May 2010 - rules-dev - Jboss List Archives

Semantic Web Drools Module, Request for Feedbak

by Xavier Breton

Hi, I'm looking for feedback, I'll develop a Semantic Web Drools Module that will be the subject of my Master Degree Tesis. The idea is to use Eclipse Modelling Framework (EMF) for prototyping and follow a Model Driven Architecture (MDA) where the source language is Semantic of Business Vocabularies and Business Rules (SBVR) and the target language is Drools DRL. The mapping could be (PIM level): - Semantic Web Rule Language (SWRL) - Ontology Web Language (OWL) - RuleML - Rule Interchange Format (RIF) - REWERSE Rule Markup Language (R2ML) It could be added to the module at the source UML or Entity Relationship like models to transform the models into SBVR. Regards Xavier Breton

10 years, 10 months

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Guided Editor in BRMS / Guvnor Version 5 (Snapshot of 26 June)

by Paul Browne

Folks, For various reasons I'm trying out the Guided Editor for Business Rules in the Guvnor Version 5 (Snapshot of 26 June from Hudson, deployed on JBoss App Server 4.2.2GA). I've created the Package / Category and uploaded a simple fact model (as works in BRMS version 4). I create a new business rule using the guided editor and the screen shows successfully with both 'When' and 'Then' parts.Assume the next question is due to me missing something, but wanted to double check: When I press the green '+' to the right of the screen I am shown the message / dialog layer saying ' *Add a condition to the rule... *or* Add an action to the rule. *Problem is that there doesn't appear to be a way of adding a condition or action. The only thing I'm seeing in the logs is * (Contexts.java:flushAndDestroyContexts:335) could not discover transaction status *Am I missing something or should I come back to Guvnor later in the development Cycle? Thanks Paul

12 years, 9 months

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Drools on android

by Justin King

Hi All, I'm wondering if anyone has tried to use drools in a google android application, and if so what problems did you have? I'd also be interested to know if its even possible! Thanks! -- Regards, Justin King PhD Candidate Faculty of Information and Communication Technologies Swinburne University of Technology http://www.ict.swin.edu.au/ictstaff/justinking -- Regards, Justin King PhD Candidate Faculty of Information and Communication Technologies Swinburne University of Technology http://www.ict.swin.edu.au/ictstaff/justinking

12 years, 12 months

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Drools-Guvnor on Oracle AS (OC4J) 10.1.3

by mamadou.ensi

Hi, I finally certified Guvnor on different Application Server (Jboss, Tomcat, OC4J, Weblogic 11g) for Jboss and Tomcat their is tutorials but for OC4J and Weblogic I did'nt find tutorials. Lets Start: 1/ download oc4j (I use oc4j_extended_101350) 2/ extract the rar file 3/ Open the file data-source.xml %OC4J_HOME%/J2EE/home/config 4/ add the following lines <managed-data-source name="guvnor" connection-pool-name="drools-guvnor" jndi-name="jdbc/OracleDS" /> <connection-pool name='drools-guvnor' num-cached-statements='32'> <connection-factory factory-class='org.hsqldb.jdbcDriver' user='sa' password='' url="jdbc:hsqldb:."> </connection-factory> </connection-pool> 5/ the following JARs are required - hsqldb.jar - hibernate-annotations.jar - hibernate-entitymanager.jar - hibernate3.jar - jboss-common.jar - dom4j.jar - commons-logging.jar - log4j.jar - commons-collections.jar - cglib.jar - jsf-api.jar - jsf-impl.jar start the server (the first start the server will need a password for manager) 6/ open the URL: http://localhost:8888/em 7/authentificate with your password http://n3.nabble.com/file/n828422/image1.png 8/ go to application tab http://n3.nabble.com/file/n828422/image2.png 9/ click on deploy and browse to the war file location http://n3.nabble.com/file/n828422/image3.png 10/ click Next and give drools-guvnor as a name http://n3.nabble.com/file/n828422/image4.png 11/ click Next 12/ Finally click Deploy Verify that Guvnor is running well: http://localhost:8888/drools-guvnor http://localhost:8888/drools-guvnor I hope it's clear For any questions, contact me -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Guvnor-on-Orac... Sent from the Drools - Dev mailing list archive at Nabble.com.

13 years, 3 months

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unknown error while parsing

by Boschung Daniel

hi folks drools prompt me to contact the development team. the following error apears, whithout stacktrace, while developing a rule. maybe the error is known to you?! thanks for a little statement daniel

14 years, 2 months

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Dropping Maven for Gradle?

by tolitius

Just wondering if any of the devs considered to use something a bit more efficient for the whole Drools Suite build. Maven is really painful, especially for huge source bases with cross dependencies like drools... Ivy? Gradle? Buildr? /Anatoly -- View this message in context: http://n3.nabble.com/Dropping-Maven-for-Gradle-tp727052p727052.html Sent from the Drools - Dev mailing list archive at Nabble.com.

14 years, 5 months

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guvnor - adding own operators in conditions for eligibility rules

by data data

I like to add or change the existing operators in the condition part for eligibility rules. - equal to - not equal to - matches - sounds like For instance I like to distinguish between reference compare "==" and deep comparison with "object.equals()". Any ideas how I can achieve that? Any hints where I can have a look in order to start with that? (links, class names etc.) Thank you in advance regards Mark

14 years, 7 months

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KnowledgeAgent on Drools 5.1

by Mohamed BEN AYED

Hi, I am working wih knowledgeAgent and I migrate to 5.1 version when I use DRL file, it works fine but when I use PKG file I have an exception: java.lang.RuntimeException: KnowledgeAgent exception while trying to deserialize KnowledgeDefinitionsPackage at org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:586) at org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:541) at org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:731) at org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:515) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:145) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:130) at com.cylande.MainKAgent.main(MainKAgent.java:171) Caused by: java.io.InvalidClassException: org.drools.rule.DialectRuntimeRegistry; local class incompatible: stream classdesc serialVersionUID = 5308493362083281112, local class serialVersionUID = 2297533903900118816 at java.io.ObjectStreamClass.initNonProxy(Unknown Source) at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) at java.io.ObjectInputStream.readClassDesc(Unknown Source) at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) at java.io.ObjectInputStream.readObject0(Unknown Source) at java.io.ObjectInputStream.readObject(Unknown Source) at org.drools.rule.Package.readExternal(Package.java:198) at java.io.ObjectInputStream.readExternalData(Unknown Source) at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) at java.io.ObjectInputStream.readObject0(Unknown Source) at java.io.ObjectInputStream.readObject(Unknown Source) at org.drools.core.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:189) at org.drools.core.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:158) at org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:575) ... 6 more could you please explain this? I am using Drools 5.1 SNAPSHOT. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/KnowledgeAgent-on-Dro... Sent from the Drools - Dev mailing list archive at Nabble.com.

14 years, 7 months

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DRL comilation: Parsing null does not work where parsing an enum literal does works.

by Geoffrey De Smet

This works in DRL: Assignment( (PatternEntryPropertyWildcard.ANY == $shiftTypeWildcard) || (shiftType == $shiftType) ... ) But this doesn't work in DRL: Assignment( (null == $shiftType) || (shiftType == $shiftType) ... ) It says "no viable alternative at input 'null' in rule" Is there a specific reason why enum literals work on that spot and the null literal doesn't? Here's the full stacktrace: Exception in thread "main" java.lang.IllegalStateException: There are errors in the scoreDrl's:[536,8]: [ERR 101] Line 536:8 no viable alternative at input ')' in rule "unwantedPatternShiftType2DaysPattern" in pattern ShiftType2DaysPattern[542,13]: [ERR 101] Line 542:13 no viable alternative at input 'null' in rule "unwantedPatternShiftType2DaysPattern" in pattern Assignment[544,12]: [ERR 102] Line 544:12 mismatched input '$employee' expecting ')' in rule "unwantedPatternShiftType2DaysPattern" in pattern Assignment[544,32]: [ERR 102] Line 544:32 mismatched input ',' expecting '(' in rule "unwantedPatternShiftType2DaysPattern" in pattern employee[545,8]: [ERR 102] Line 545:8 mismatched input ')' expecting '(' in rule "unwantedPatternShiftType2DaysPattern" in pattern employee in pattern shiftDateDayIndex[547,13]: [ERR 101] Line 547:13 no viable alternative at input 'null' in rule "unwantedPatternShiftType2DaysPattern" in pattern employee in pattern Assignment -- With kind regards, Geoffrey De Smet

14 years, 7 months

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Guvnor on trunk does not work anymore.

by Jervis Liu

Hi, The drools-guvnor.war built from drools trunk does not work anymore. I have tried JBoss 4.3 and JBOSS 5.1, neither work. There is no error message or exception in log, the browser just say "The requested resource (/drools-guvnor) is not available". Does anymore know whats going on there? I am looking into this right now, but if you know what may cause the problem, please also help. I am pretty sure it was working two weeks ago. BTW, it still works in Eclipse. Cheers, Jervis

14 years, 7 months

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rules-dev May 2010