowledge Supply Chain http://rulesfest.org/html/abstracts.html#abstract-5 Building a Distributed Rules Engine: an Experience Report http://rulesfest.org/html/abstracts.html#abstract-6 Three Good Reasons to Adopt the W3C Rule Interchange Format (RIF) http://rulesfest.org/html/abstracts.html#abstract-2 Emergence of a Unified Event-Driven Business Process Management (edBPM) Platform http://rulesfest.org/html/abstracts.html#abstract-10 Software Practices and Experiences of Rules in CEP Applications http://rulesfest.org/html/abstracts.html#abstract-19 Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools v5.1.0 KnowledgeAgent using Spring Beans
On 25/08/2010 13:08, KiranP wrote: hi all, I am trying to configure Drools v5.1.0 [Guvnor + Spring 3.0 + Web App.(Tomcat)] i don't understand how can i do it in the simplest way please point to some examples or provide concept to go with thanks and regards, Sorry looks like that one got missed in the documentation, luckily we have a unit test to show you: http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/kagents-beans.xml - Keep Working KiranP ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools and Java EE
Let's continue this discussin on the dev mailing list, as it's definitely of interest: http://www.jboss.org/drools/lists.html Mark On 25/08/2010 03:50, ljnelson wrote: Hello; I've made a JCA resource adapter for Drools. I've had to hack quite a bit to get it so that the KnowledgeAgent- and resource-scanning-related parts don't use Threads, but, instead, use the JCA-supplied WorkManager and BootstrapContext#createTimer() for asynchronous operations (like resource scanning and notifying). Here are some changes it would sure be nice to see, that I needed to hack around in order to make it so that a KnowledgeAgent-produced KnowledgeBase could be shared by Java EE components in a specification compliant manner: 1. ResourceChangeNotifierImpl#ProcessChangetSet is an inner class that is marked as public static, but which has a package-protected constructor. I have to create a new instance of this in order to create a ResourceChangeNotifierImpl subclass that doesn't use threads. I hope this constructor could be made public instead. Right now I'm calling setAccessible(true). Yecch. 2. ResourceFactory#setFactoryService(): sure do wish this were public, or that there were another way to install a ResourceFactoryService. I need to do this so that the scanner and notifier are under my control (and don't use Threads, but instead use Timers as provided by the JCA BootstrapContext class). It appears that I do have some control here in Drools 5.1 with the (undocumented) ServiceRegistry interface (how do I get an instance of it? what does it do? is it used pervasively?), but I don't know, since it's undocumented, whether it's the preferred way to do this sort of thing or not. 3. All this indirection is really quite clunky, especially given the META-INF/services facility. Was there a good reason this was not used? I'm sure there was something, because having to consult a factory for a service to get a provider to produce an instance of something is a bit much. Hacking around those limitations, I was able to produce a Drools resource adapter that vends KnowledgeBase instances as its user connection factories. This means to use it in a spec-compliant manner, you do this in your stateless (or stateful) session bean: @Resource private KnowledgeBase kb; ...and you get injected a wrapper KnowledgeBase that uses the Java EE container's JCA machinery to invoke operations on the shared KnowledgeBase. Is this something that would be interesting to other people? If so I am happy to open source it. Thanks for a great toolkit. Best, Laird ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Rileflow / Domain-specific processes / thread model
On 25/08/2010 13:38, jschmied wrote: Hi! When I define a ruleflow with parallel branches and have my own WorkItems in both branches do they get executed in parallel threads? no Mark Thanks juergen ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Difference between Rule Base and Knowledge Base
rulebase is legacy, it's still there for backwards comptability. Mark On 21/08/2010 15:47, Swapnil Sawant wrote: Hi, I had a very basic doubt. 'Rule Base' and 'Knowledge Base' are two different concepts (may be from implementation point of view )? I got this doubt when I was going through section '1.4.7.2. Drools execution server' of drools guvnor (v5.0) where it was written like : The drools execution server (drools-server) module is a war which you can deploy to execute knowledgebases (rulebases) remotely for any sort of client application The thing is that , I have created Knowledge base from changeset.xml as follows : kagent = KnowledgeAgentFactory.newKnowledgeAgent( MyRuleAgent ); kagent.applyChangeSet( ResourceFactory.newUrlResource( changesetUrl ) ); kbase = kagent.getKnowledgeBase(); Now if I wish to get Rule Base corresponding to my changeset(or rather my DRL file) using 'this kbase object' , how can I do that ? Thanks, Swapnil Sawant This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system. __ ___ 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] Migration from drools 5.0 to 5.1
On 20/08/2010 11:28, Swapnil Sawant wrote: Hi, Using drools 5.0 APIs, I have written a kind of framework component code using which I am able to achieve following functionalities successfully : - Running rules using changeset.xml - Executing workflow Example of framework component code can be : - Creating knowledge agent - Applying changeset to it - Building knowledge base out of that agent - Creating stateful knowledge session - Inserting fact types into this session , fire rules and get result Now that 5.1 stable version has been released, I want to know if I just replace the 5.0 jars with 5.1 jars in my framework code, would I be able to achieve same results as they were when I was using 5.0 API ? Or there is/are some change/s in the APIs ? There are no api changes. I wouldn't recommend you just stick the jars into an already running production environment though, as in some cases its src compatible but not binary compatible, due to changes in generics. So just make sure you recompile against those jars before deploying. Mark Thanks Regards, Swapnil Sawant This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system. __ ___ 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] Left and Right Unlinking - Community Project Proposal
In an effort to help encourage those thinking of learning more about the internals of rule engines. I have made a document on implementating left and right unlinking. I describe the initial paper in terms relevant to Drools users, and then how that can be implemented in Drools and a series of enhancements over the original paper. The task is actually surprisingly simple and you only need to learn a very small part of the Drools implementation to do it, as such it's a great getting started task. For really large stateful systems of hundreds or even thousands of rules and hundreds of thousands of facts it should save significant amounts of memory. http://blog.athico.com/2010/08/left-and-right-unlinking-community.html Any takers? Mark Introduction The following paper describes Left and Right unlinking enhancements for Rete based networks: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.45.6246 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.45.6246 A rete based rule engine consists of two parts of the network, the alpha nodes and the beta nodes. When an object is first inserted into the engine it is discriminated against by the object type Node, this is a one input and one output node. From there it may be further discriminated against by alpha nodes that constrain on literal values before reaching the right input of a join node in the beta part of the network. Join nodes have two inputs, left and right. The right input receives propagations consisting of a single object from the alpha part of the network. The left input receives propagations consisting of 1 or more objects, from the parent beta node. We refer to these propagating objects as LeftTuple and RightTuple, other engines also use the terms tokens or partial matches. When a tuple propagation reaches a left or right input it's stored in that inputs memory and it attempts to join with all possible tuples on the opposite side. If there are no tuples on the opposite side then no join can happen and the tuple just waits in the node's memory until a propagation from the opposite side attempts to join with it. If a given. It would be better if the engine could avoid populating that node's memory until both sides have tuples. Left and right unlinking are solutions to this problem. The paper proposes that a node can either be left unlinked or right unlinked, but not both, as then the rule would be completely disconnected from the network. Unlinking an input means that it will not receive any propagations and that the node's memory for that input is not populated, saving memory space. When the opposite side, which is still linked, receives a propagation the unlinked side is linked back in and receives all the none propagated tuples. As both sides cannot be unlinked, the paper describes a simple heuristic for choosing which side to unlink. Which ever side becomes empty first, then unlink the other. It says that on start up just arbitrarily chose to unlink one side as default. The initial hit from choosing the wrong side will be negligible, as the heuristic corrects this after the first set of propagations. If the left input becomes empty the right input is unlink, thus clearing the right input's memory too. The moment the left input receives a propagation it re-attaches the right input fully populating it's memory. The node can then attempt joins as normal. Vice-versa if the right input becomes empty it unlinks the left input. The moment the right input receives a propagation it re-attaches the left input fully populating it's memory so that the node can attempt to join as normal. Implementing Left and Right Unlinking for shared Knowledge Bases The description of unlinking in the paper won't work for Drools or for other rule engines that share the knowledge base between multiple sessions. In Drools the session data is decoupled from the main knowledge base and multiple sessions can share the same knowledge base. The paper above describes systems where the session data is tightly coupled to the knowledge base and the knowledge base has only a single session. In shared systems a node input that is empty for one session might not be empty for another. Instead of physically unlinking the nodes, as described in the paper, an integer value can be used on the session's node memory that indicates if the node is unlinked for left, right or both inputs. When the propagating node attempts to propagate instead of just creating a left or right tuple and pushing it into the node. It'll first retrieve the node's memory and only create the tuple and propagate if it's linked. This is great as it also avoids creating tuple objects that would just be discarded afterwards as there would be nothing to join with, making things lighter on the GC. However it means the engine looks up the node memory twice, once before propagating to the node and also inside of the node as it attempt to do
Re: [rules-users] Migration from drools 5.0 to 5.1
*KnowledgeAgentImpl *that's an internal class you should be sticking to the interfaces and only that which is in drools-api. Mark On 20/08/2010 17:34, Swapnil Sawant wrote: Hi Mark, Thanks for your reply. I tried migrating rules from 5.0 to 5.1 at first. For this, I just replaced drools-core and drools-api jar from 5.0 to 5.1. After doing replacement, I found following error while building the app : *KnowledgeAgentImpl.workflowOrRuleChanged cannot be resolved* This was kind of flag for notifying that KB has to be rebuilt. Any idea how to achieve same thing in 5.1 APIs ? Also, is there is any documentation/article/s about migration from 5.0 to 5.1 ? Thanks, Swapnil Sawant View this message in context: Re: Migration from drools 5.0 to 5.1 http://drools-java-rules-engine.46999.n3.nabble.com/Migration-from-drools-5-0-to-5-1-tp1241398p1248668.html Sent from the Drools - User mailing list archive http://drools-java-rules-engine.46999.n3.nabble.com/Drools-User-f47000.html at Nabble.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] PLEASE HELP: Possible concurrency issue in Drools
On 18/08/2010 00:49, Norman C wrote: Hi All, I've posted on this topic twice and logged a JIRA ticket (https://jira.jboss.org/browse/JBRULES-2651) as well. I've received no responses and the bug hasn't been updated since I logged it. I just replied to the jira. I'm committing the fix now. Mark This is a serious issue as it causes my production system to freeze up and it has to be restarted. It's consistently reproducible (usually takes a few days). Can someone please take a quick look at the code? Does the call to SingleThreadedObjectStore.addHandle in NamedEntryPoint.insert need to be preceded by acquiring the lock? Thanks again for your help. Norman *From:* Norman C rent_my_t...@yahoo.com *To:* rules-users@lists.jboss.org *Sent:* Wed, August 4, 2010 11:23:55 PM *Subject:* Re: Possible concurrency issue in Drools I've run into this issue a few more times. Should I log a JIRA ticket for this? Any advice would be appreciated. Thanks, Norman *From:* Norman C rent_my_t...@yahoo.com *To:* rules-users@lists.jboss.org *Sent:* Sat, July 31, 2010 9:56:26 PM *Subject:* Re: Possible concurrency issue in Drools All, Just wanted to mention, I'm using version 5.0.1 of Drools. Thanks, Norman *From:* Norman C rent_my_t...@yahoo.com *To:* rules-users@lists.jboss.org *Sent:* Sat, July 31, 2010 9:50:19 PM *Subject:* Possible concurrency issue in Drools Hi All, I recently ran into an issue which I believe might point to a concurrency issue. My server stopped processing new requests, so I did a thread dump. In examining the dump, I found that all of the processing threads, save two, were blocking while trying to acquire the lock in NamedEntryPoint.insert. Both of the other two threads appeared to be infinitely looping in the NamedEntryPoint.insert method. Here are snippets of the stack traces: ActiveMQ Session Task prio=10 tid=0x2aab0003b000 nid=0x7b98 runnable [0x4c086000..0x4c087c90] java.lang.Thread.State: RUNNABLEat org.drools.util.ObjectHashMap.remove(ObjectHashMap.java:121)at org.drools.common.SingleThreadedObjectStore.removeHandle(SingleThreadedObjectStore.java:150) at org.drools.common.NamedEntryPoint.retract(NamedEntryPoint.java:296) at org.drools.common.NamedEntryPoint.retract(NamedEntryPoint.java:245) at org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteExpireAction.execute(ReteooWorkingMemory.java:350) at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1488) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:158) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:122) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:80) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:28)at ActiveMQ Session Task prio=10 tid=0x5a35cc00 nid=0xdf6 runnable [0x4a268000..0x4a269a90] java.lang.Thread.State: RUNNABLEat org.drools.util.AbstractHashTable.resize(AbstractHashTable.java:115) at org.drools.util.ObjectHashMap.put(ObjectHashMap.java:78) at org.drools.common.SingleThreadedObjectStore.addHandle(SingleThreadedObjectStore.java:136) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:113) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:80) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:28) at So it seems like one while the first thread is holding the lock and is attempting to remove an object handle from the object store in NamedEntryPoint, the other thread is trying to resize that same object store in response to an addHandle call that puts it over the threshold. I haven't worked out exactly how these concurrent accesses to the same object store by two different threads causes an infinite loop in both threads, but it seems like the call to SingleThreadedObjectStore.addHandle should be preceded by acquiring the lock. Is this correct? I can imagine that resizing a large hash map could potentially take a long time and thus synchronizing this call could impact performance, but somehow, the action of resizing the table must be protected in some way from adversely impacting other operations on the table. Any help would be appreciated. thanks, Norman ___ 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] Design of Rule Engine
On 13/08/2010 17:44, Manav wrote: Hi, I am using the 5.x version of Drools and currently new. I am currently evaluating Drools for an internal project . The product's impressive and the support is absolutely superb. To design a new Rule Engine using Drools as the base are there any suggested design patters that i can take a look at ? If there are any best practices that should be followed and gotchas to be avoided it would be great if i could read about them. For example if i am writing rules where two files contain a common set of rules, is it possible to abstract out the common set of rules to a seperate DRL and have that DRL referenced in other DRL's ? you can't have one drl reference another. But you can include multiple drls in a changset. Mark These and other similar questions are what i am seeking answers to . Regards, Manav ___ 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] Don't forget RulesFest 2010
Don't forget RuleFest 2010 this October. Edson, Kris and myself will be there. And the event includes a one day bootcamp for those wanting to discuss their projects with us or run over examples with us to hand. http://rulesfest.org/html/home.html Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools Rule language resources Reg;
There is a wiki, but it's not that well maintained: http://community.jboss.org/wiki/JBossRules You can read any book on production rule systems and the examples should translate pretty well. So I'd recommend the Jess book and also the two Expert Systems books. If you scroll down here you will see some books recommended: http://jboss.org/drools/documentation.html Jess in Action: Java Rule-based Systems Ernest Friedman-Hill ISBN: 1930110898 Expert Systems: Principles and Programming Joseph Giarratano, Gary D. Riley ISBN: 0534384471 Introduction to Expert Systems Peter Jackson ISBN: 0201876868 Smart Enough Systems James Taylour, Neil Raden Print ISBN-10: 0-13-234796-2 Print ISBN-13: 978-0-13-234796-9 Mark On 10/08/2010 12:26, Dieter D'haeyere wrote: Resources I use: - the two Drools books from packt - The documentation that can be downloaded from the download site (surprise surprise ;) ) - Some interesting sites / blogs like: * http://lucazamador.wordpress.com/ * http://blog.athico.com/ * http://www.plugtree.com That is where I found most of the information. If you know about any other good resources, I am interested to hear about them. Btw, I didn't find a Drools wiki or forum but the community is quite active :) Dieter D'haeyere. 2010/8/10 Murali Venugopal murali.venugo...@sifycorp.com Hi, Thanks for your prompt reply. Actually, I'm not into middle of writing some rules. I'm working to implement Drools in a NMS product. Where Root-Cause Analysis is done to identify the exact problem in a network. I'm initially working on a POC trying to identify pros and cons. The approximate scenarios include timing window generating new co-related events escalation, and so on I'm not looking for a solution here. At least, I've not grown to that extent in Drools. I'm expecting someone to guide me. Is the resources I have is sufficient or is there some other resources available elsewhere? To be more precise, I want to the following possible keywords in a .drl file sematics syntax, and usage Regards, Murali Venugopal On 08/10/2010 03:04 PM, Dieter D'haeyere wrote: Maybe you could post an example of a rule you would like to define ... In that way, we can spot your exact problem better (and maybe see what kind of documentation is still lacking) Regards, Dieter D'haeyere. 2010/8/10 Murali Venugopal murali.venugo...@sifycorp.com Hi, I'm a newbie to Drools and Rules. I see this Mailing list provides lot of valuable information regarding Drools. Actually I'm looking for some good resources which helps in writing Rules. I.e Rule Syntax and Semantics. It's since 3 months I have started showing interest in Drools. But still I can't proceed more than the examples given in the books, which is not sufficient to work on real time projects. I'm referring books like 1. Drools JBoss Rules 5.0 2. JBoss Drools Business Rules also, 1. Drools documentation and Manuals. But still there's no definitive guides for writing rules. The Drools Documentation has listed all the possible keywords. But, their Syntax and Semantics are missing. I went through this entire Mailing List hoping someone would have asked this question before me. But in vain. So, please refer/point
Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi
On 10/08/2010 17:22, David Conde wrote: Hi Pavel, I've changed it over to use a stateless session and I'm seeing the same behavior. I've done some debugging and it seems to be very slow loading up the SessionConfiguration due to all of the loading that happens in ChainedProperties. it could well be that. When looking for property we search the available classpaths. With OSGi you have to add a lot of classpaths to it, so it searches them all... Other than telling it not to search the classpath for .properties files, not sure what else we can do here... Mark Thanks, Dave On 10 August 2010 13:53, Pavel Tavoda pavel.tav...@gmail.com mailto:pavel.tav...@gmail.com wrote: Interesting. Normally it should be fast. Try to change your patter and load binary compiled serialized package from disk. You can find it in documentation. Also consider using stateless session. Do you really need stateful session? Pavel 2010/8/9 David Conde dco...@calomtech.com mailto:dco...@calomtech.com: Is it possible that this might be invoking the compiler when a session is created? I have all of the init code in the service start call and stored as members of the service for reuse but I must create a new knowledge session for each run. Any ideas? Thanks, Dave -- Forwarded message -- From: David Conde dco...@calomtech.com mailto:dco...@calomtech.com Date: 9 August 2010 11:17 Subject: Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi To: Rules Users List rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org The line that it spikes on is StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();. Cheers, Dave On 9 August 2010 11:09, Pavel Tavoda pavel.tav...@gmail.com mailto:pavel.tav...@gmail.com wrote: Is it session creation or rule compilation? Pavel 2010/8/9 David Conde dco...@calomtech.com mailto:dco...@calomtech.com: Good Morning, I now have drools running on the Spring DM-Server but I am seeing a CPU spike when creating a StatefulKnowledgeSession. I've tested this outside of an OSGi environment and I don't see the spike. Does anyone know any settings that I can change that might make this go away? Thanks, Dave -- David Conde CTO Calom Technologies ___ 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 mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ 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 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
Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi
On 10/08/2010 19:53, David Conde wrote: Just to let people know, I've worked around this by only creating one SessionConfig object and caching it i.e StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession((KnowledgeSessionConfiguration)getSessionConfig());. What seemed to be happening was ChainedProperties was trying Classloader lookups that were very slow when running in an OSGi environment. Also with how the OSGi bundles are built the org.drools package is split and it makes it difficult to load up certain classes. I ended up having to use reflection to load up the SessionConfiguration class from a specific bundle. Maybe it's to do with how I'm importing the drools bundles into my project but it's one to watch out for if your using drools with OSGi. in general you shouldn't be looking up concrete implementations, just using what the factory services provide in drools-api; so the split packages shouldn't impact. I made a few of the services avaiable as osgi factory services, see docs for more details. Mark Thanks, Dave On 10 August 2010 17:46, David Conde dco...@calomtech.com mailto:dco...@calomtech.com wrote: ChainedProperties lives in org.drools.util.ChainedProperties and is created in SessionConfiguration(). The call is called during StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();. On 10 August 2010 17:36, Pavel Tavoda pavel.tav...@gmail.com mailto:pavel.tav...@gmail.com wrote: Can't you avoid using ChainedProperties, what is it? Can you send piece of code where you create session? Pavel 2010/8/10 David Conde dco...@calomtech.com mailto:dco...@calomtech.com: Hi Pavel, I've changed it over to use a stateless session and I'm seeing the same behavior. I've done some debugging and it seems to be very slow loading up the SessionConfiguration due to all of the loading that happens in ChainedProperties. Thanks, Dave On 10 August 2010 13:53, Pavel Tavoda pavel.tav...@gmail.com mailto:pavel.tav...@gmail.com wrote: Interesting. Normally it should be fast. Try to change your patter and load binary compiled serialized package from disk. You can find it in documentation. Also consider using stateless session. Do you really need stateful session? Pavel 2010/8/9 David Conde dco...@calomtech.com mailto:dco...@calomtech.com: Is it possible that this might be invoking the compiler when a session is created? I have all of the init code in the service start call and stored as members of the service for reuse but I must create a new knowledge session for each run. Any ideas? Thanks, Dave -- Forwarded message -- From: David Conde dco...@calomtech.com mailto:dco...@calomtech.com Date: 9 August 2010 11:17 Subject: Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi To: Rules Users List rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org The line that it spikes on is StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();. Cheers, Dave On 9 August 2010 11:09, Pavel Tavoda pavel.tav...@gmail.com mailto:pavel.tav...@gmail.com wrote: Is it session creation or rule compilation? Pavel 2010/8/9 David Conde dco...@calomtech.com mailto:dco...@calomtech.com: Good Morning, I now have drools running on the Spring DM-Server but I am seeing a CPU spike when creating a StatefulKnowledgeSession. I've tested this outside of an OSGi environment and I don't see the spike. Does anyone know any settings that I can change that might make this go away? Thanks, Dave -- David Conde CTO Calom Technologies ___ 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 mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Missing Drools Pipeline
On 09/08/2010 16:20, Thorsten wrote: Hello out there, I just installed the Drools 5.1 final and have read the updated documentation of Expert and Fusion. I wonder what happend to the Pipeline-classes? It seems like they are no longer inside the packages. Do you have more information? pipeline was an experimentation for how to use drools within a service architecture. We've now deprecated that in favour of using spring and camel. However drools-pipeline.jar is still there for those that were using it. But I'd strongly recommend you invest your time in camel, it's far superior. Mark Thanks and regards Thorsten ___ 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] drools 5.1 overview
On 05/08/2010 10:44, miguel machado wrote: Hi all, I just recently noticed that drools 5.1 is out and i'd like to congratulate the jboss team for this great milestone achievement. I've also noticed that there is separate documentation for this version on http://jboss.org/drools/documentation.html but i haven't been able to find the major updates on the project, since 5.0.0. I presume the /changelog/ so far is huge, so what I was looking is some kind of blog post or release announcement so i can update a few reports i've been writing on drools features, modules, architecture, API, requirements, integration mechanisms, etc. Any help is very much appreciated. Thanks in advance, _ miguel http://downloads.jboss.com/drools/docs/5.1.0.34406.FINAL/drools-introduction/html/ch02.html#d4e33 -- To understand what is recursion you must first understand recursion ___ 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] KnowledgeAgent and OSGI
The set of OSGi bundles dependencies can be used here:
http://www.jboss.org/drools/downloads.html
We test against spring:
http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/org.drools.osgi.test/src/test/java/org/drools/osgi/integrationtests/SimpleOsgiTest.java
This is our project that builds osgi-bundles and does some testing of
Drools against OSGi:
http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/
I have done some minimal OSGi docs. OSGI is stil la work in progress for
us and we have only osgi-ified some aspects Drools, although we have
done extensive work on the classloaders to make it fit better.
https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/docs/drools-integration/html/ch05.html
Please do test what we have, maybe help us OSGi-ify other aspects of drools.
Mark
On 04/08/2010 10:25, David Conde wrote:
Hi,
I'm trying to get drools-core and drools-compiler 5.1 running on
spring dm-server. Does anyone have the minimal list of OSGi bundles as
maven dependencies handy?
Thanks,
Dave
On 25 June 2010 13:59, mmarmol marcelo.mar...@gmail.com
mailto:marcelo.mar...@gmail.com wrote:
Hi, I have managed to install Drools-core and Drools-compiler in
my Equinox
osgi environment, I can compile rules and execute them just fine,
I was just
wandering how to configure a KnowledgeAgent using
KnowledgeBuilderFactoryService and KnowledgeBaseFactoryService. I
managed to
configure one but i am not able to reload rules when they change
at runtime.
I have started ResourceChangeScannerService and
ResourceChangeNotifierService, changeset related to the rules file
gets read
but no change gets implemented. An idea?
Here is the code:
ResourceFactory.getResourceChangeScannerService().start();
ResourceFactory.getResourceChangeNotifierService().start();
ServiceReference serviceRef = bc
.getServiceReference(ServiceRegistry.class.getName());
ServiceRegistry registry = (ServiceRegistry)
bc.getService(serviceRef);
KnowledgeBuilderFactoryService
knowledgeBuilderFactoryService = registry
.get(KnowledgeBuilderFactoryService.class);
KnowledgeBaseFactoryService
knowledgeBaseFactoryService = registry
.get(KnowledgeBaseFactoryService.class);
ResourceFactoryService resourceFactoryService =
registry
.get(ResourceFactoryService.class);
KnowledgeBuilderConfiguration kbConf =
knowledgeBuilderFactoryService
.newKnowledgeBuilderConfiguration(null, getClass()
.getClassLoader());
KnowledgeBuilder kbuilder =
knowledgeBuilderFactoryService
.newKnowledgeBuilder(kbConf);
ResourceFactoryService resource =
resourceFactoryService;
kbuilder.add(resource.newFileSystemResource(filePath),
ResourceType.CHANGE_SET);
if (kbuilder.hasErrors()) {
System.out.println(kbuilder.getErrors());
throw new
RuntimeException(kbuilder.getErrors().toString());
}
KnowledgeBaseConfiguration kbaseConf =
knowledgeBaseFactoryService
.newKnowledgeBaseConfiguration(null, getClass()
.getClassLoader());
KnowledgeBase kbase = knowledgeBaseFactoryService
.newKnowledgeBase(kbaseConf);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
KnowledgeAgentConfiguration aconf =
KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
aconf.setProperty(drools.agent.scanDirectories,
true);
aconf.setProperty(drools.agent.scanResources,
true);
aconf.setProperty(drools.agent.newInstance, false);
kagent = KnowledgeAgentFactory.newKnowledgeAgent(
CoreDroolsAgent,kbase,
aconf);
kagent.applyChangeSet(resource.newFileSystemResource(filePath));
Thanks in advance!
Cheers
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View this message in context:
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Sent from the Drools - User mailing list archive at Nabble.com.
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Re: [rules-users] KnowledgeAgent and OSGI
On 04/08/2010 11:06, David Conde wrote: Thanks Mark, Cheers for the info. I've seen the OSGi bundle zip (and the boot bundle list [1]) but it seemed to have quite a large amount of dependencies for just drools-core and drools-compiler. Do you know if all these bundles are required for this subset? If not would you happen to have the list of what is? If you don't have this handy I'll send it on so that you have it once I have figured it out :) The spring testing framework makes you list all the dependencies manually, which it resolves against that osgi-bundles.zip contents. This is the file: http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/org.drools.osgi.test/src/test/resources/boot-bundles.properties?r=HEAD It does contain a lot more than normal, mostly I just kept adding stuff intil OSGi would resolve and the unit tests pass. It may be possible not to include things like jaxb (especially if you are on jdk6) and some of the other peripheral jars. We have used the spring repository and sometimes the transitivie dependencies are not left optional which means they are dragged in, and even if we don't us them OSGi will not resolve without them there. Maybe check out trunk and help us work on this and improve it? The problem with OSGi is so few dependencies are are published as OSGi bundles, which means we have to rely on things like the spring osgi repository. That automates the building of the bundles and doesn't always handle optional dependencies that well. Mark [1] http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/osgi-bundles/org.drools.osgi.test/src/test/resources/boot-bundles.properties - Dave 2010/8/4 Mark Proctor mproc...@codehaus.org mailto:mproc...@codehaus.org The set of OSGi bundles dependencies can be used here: http://www.jboss.org/drools/downloads.html We test against spring: http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/org.drools.osgi.test/src/test/java/org/drools/osgi/integrationtests/SimpleOsgiTest.java This is our project that builds osgi-bundles and does some testing of Drools against OSGi: http://fisheye.jboss.org/browse/JBossRules/trunk/osgi-bundles/ I have done some minimal OSGi docs. OSGI is stil la work in progress for us and we have only osgi-ified some aspects Drools, although we have done extensive work on the classloaders to make it fit better. https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/docs/drools-integration/html/ch05.html Please do test what we have, maybe help us OSGi-ify other aspects of drools. Mark On 04/08/2010 10:25, David Conde wrote: Hi, I'm trying to get drools-core and drools-compiler 5.1 running on spring dm-server. Does anyone have the minimal list of OSGi bundles as maven dependencies handy? Thanks, Dave On 25 June 2010 13:59, mmarmol marcelo.mar...@gmail.com mailto:marcelo.mar...@gmail.com wrote: Hi, I have managed to install Drools-core and Drools-compiler in my Equinox osgi environment, I can compile rules and execute them just fine, I was just wandering how to configure a KnowledgeAgent using KnowledgeBuilderFactoryService and KnowledgeBaseFactoryService. I managed to configure one but i am not able to reload rules when they change at runtime. I have started ResourceChangeScannerService and ResourceChangeNotifierService, changeset related to the rules file gets read but no change gets implemented. An idea? Here is the code: ResourceFactory.getResourceChangeScannerService().start(); ResourceFactory.getResourceChangeNotifierService().start(); ServiceReference serviceRef = bc .getServiceReference(ServiceRegistry.class.getName()); ServiceRegistry registry = (ServiceRegistry) bc.getService(serviceRef); KnowledgeBuilderFactoryService knowledgeBuilderFactoryService = registry .get(KnowledgeBuilderFactoryService.class); KnowledgeBaseFactoryService knowledgeBaseFactoryService = registry .get(KnowledgeBaseFactoryService.class); ResourceFactoryService resourceFactoryService = registry .get(ResourceFactoryService.class); KnowledgeBuilderConfiguration kbConf = knowledgeBuilderFactoryService .newKnowledgeBuilderConfiguration(null, getClass() .getClassLoader
[rules-users] 5.1.0
We haven't put it up on the official download site yet, just working on that at the moment. But here are the 5.1.0 artifacts: https://hudson.jboss.org/hudson/job/drools/4250/artifact/trunk/target/ Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] StackOverflowError when serializing KnowledgeBase
On 27/07/2010 22:36, Andargor wrote:
Second try, sorry for spamming. Does anyone have an idea why serialization of
a large knowledge base fails with a stack error?
It's to do with Java's poor ability to serialise linked lists:
https://jira.jboss.org/browse/JBRULES-2335
https://jira.jboss.org/browse/JBRULES-946
Mark
A.
--- On Thu, 7/22/10, Andargorandar...@yahoo.com wrote:
From: Andargorandar...@yahoo.com
Subject: Re: [rules-users] StackOverflowError when serializing KnowledgeBase
To: rules-users@lists.jboss.org
Date: Thursday, July 22, 2010, 8:12 PM
Sorry, forgot to mention, I have
tried 5.1.0M1, and yesterday's snapshot.
--- On Thu, 7/22/10, Andargorandar...@yahoo.com
wrote:
From: Andargorandar...@yahoo.com
Subject: StackOverflowError when serializing
KnowledgeBase
To: rules-users@lists.jboss.org
Date: Thursday, July 22, 2010, 8:10 PM
Hello,
After adding a few hundred rules, and with the same
code,
KnowledgeBase serialization has started to generate
StackOverflowError. I have increased the VM stack size
as a
workaround, but I was hoping to implement something
more
robust.
I specifically need to serialize the KnowledgeBase,
and not
the session.
I'm using this code:
private void dumpKnowledgeBase(String file,
KnowledgeBase kbase) {
try {
FileOutputStream ostream = new
FileOutputStream(file);
DroolsObjectOutputStream p = new
DroolsObjectOutputStream(ostream);
p.writeObject(kbase);
p.flush();
ostream.close();
}
catch
(Exception e) {
System.err.println(e);
e.printStackTrace();
System.err.println(Could not write
knowledge base +file);
}
}
This is due to writeObject recursion? Any ideas?
A.
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Re: [rules-users] 5.1.0 CR1: Drools Spring Configuration Changed?
use the kstore element. You already have the various jpa settings in spring as beans. So you can retrieve those and pass them as parameters to the kstore in java code; which follows exactly the same interface as JPAKnowledgeService. Mark On 28/07/2010 15:41, tolitius wrote: 1. If there is no answer for this, I will resurrect JPAKnowledgeServiceBean, cause it is actually one place to deal with creating / reloading Sessions + it has a good simple APIs: createNew...() load...( id ) hence makes sense. 2. Under the covers it'll have to probably use KnowledgeStoreService and /or JPAKnowledgeService.. 3. Interesting thing is that I have to recreate Environment now every time before reloading the Session, otherwise the entityManager is closed, and it does not respond to a simple Spring AOP TM wrapping... But that is another issue.. /Anatoly ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools Gunvor and Oryx integration
On 29/07/2010 04:05, Han Ming Low wrote: Hi, Just for information. In order for the Oryx integration to work, you need to install the oryx designer available from http://anonsvn.jboss.org/repos/labs/labs/jbossrules/contrib/designer/ I would add that the .war is provided by the Antoine Toulme, who maintains a branch at github, with the aim of merging changes back into the main oryx tree, and you can get the latest version there: http://github.com/atoulme http://github.com/intalio/process-designer/ Install the designer.war into JBoss and make sure you can access it from localhost:8080/designer Then, in the download drools-5.1.0.CR1-install.zip, you should see a Evaluation.bpmn Copy this file into your Guvnor repository through WebDAV into the defaultPackage (note : not any other package) Once you have done this, you should see the process under the defaultPackage Processes in Guvnor. And when you double click on it, you should have the bpm loaded in the designer. A side note is that the designer will only load bpmn file, for obvious reason that the rf format is not supported by oryx. So, you cannot create a process from Guvnor and load it in the designer because the default type is rf. Hope this helps. Han Ming 2010/7/28 Patricia Bogoevici patriciabogoev...@yahoo.com mailto:patriciabogoev...@yahoo.com Hi all, I found a preview of the Guvnor /Oryx integration here (http://blog.athico.com/2010/06/browser-based-bpmn2-authoring-in-drools.html). I tried Drools Guvnor 5.1.0.CR1, but there is nothing about this integration, one can only view the flow diagram. Can any of you tell when the integration with Oryx will be available for testing? Someone commented to the blog entry, that it'll be for 5.1 version, but as I said, it is not on 5.1.0.CR1. Thanks, Patricia ___ 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
Re: [rules-users] 5.1.0 CR1: Drools Spring Configuration Changed?
That bean isn't used any more. Spring has undergone a lot of improvements. All interaction with drools should be done via the custom namespace elements, see the release notes for more details https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/docs/drools-introduction/html/ch02.html#d4e27 And here are sample xml from unit tests: http://fisheye.jboss.org/browse/JBossRules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/beans.xml?r=HEAD http://fisheye.jboss.org/browse/JBossRules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/no-node-beans.xml?r=HEAD http://fisheye.jboss.org/browse/JBossRules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/kagents-beans.xml?r=HEAD http://fisheye.jboss.org/browse/JBossRules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/beans/persistence/beansVarPersistence.xml?r=HEAD http://fisheye.jboss.org/browse/JBossRules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/beans/persistence/VariablePersistenceStrategyProcess.rf?r=HEAD http://fisheye.jboss.org/browse/JBossRules/trunk/drools-container/drools-spring/src/test/resources/org/drools/container/spring/beans/persistence/beans.xml?r=HEAD Mark On 26/07/2010 21:29, tolitius wrote: No. This is a different one: bean id=knowledgeProvider class=org.drools.container.spring.beans.persistence.JPAKnowledgeServiceBean property name=entityManagerFactory ref=entityManagerFactory / property name=transactionManager ref=txManager / property name=variablePersisters util:map ... ... /util:map /property property name=kbase drools:kbase id=kbase node=node1 drools:resource type=DRF source=classpath:./META-INF/process/ultra-simple-process.rf / drools:resource type=DRL source=classpath:./META-INF/rule/simple-rule.drl / / /drools:kbase /property /bean This works in 5.1.0 M2, it does not in 5.1.0 CR1 + /Anatoly ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] 5.1.0 CR1: Drools Spring Configuration Changed?
On 26/07/2010 22:23, tolitius wrote: that is interesting: drools:work-item-handlers drools:work-item-handler name=handlername ref=handlerid / /drools:work-item-handlers I already implemented it via simpleutil:map, and have a team of ~ 50 developers already using it for the last three months ( did not know it was coming with namespace support ). Although as I think about it, since we have processes and sub-processes, I would rather keep workitem handlers process oriented rather than session oriented. Two reasons: 1. Workitem is a process oriented entity Work Items are a generic concept and not process oriented, we have plans to make them easily usable from the guided editor too. 2. Sub-Process configuration can be de-coupled, and hence painlessly modified / reused not sure what you mean. Please provide an xml sample of what you would like added. But all the namespace additions are truly a great addition to the Drools portfolio. I did a lot of work streamlining the xml for compact declarativeness. I have a question about this new approach though: Using JPAKnowledgeServiceBean, anytime I needed to create a new Session, I could: StatefulKnowledgeSession knowledgeSession = knowledgeProvider.newStatefulKnowledgeSession(); Using JPAKnowledgeServiceBean, anytime I needed to reload a Session, I could: knowledgeSession = knowledgeProvider.loadStatefulKnowledgeSession( sessionId ); Spring can create the session for you, as in the example. Or you can get spring to create a kstore reference and use that to instantiate the ksession. drools:kstore id=kstore1 / Which returns a KnowledgeStoreService implementation: StatefulKnowledgeSession newStatefulKnowledgeSession(KnowledgeBase kbase, KnowledgeSessionConfiguration configuration, Environment environment); StatefulKnowledgeSession loadStatefulKnowledgeSession(int id, KnowledgeBase kbase, KnowledgeSessionConfiguration configuration, Environment environment); I always have one Session to one Business Process mapping ( there are multiple reasons for that outside of the scope of this question ). What is the new way you have in mind? [ I have ideas, I just want to make sure I don't double work you again ] Thank you Mark, /Anatoly P.S. All Sessions / Processes + RuleGroupsFlowsAgendas... are persistent [ JPA ] ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Uploading models to Guvnor
normally this means someone uploaded a .jar of .java files, not .class. You need to compile the .java files in the .jar. Mark On 24/07/2010 22:56, Esteban Aliverti wrote: Could you please post your jar here? El jul 24, 2010 4:24 p.m., james corrigan jamescor...@gmail.com mailto:jamescor...@gmail.com escribió: Hi All, I am having severe amount of trouble trying to get started in Guvnor, i cannot load any jar files at all - i can upload them but not use them when i try write a guided rule it tells me that no models are loaded even though Guvnor is telling me its there. I create a new package, then upload my jar file, then i add a category and try to save but get the following error: Unable to validate package configuration (eg, DSLs, models) for [Drols]. Suggestion completions may not operate correctly for graphical editors for this package. I am running out of time plus patience trying to get this to work, i have been following the book: JBoss Drools Business Rules, and the online documentation but to no avail. Any help is much appreciated. Kind regards, James. ___ 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
Re: [rules-users] Decision Tree input?
On 23/07/2010 20:23, ramesh76 wrote: Hi, I am looking to implement Decision tree using Drools. I am looking for some information regarding the Drools Decision tree setup and implementation with some examples, any help with this is really appreciated Drools does not have out of the box DecisionTree support. Mark Thanks, Ramesh ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools with spring
On 23/07/2010 02:50, sonyt...@gmail.com wrote: Hi thanks for reply Do I need drools server I am mainly using drools flow drools-server uses drools-spring and drools-camel. drools-spring can be used alone. Drools-server can just be used as an example project to get an idea of how it works, likewise look at the drools-spring unit tests to get more of an idea. Mark Regards Sonu Sent from my iPod On 23-Jul-2010, at 9:26 AM, Mark Proctormproc...@codehaus.org wrote: On 23/07/2010 01:54, sonyt...@gmail.com wrote: Hi all I would like to integrate drools with spring If any body have example project share with me I will use spring 3 with drools 5.1 http://lucazamador.wordpress.com/2010/07/20/drools-server-configuration-updated/ http://blog.athico.com/2010/07/declarative-rest-services-for-drools.html Mark Thanks in advance Sonu Sent from my iPod ___ 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 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] Drools and mvel
On 22/07/2010 00:49, Paul Edwards wrote:
Hi Mark,
I assume you are referring to: drools.dialect.mvel.strict =true|false as I
cannot see any other config items. I have already tried setting that to false
(I should have put that in the first email) but it didn't work.
I'm guessing that leaves me needing to raise a Jira issue???
MVELDialectConfiguration
public void setLangLevel(int langLevel) {
--
Paul Edwards
Solutions Engineer
Identity Solutions Practice
-
hyro
P Oz +61 2 9215 4347
M NZ +64 21 2588695
M Oz +61 4 2091 3987
W www.hyro.com
E paul.edwa...@hyro.com
From: rules-users-boun...@lists.jboss.org
[rules-users-boun...@lists.jboss.org] On Behalf Of Mark Proctor
[mproc...@codehaus.org]
Sent: Thursday, 22 July 2010 1:01 a.m.
To: Rules Users List
Subject: Re: [rules-users] Drools and mvel
It is possible to turn off the language constraint for MVEL in drools, see
KnowledgeBuilderConfiguration, which should cause the static field not to be
set.
Mark
On 21/07/2010 15:02, Edson Tirelli wrote:
Hi Paul,
Your analysis is correct. The problem is that these configurations in
MVEL are made using static properties and so they affect all uses of MVEL in
a single classloading hierarchy. Unfortunately, I don't think there is
anything you can do right now, other than open a JIRA in MVEL to help
convince Mike to make all configurations non-static in MVEL:
http://jira.codehaus.org/browse/MVEL
Edson
2010/7/21 Paul Edwardspaul.edwa...@hyro.commailto:paul.edwa...@hyro.com
Hi guys,
I have an issue which involves smooks, drools and mvel.
Quick explanation, the unit test is just a smooks run. Nothing complicated.
The test passes happily. It contains an expression that involves an MVEL IF
statement.
Now if I add a drools startup (I'm not using drools in the test, I'm just
initialising it), the unit test now fails on the IF statement. The
exception received is:
org.milyn.cdr.SmooksConfigurationException: Error invoking @Initialize method
'initialize' on class 'org.milyn.javabean.BeanInstancePopulator'.
at org.milyn.cdr.annotation.Configurator.invoke(Configurator.java:457)
at
org.milyn.cdr.annotation.Configurator.initialise(Configurator.java:439)
at
org.milyn.cdr.annotation.Configurator.configure(Configurator.java:91)
at
org.milyn.cdr.annotation.Configurator.configure(Configurator.java:66)
at
org.milyn.delivery.JavaContentHandlerFactory.create(JavaContentHandlerFactory.java:63)
at
org.milyn.delivery.ContentDeliveryConfigBuilder$ContentHandlerExtractionStrategy.addCDU(ContentDeliveryConfigBuilder.java:623)
at
org.milyn.delivery.ContentDeliveryConfigBuilder$ContentHandlerExtractionStrategy.applyCDUStrategy(ContentDeliveryConfigBuilder.java:548)
at
org.milyn.delivery.ContentDeliveryConfigBuilder$ContentHandlerExtractionStrategy.applyStrategy(ContentDeliveryConfigBuilder.java:536)
at
org.milyn.delivery.ContentDeliveryConfigBuilder$SmooksResourceConfigurationTableIterator.iterate(ContentDeliveryConfigBuilder.java:711)
at
org.milyn.delivery.ContentDeliveryConfigBuilder$SmooksResourceConfigurationTableIterator.access$300(ContentDeliveryConfigBuilder.java:690)
at
org.milyn.delivery.ContentDeliveryConfigBuilder.extractContentHandlers(ContentDeliveryConfigBuilder.java:484)
at
org.milyn.delivery.ContentDeliveryConfigBuilder.load(ContentDeliveryConfigBuilder.java:349)
at
org.milyn.delivery.ContentDeliveryConfigBuilder.getConfig(ContentDeliveryConfigBuilder.java:146)
at
org.milyn.container.standalone.StandaloneExecutionContext.init(StandaloneExecutionContext.java:91)
at
org.milyn.container.standalone.StandaloneExecutionContext.init(StandaloneExecutionContext.java:65)
at org.milyn.Smooks.createExecutionContext(Smooks.java:383)
at org.milyn.Smooks.createExecutionContext(Smooks.java:346)
at
com.hyro.telstrapoc.smooks.SmooksTransformTest.runSmooksTransform(SmooksTransformTest.java:215)
at
com.hyro.telstrapoc.smooks.SmooksTransformTest.testSmooks(SmooksTransformTest.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate
Re: [rules-users] Drools Planner or Drools Solver
On 20/07/2010 01:05, Nick Heudecker wrote: I'm confused as to the naming of Drools Solver. The docs all say Solver, but when I look for a current snapshot [1] and available downloads, I'm only seeing Planner. Which is it? Thanks for the clarification. [1] https://repository.jboss.org/nexus/content/repositories/snapshots It was renamed from solver to planner. Mark ___ 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] Improving Drools Memory Performance
/Improving_Drools_Memory_Performance On Sat, Jul 10, 2010 at 12:28 AM, Wolfgang Laun wolfgang.l...@gmail.com mailto:wolfgang.l...@gmail.com wrote: On 9 July 2010 14:14, Mark Proctor mproc...@codehaus.org mailto:mproc...@codehaus.org wrote: You have many objects there that are not constrained; I have an inkling that the functions.*() are hiding just these contraints, It's certainly the wrong way, starting with oodles of node pairs, just to pick out connected ones by fishing for the connecting edge. And this is worsened by trying to find two such pairs which meet at some DomainSource Guesswork, hopefully educated ;-) -W if there are multiple versions of those objects you are going to get massive amounts of cross products. Think in terms of SQL, each pattern you add is like an SQL join. Mark On 09/07/2010 09:20, Jevon Wright wrote: Hi everyone, I am working on what appears to be a fairly complex rule base based on EMF. The rules aren't operating over a huge number of facts (less than 10,000 EObjects) and there aren't too many rules (less than 300), but I am having a problem with running out of Java heap space (set at ~400 MB). Through investigation, I came to the conclusion that this is due to the design of the rules, rather than the number of facts. The engine uses less memory inserting many facts that use simple rules, compared with inserting few facts that use many rules. Can anybody suggest some tips for reducing heap memory usage in Drools? I don't have a time constraint, only a heap/memory constraint. A sample rule in my project looks like this: rule Create QueryParameter for target container of DetailWire when container : Frame( ) schema : DomainSchema ( ) domainSource : DomainSource ( ) instance : DomainIterator( ) selectEdge : SelectEdge ( eval ( functions.connectsSelect(selectEdge, instance, domainSource )) ) schemaEdge : SchemaEdge ( eval ( functions.connectsSchema(schemaEdge, domainSource, schema )) ) source : VisibleThing ( eContainer == container ) target : Frame ( ) instanceSet : SetWire ( eval(functions.connectsSet(instanceSet, instance, source )) ) detail : DetailWire ( ) eval ( functions.connectsDetail(detail, source, target )) pk : DomainAttribute ( eContainer == schema, primaryKey == true ) not ( queryPk : QueryParameter ( eContainer == target, name == pk.name http://pk.name ) ) eval ( handler.veto( detail )) then QueryParameter qp = handler.generatedQueryParameter(detail, target); handler.setName(qp, pk.getName()); queue.add(qp, drools); // wraps insert(...) end I try to order the select statements in an order that will reduce the size of the cross-product (in theory), but I also try and keep the rules fairly human readable. I try to avoid comparison operators like and. Analysing a heap dump shows that most of the memory is being used in StatefulSession.nodeMemories PrimitiveLongMap. I am using a StatefulSession; if I understand correctly, I can't use a StatelessSession with sequential mode since I am inserting facts as part of the rules. If I also understand correctly, I'd like the Rete graph to be tall, rather than wide. Some ideas I have thought of include the following: 1. Creating a separate intermediary meta-model to split up the sizes of the rules. e.g. instead of (if A and B and C then insert D), using (if A and B then insert E; if E and C then insert D). 2. Moving eval() statements directly into the Type(...) selectors. 3. Removing eval() statements. Would this allow for better indexing by the Rete algorithm? 4. Reducing the height, or the width, of the class hierarchy of the facts. e.g. Removing interfaces or abstract classes to reduce the possible matches. Would this make a difference? 5. Conversely, increasing the height, or the width, of the class hierarchy. e.g. Adding interfaces or abstract classes to reduce field accessors. 6. Instead of using EObject.eContainer, creating an explicit containment property in all of my EObjects. 7. Creating a DSL that is human-readable, but allows for the automation of some of these approaches. 8. Moving all rules into one rule file, or splitting up rules into smaller files. Is there kind of profiler for Drools that will let me see the size (or the memory usage) of particular rules, or of the memory used
Re: [rules-users] lock-on-active, why keeps evaluating?
The optimisation to disconnect the parts of the rete network that are currentnly not able to fire, due to ruleflow-group, has not been done. So it'll only stop the firing, not stop the evaluation. Any takers? Mark On 16/07/2010 20:39, mmarmol wrote: He guys, I am using the meta-data lock-on-active on some rules and is working great, but i have seen rules with lock-on-active = true are been eveluated everytime the facts are modified even after they have been fired. Why is that? I dont see the point of evaluating a rule with lock-on-active true when it has already fired, it wont fire again. There is a way to resolve this? or to implement something to avoid reevaluation? I am using drools 5.1.0M2 with a StatefulKnowledgeSession. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] lock-on-active, why keeps evaluating?
On 16/07/2010 22:07, mmarmol wrote: The enabled meta-data works in the same way, rules get evaluated they just wont get executed. you can physically remove the rule if it's no longer needed and you think it's taking up evaluation space. Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Improving Drools Memory Performance
On 16/07/2010 04:16, Jevon Wright wrote: Hi again, By removing all of the simple eval()s from my rules, I have cut heap usage by at least an order of magnitude. However this still isn't enough. Since I am trying to reduce the cross-product size (as in SQL), I recall that most SQL implementations have a DESCRIBE SELECT query which provides real-time information about the complexity of a given SQL query - i.e. the size of the tables, indexes used, and so on. Is there any such tool available for Drools? Are there any tools which can provide clues as to which rules are using the most memory? no, but sounds like a nice side project :) Alternatively, I am wondering what kind of benefit I could expect from using materialized views to create summary tables; that is, deriving and inserting additional facts. This would allow Drools to rewrite queries that currently use eval(), but would increase the size of working memory, so would this actually save heap size? To what extent does Drools rewrite queries? Is there any documentation describing the approaches used? The only rewriting we do is on literal constraints, moving == ones to the front, that's it. Also make sure you are using trunk, which is more memory efficient for modifies: https://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/ Mark Any other ideas on how to reduce heap memory usage? I'd appreciate any ideas :) Thanks Jevon On Mon, Jul 12, 2010 at 5:56 PM, Jevon Wright je...@jevon.org mailto:je...@jevon.org wrote: Hi Wolfgang and Mark, Thank you for your replies! You were correct: my eval() functions could generally be rewritten into Drools directly. I had one function connectsDetail that was constraining unidirectional edges, and could be rewritten from: detail : DetailWire ( ) eval ( functions.connectsDetail(detail, source, target) ) to: detail : DetailWire ( from == source, to == target ) Another function, connects, was constraining bidirectional edges, and could be rewritten from: sync : SyncWire( ) eval ( functions.connects(sync, source, target) ) to: sync : SyncWire( (from == source to == target) || (from == target to == source) ) Finally, the veto function could be rewritten from: detail : DetailWire ( ) eval ( handler.veto(detail) ) to: detail : DetailWire ( overridden == false ) I took each of these three changes, and evaluated them separately [1]. I found that: 1. Inlining 'connectsDetail' made a huge difference - 10-30% faster execution and 50-60% less allocated heap. 2. Inlining 'connects' made very little difference - 10-30% faster execution, but 0-20% more allocated heap. 3. Inlining 'veto' made no difference - no significant change in execution speed or allocated heap. I think I understand why inlining 'connects' would improve heap usage - because the rules essentially have more conditionals? I also understand why 'veto' made no difference - for most of my test models, overridden was never true, so adding this conditional was not making the cross product set any smaller. Finally, I also tested simply joining all of the rules together into one file. This happily made no difference at all (although made it more difficult to edit). So I think I can safely conclude that eval() should be used as little as possible - however, this means that the final rules are made more complicated and less human-readable, so a DSL may be best for my common rule patterns in the future. Thanks again! Jevon [1]: http://www.jevon.org/wiki/Improving_Drools_Memory_Performance On Sat, Jul 10, 2010 at 12:28 AM, Wolfgang Laun wolfgang.l...@gmail.com mailto:wolfgang.l...@gmail.com wrote: On 9 July 2010 14:14, Mark Proctor mproc...@codehaus.org mailto:mproc...@codehaus.org wrote: You have many objects there that are not constrained; I have an inkling that the functions.*() are hiding just these contraints, It's certainly the wrong way, starting with oodles of node pairs, just to pick out connected ones by fishing for the connecting edge. And this is worsened by trying to find two such pairs which meet at some DomainSource Guesswork, hopefully educated ;-) -W if there are multiple versions of those objects you are going to get massive amounts of cross products. Think in terms of SQL, each pattern you add is like an SQL join. Mark On 09/07/2010 09:20, Jevon Wright wrote: Hi everyone, I am working on what appears to be a fairly complex rule base based on EMF. The rules aren't operating over a huge number of facts (less than 10,000 EObjects) and there aren't too many rules (less than 300), but I am having a problem with running out of Java
Re: [rules-users] Help: Web based console for editing BPMN2 in 5.1M2 or SNAPSHOT
On 12/07/2010 03:06, Low Han Ming NCS wrote: Hi, Sorry, I would just like to check if there is any update on where can I get the WAR for the oryx. I would really like to evaluate Drools for a project. http://anonsvn.jboss.org/repos/labs/labs/jbossrules/contrib/designer/ Thanks. Han Ming *From:* rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] *On Behalf Of *Mark Proctor *Sent:* Monday, July 05, 2010 9:00 PM *To:* rules-users@lists.jboss.org *Subject:* Re: [rules-users] Help: Web based console for editing BPMN2 in 5.1M2 or SNAPSHOT There is an additional WAR for oryx that must be installed first, kris should be able to provide more details on that. Mark On 05/07/2010 07:17, Low Han Ming NCS wrote: Hi, I saw on the blog post that there will be a browser base tool to edit BPMN2 processes in Guvnor 5.1. http://blog.athico.com/2010/06/browser-based-bpmn2-authoring-in-drools.html I have downloaded the 5.1M2 and also the last successful build from http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/ After I've added a sample.bpmn file to the repository through Eclipse, it shows an error that the requested resource /designer/editor is not available when I try to open it in guvnor. I suppose this means that the BPMN editor which is suppose to be an Oryx based editor is a webapp with a context /designer? Can anyone advise how do I go about getting the designer webapp or build from the source? I have tried to download the src from drools-5.1.0.SNAPSHOT-src.zip and build the drools-guvnor module, but it didn't seems to have the editor loaded either. Attached is a screenshot of my gunvor. Thanks for any advise. Han Ming ___ 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
Re: [rules-users] Modify objects which are not part of the LHS
On 10/07/2010 23:17, davids wrote: I am new to the tool and using guvnor to post and test my rules. I have about 10 rules which are executed based on adding more facts to the WM. in order to trigger the relevant rules ,I am using a temp object which is updated by a Modify statement. Is there any way on the RHS to modify objects which are not part of the LHS? Something somewhere needs to have a reference to it, either a lookup via some gobal, or a variable from the LHS has a reference to it. M ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Improving Drools Memory Performance
You have many objects there that are not constrained; if there are multiple versions of those objects you are going to get massive amounts of cross products. Think in terms of SQL, each pattern you add is like an SQL join. Mark On 09/07/2010 09:20, Jevon Wright wrote: Hi everyone, I am working on what appears to be a fairly complex rule base based on EMF. The rules aren't operating over a huge number of facts (less than 10,000 EObjects) and there aren't too many rules (less than 300), but I am having a problem with running out of Java heap space (set at ~400 MB). Through investigation, I came to the conclusion that this is due to the design of the rules, rather than the number of facts. The engine uses less memory inserting many facts that use simple rules, compared with inserting few facts that use many rules. Can anybody suggest some tips for reducing heap memory usage in Drools? I don't have a time constraint, only a heap/memory constraint. A sample rule in my project looks like this: rule Create QueryParameter for target container of DetailWire when container : Frame( ) schema : DomainSchema ( ) domainSource : DomainSource ( ) instance : DomainIterator( ) selectEdge : SelectEdge ( eval ( functions.connectsSelect(selectEdge, instance, domainSource )) ) schemaEdge : SchemaEdge ( eval ( functions.connectsSchema(schemaEdge, domainSource, schema )) ) source : VisibleThing ( eContainer == container ) target : Frame ( ) instanceSet : SetWire ( eval(functions.connectsSet(instanceSet, instance, source )) ) detail : DetailWire ( ) eval ( functions.connectsDetail(detail, source, target )) pk : DomainAttribute ( eContainer == schema, primaryKey == true ) not ( queryPk : QueryParameter ( eContainer == target, name == pk.name ) ) eval ( handler.veto( detail )) then QueryParameter qp = handler.generatedQueryParameter(detail, target); handler.setName(qp, pk.getName()); queue.add(qp, drools); // wraps insert(...) end I try to order the select statements in an order that will reduce the size of the cross-product (in theory), but I also try and keep the rules fairly human readable. I try to avoid comparison operators like and. Analysing a heap dump shows that most of the memory is being used in StatefulSession.nodeMemories PrimitiveLongMap. I am using a StatefulSession; if I understand correctly, I can't use a StatelessSession with sequential mode since I am inserting facts as part of the rules. If I also understand correctly, I'd like the Rete graph to be tall, rather than wide. Some ideas I have thought of include the following: 1. Creating a separate intermediary meta-model to split up the sizes of the rules. e.g. instead of (if A and B and C then insert D), using (if A and B then insert E; if E and C then insert D). 2. Moving eval() statements directly into the Type(...) selectors. 3. Removing eval() statements. Would this allow for better indexing by the Rete algorithm? 4. Reducing the height, or the width, of the class hierarchy of the facts. e.g. Removing interfaces or abstract classes to reduce the possible matches. Would this make a difference? 5. Conversely, increasing the height, or the width, of the class hierarchy. e.g. Adding interfaces or abstract classes to reduce field accessors. 6. Instead of using EObject.eContainer, creating an explicit containment property in all of my EObjects. 7. Creating a DSL that is human-readable, but allows for the automation of some of these approaches. 8. Moving all rules into one rule file, or splitting up rules into smaller files. Is there kind of profiler for Drools that will let me see the size (or the memory usage) of particular rules, or of the memory used after inference? Ideally I'd use this to profile any changes. Thanks for any thoughts or tips! :-) Jevon ___ 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] Help: Web based console for editing BPMN2 in 5.1M2 or SNAPSHOT
There is an additional WAR for oryx that must be installed first, kris should be able to provide more details on that. Mark On 05/07/2010 07:17, Low Han Ming NCS wrote: Hi, I saw on the blog post that there will be a browser base tool to edit BPMN2 processes in Guvnor 5.1. _http://blog.athico.com/2010/06/browser-based-bpmn2-authoring-in-drools.html_ I have downloaded the 5.1M2 and also the last successful build from _http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/_ http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/ After I've added a sample.bpmn file to the repository through Eclipse, it shows an error that the requested resource /designer/editor is not available when I try to open it in guvnor. I suppose this means that the BPMN editor which is suppose to be an Oryx based editor is a webapp with a context /designer? Can anyone advise how do I go about getting the designer webapp or build from the source? I have tried to download the src from drools-5.1.0.SNAPSHOT-src.zip and build the drools-guvnor module, but it didn't seems to have the editor loaded either. Attached is a screenshot of my gunvor. Thanks for any advise. Han Ming ___ 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] Arden Syntax support in Drools / Guvnor?
On 02/07/2010 07:37, HarrySimons wrote: Hi, Wanted to know whether or not the Drools/Guvnor combo supports the Arden Syntax for knowledge coding... used in Medical Logic Modules (or, MLMs) and clinical decision support systems such as EGADSS. If no, then are there any external tools / utilities that would allow importing of Arden Syntax into Drools / Guvnor? There is nothing for this at the moment, sounds like a good sub project if you have time? :) Mark Many thanks in advance, /HS ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Getting fix for JBRULES-2375
On 02/07/2010 02:51, Norman C wrote: Hi All, I'm working with Drools Fusion and have run into the deadlock issue in https://jira.jboss.org/browse/JBRULES-2375 (Drools hangs when events are retracted). This bug indicates it is fixed in 5.1.0.CR1. How can I get this fix, or alternatively, where in the SVN repository can I look at the code fix so I can create a custom version of 5.0.1 with this fix? Thanks in advance for your help. On the jira click the source tab and you'll see the changes assocated for that fix. Mark Norman ___ 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] jBPM and Drools Flow
Drools Flow will be incorporated into jBPM5. Mark On 18/06/2010 18:47, Jinsong wrote: I am interested in the question as well. Anybody can give us a answer? Best, Jinsong On Wed, Jun 16, 2010 at 3:01 AM, Hitoshi Ozawa htshoz...@gmail.com mailto:htshoz...@gmail.com wrote: Hi, With changes in jBPM team and a new announcement on jBPM 5 being more compatible with Drools Flow, would appreciate if someone can tell me the current stance on Drools Flow. Will the two join or remain separate. H.Ozawa ___ 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
Re: [rules-users] jBPM and Drools Flow
On 18/06/2010 22:38, Hitoshi Ozawa wrote: Will Drool Flow's API change? Should I wait until jBPM5 comes out to actually begin using it? I heard that jBPM5 will be a little bit of a wait. The namespace will change. The API may go under some minimal changes, but it'll be very close to what we have now. We will continue to push the unified knowledge api concept. Mark H.Ozawa 2010/6/19 Mark Proctormproc...@codehaus.org: Drools Flow will be incorporated into jBPM5. Mark On 18/06/2010 18:47, Jinsong wrote: I am interested in the question as well. Anybody can give us a answer? Best, Jinsong On Wed, Jun 16, 2010 at 3:01 AM, Hitoshi Ozawahtshoz...@gmail.com wrote: Hi, With changes in jBPM team and a new announcement on jBPM 5 being more compatible with Drools Flow, would appreciate if someone can tell me the current stance on Drools Flow. Will the two join or remain separate. H.Ozawa ___ 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 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Fwd: [drools-user] Write Drools Books - Packt Publishing.
Original Message Kshipra Singh kship...@packtpub.com Hello Everybody, I represent Packt Publishing, the publishers of computer related books. We are planning to expand our range of Drools books and are currently inviting Drools experts interested in writing books for Packt. We do not expect our authors to have any past writing experience. All that you need to write for Packt is an expert knowledge of your subject, a passion to share it with others and an ability to communicate clearly in English. So, if you love Drools and fancy writing a book, here's an opportunity for you! Send us your book ideas at aut...@packtpub.com. Even if you don't have a book idea and are simply interested in writing a book, we are keen to hear from you! More details about this opportunity are available at : http://authors.packtpub.com/content/packt-invites-drools-book-ideas-authors Thanks Kshipra Singh Author Relationship Manager Packt Publishing www.PacktPub.com http://www.PacktPub.com Skype: kshiprasingh15 Twitter: http://twitter.com/packtauthors Interested in becoming an author? Visit http://authors.packtpub.com for all the information you need about writing for Packt. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Boolean logic fail?
'or' is a conditional element to be used between patterns. '||' is an infix operator to be used in field constraints inside of patterns. Mark On 05/06/2010 00:23, Matthew Runo wrote: Hello folks - We noticed something weird today, and was hopeing that someone here might be able to explain it for us a bit.. Here's the rule we had: eval( -1 0 or 8 1 or 182 0 or 0 == 0); This was failing, but doesn't it seem like it should work? To get it to work, we tried this: eval( (-1 0) or (8 1) or (182 0) or (0 == 0)); ... but that didn't compile. We then tried this (and it worked!): eval( (-1 0) || (8 1) || (182 0) || (0 == 0)); So, my question is simply - why? What's the difference between or and || - and when should we use them? Thanks for your time! Matthew Runo Software Engineer, Zappos.com mr...@zappos.com - 702-943-7833 ___ 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] Using pipelines
On 03/06/2010 11:05, Swindells, Thomas wrote: I tried looking for one but couldn't see one in the PipelineFactory that can be used when I've received an object from the jms queue. I'm hoping that I'm just being blind or something... I'd not use that, stick with the CommandFactory and send a batch of commands, and just use the CommandExecutor stage in the pipeline for this. All of the pipeline stuff will go, with a Camel pushed as the default way to execute commands. Mark *From:* rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] *On Behalf Of *Mark Proctor *Sent:* 03 June 2010 07:28 *To:* rules-users@lists.jboss.org *Subject:* Re: [rules-users] Using pipelines On 02/06/2010 11:15, Swindells, Thomas wrote: I'm not trying to fire a particular rule, I'm trying to get the pattern matching inside the knowledge session to actually run, eg the equivalent of calling ksession.fireAllRules() but having the pipeline doing it at the correct time. Did you add the FireAllRulesCommand? Mark Thomas *From:* rules-users-boun...@lists.jboss.org mailto:rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] *On Behalf Of *rudolf michael *Sent:* 02 June 2010 10:39 *To:* Rules Users List *Subject:* Re: [rules-users] Using pipelines you can't explicitly fire a rule...it is not like calling a method. rules are fired when there is a pattern matches inside your KnowledgeSession. 2010/6/2 Swindells, Thomas tswinde...@nds.com mailto:tswinde...@nds.com I've still not managed to work this out, How do I actually get my rules to fire when using a pipeline? Thanks, Thomas *From:* rules-users-boun...@lists.jboss.org mailto:rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org mailto:rules-users-boun...@lists.jboss.org] *On Behalf Of *Swindells, Thomas *Sent:* 30 May 2010 18:47 *To:* Rules Users List *Subject:* [rules-users] Using pipelines I've been trying to learn how to use pipelines to execute some rules. I've had a look at the JaxbSimpleJmsMessengerTest as that seemed a good place to start and copy the code from (using drools 5.0.1). However running the test doesn't seem to actually run any of the rules -- I've tried adding println's but they don't appear, nor do the globals appear to get populated. What am I missing? Thomas ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com mailto:postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com mailto:postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** ___ rules-users mailing list rules-users@lists.jboss.org mailto:rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com mailto:postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United
Re: [rules-users] How can I use retract in action or exception handler?
On 02/06/2010 23:08, EugeneP wrote: Good afternoon How can I use retract in action or exception handler? For example, 0. I have a flow diagram; 1. in some node the fact Person( age == 10) is added to the working memory by 'insert'; 2. after some steps, the split node pass the control to the action-node 3. and in this action I need to retract this fact. How?! The action MVEL code like: $t : Person( age==10) retract($t) That would not be any valid MVEL or Java; you have mixed a rule LHS nd a rule RHS - neither of which are valid for an action. Firstly you'll need access to the facthandle, so you'll need to store that as a variable some how. Then you can do kcontext.knowledgeRuntime.retract( factHandle ); - does not work b/c of knowledge base errors: Could not parse knowledge... Unable to build expression for action... java.lang.Class cannot be cast to org.mvel2.util.MethodStub : org.drools.lang.descr.processde...@fa54fe Thanks, Eugene P ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Introspect Rules When condition
On 29/05/2010 01:13, Kinjal Khandhar wrote: Hello All, I am working on Drools Rules and need help on the below problem: In my .drl file say: *rule* *when* *Object1(..)* *Object2(..)* *then* * * *end;* Is there a way(Drools API or any method) in which I can scan through my rules files and get the objects...say Object1 and Object2. In a way I want to introspect the *when condition* objects. If anyone has any idea,please let me know. You can, but you'll need to use the internal api. Just get a reference to the rule LHS and iterate down the tree structure, you'll need to get a reference the internal Rule object, just mess around int the eclipse variable viewer and you should start to get a hang of things. Mark Thanks, Kinjal ___ 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] Drools Roadmap - Planned Release 5.1 release date
On 04/03/2010 09:21, Swindells, Thomas wrote: From what Mark Proctor posted in another thread: Edson has just merged the Rete algorithm updates into trunk, we have one remaining issue with planner and after that we 5.1M2. If thins go well we should 5.1 final this month. M2 is on the download page, just working on the release notes. Mark -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of Rohit Rai Sent: 04 March 2010 05:39 To: rules-users@lists.jboss.org Subject: Re: [rules-users] Drools Roadmap - Planned Release 5.1 release date Bump! Bump! Any updates on 5.1M2? -- View this message in context: http://n3.nabble.com/Drools-Roadmap-Planned- Release-5-1-release-date-tp60252p427859.html 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 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. An NDS Group Limited company. www.nds.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] Drools memory usage issue
On 02/03/2010 14:50, Shah, Malay wrote: Pavel, I don't want to profile my application, as I am sure that there is no memory leak happening either on the drools side or in my code, and I know that memory for the app is not enough. I am running my app on 10G memory with 75000 objects/facts (taking about 600 MB heap), and running about 75 complex rules across these facts. One solution is to increase the heap, but is there anything else that I can do (other than adding drools properties as mentioned in my earlier email). Also, is it possible to know how much time each rule took to execute on a set of facts, when we apply a bunch of rules together in a stateless session? This would help me debug such issues easily when new rules are added to my application. Have you had any progress here? There is no out of the box way to get the information you need. mark Thanks Malay Shah -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Pavel Tavoda Sent: Tuesday, March 02, 2010 3:26 AM To: Rules Users List Subject: Re: [rules-users] Drools memory usage issue At first start with tuning JVM. Xms, Xmx parameters. How much physical memory you have? If above 3.xx GB you need 64 bit JVM. If this is not enough just kick Profiler. Pavel 2010/3/2 Shah, Malaymalay.s...@morganstanley.com: Hi, We have an drools 5.0.1 application that uses StatelessSession and high volume of objects (facts) that we need to apply static rules on, and having out of memory issues doing so. We added the following three properties as given in the drools documentation for decreasing the memory usage: drools.shadowproxy=false drools.maintainTms=false drools.sequential=true As per the following blog, there is an algorithm to minimize the engine work, and memory usage. http://blog.athico.com/2007/07/sequential-rete.html Are the properties above sufficient to trigger this algorithm, or do we need to do write extra code for this? Also, does the drools.sequential property make sure that rules are applied sequentially on facts? If so, is there a hook into the drools engine to figure out which particular rule is consuming more memory or having more execution time? Thanks in advance. Malay Shah NOTICE: If received in error, please destroy, and notify sender. Sender does not intend to waive confidentiality or privilege. Use of this email is prohibited when received in error. We may monitor and store emails to the extent permitted by applicable law. ___ 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 -- NOTICE: If received in error, please destroy, and notify sender. Sender does not intend to waive confidentiality or privilege. Use of this email is prohibited when received in error. We may monitor and store emails to the extent permitted by applicable law. ___ 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] Moving from Jrules to Drools a couple of Issues
On 26/05/2010 09:56, paulnnosh wrote: Hi Chaps, We currently use Jrules 5 and are looking at our options going forward. We are going to evaluate Drools alongside some other products. So far I like the look of Drools but there are a couple of things that are puzzling me... - In our Jrules implementation our BOM/XOM exposes some of our application logic so that our rules can access application code and services to make decisions and updates where necessary. I can't see how this is possible in Drools. Pojos just work out of the box, it's much simpler :) So any inserted object is a pojo and is a direct reference to the object the user inserted. Use globals (also simple pojos) for registering and accessing services. - Our ruleflows use decision tables to define which rules will run dependant upon the transaction type received. This makes assigning a rule to a single ruleflow group inappropriate as one rule could be used by many different transactions. Is it possible to create an ArrayList of rules and execute them one at a time via ruleflow action node? JRules ruleflow and Drools ruleflow are very different. In JRules each ruleflow group is a separate knowledge base and executes statelessly. Where as RuleFlow in drools is for a single knowledge base and stateful sessions. You can simulate the more traditional ilog way by using Drools Flow, and create a work item to execute some input vars against a stateless session. This way each branch can have it's own knowledge base and copy of relevant rules. Mark Many Thanks ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor meant for business users?
I'd start with Decision Tables, these are the most natural metaphore for business users. You can use excel for Decision Tables, there is also the web based one but it is more limited. Mark On 20/05/2010 20:12, nxg912 wrote: Thanks for your message. Regarding the scenario, we were able to build the POJO model and other required dependencies but are not able to figure out that while working with Guided Editor, how to get access to internal properties of these objects, i.e. how to include those in the WHEN and THEN sections. Also, around Guvnor, our intention is to make this usable for business analyst and subject matter experts, i.e. they should be able to configure the rules and test them as well. Our understanding is that Guvnor and DSL are the options. At this point, to us, DSL seems like a better option than Guvnor from business analyst perspective. We are currently unable to build even slightly complex scenario and their corresponding test scenarios in Guvnor. So we were wondering if others in this forum are also reverting to DSL in case they want to get BA involved. Our impression on DRL has been very good as that allows you to build complex rules relatively quickly. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] org.drools.reteoo.AlphaNode$AlphaMemory cannot be cast to org.drools.reteoo.BetaMemory
On 20/05/2010 17:09, Axelrod, Nelson wrote: Can anyone explain what this ConsequenceException means? Exception in thread main _org.drools.runtime.rule.ConsequenceException_: _java.lang.ClassCastException_: org.drools.reteoo.AlphaNode$AlphaMemory cannot be cast to org.drools.reteoo.BetaMemory at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(_DefaultConsequenceExceptionHandler.java:23_) at org.drools.common.DefaultAgenda.fireActivation(_DefaultAgenda.java:943_) at org.drools.common.DefaultAgenda.fireNextItem(_DefaultAgenda.java:885_) at org.drools.common.DefaultAgenda.fireAllRules(_DefaultAgenda.java:1086_) at org.drools.common.AbstractWorkingMemory.fireAllRules(_AbstractWorkingMemory.java:660_) at org.drools.common.AbstractWorkingMemory.fireAllRules(_AbstractWorkingMemory.java:627_) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(_StatefulKnowledgeSessionImpl.java:183_) at org.jcvi.annotation.rulesengine.RulesEngine.fireAllRules(_RulesEngine.java:210_) at org.jcvi.annotation.Aruba.run(_Aruba.java:311_) at org.jcvi.annotation.RunTest.main(_RunTest.java:55_) Nelson Should be fixed in 5.1 M2: http://www.jboss.org/drools/downloads.html Mark ___ 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] 5.1M2 Issue: LeftTupleSinkUpdateAdapter onlys supports assertLeftTuple
On 13/05/2010 19:53, malkhafaji wrote: I will do that. I am just swamped right now with our production deployment and fixing all the issues I am having. Still b0rked? did you try M2 yet? http://www.jboss.org/drools/downloads.html Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools Roadmap - Planned Release 5.1 release date
On 27/05/2010 10:29, PAYET, Manuel wrote: That's great great news! Do you know when the maven repository will have the 5.1.0.M2 version available? Thanks a lot drools developers guy, you make awesome work. Toni said it was uploading when he went to bed, so I assume it's there already. Mark -Message d'origine- De : rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] De la part de Mark Proctor Envoyé : jeudi 27 mai 2010 11:22 À : rules-users@lists.jboss.org Objet : Re: [rules-users] Drools Roadmap - Planned Release 5.1 release date On 04/03/2010 09:21, Swindells, Thomas wrote: From what Mark Proctor posted in another thread: Edson has just merged the Rete algorithm updates into trunk, we have one remaining issue with planner and after that we 5.1M2. If thins go well we should 5.1 final this month. M2 is on the download page, just working on the release notes. Mark -Original Message- From: rules-users-boun...@lists.jboss.org [mailto:rules-users- boun...@lists.jboss.org] On Behalf Of Rohit Rai Sent: 04 March 2010 05:39 To: rules-users@lists.jboss.org Subject: Re: [rules-users] Drools Roadmap - Planned Release 5.1 release date Bump! Bump! Any updates on 5.1M2? -- View this message in context: http://n3.nabble.com/Drools-Roadmap-Planned- Release-5-1-release-date-tp60252p427859.html 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 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 ** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmas...@nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. An NDS Group Limited company. www.nds.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 This message contains information that may be privileged or confidential and is the property of the Capgemini Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message. ___ 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
