June 2010 - rules-dev - Jboss List Archives

by jillika iyer

hi, I am creating dsl files using jboss-brms and importing them to my eclipse and adding them to the knowledge agent. Now ideally we need to change a dsl or a brl file to a dslr file inorder for it to be processed by the knowledgebase. So when we use the knowledge agent how does it parse the data and create these files??? Please help me out. I just am trying to add everythin directly to my knowledge base and its not working! Thank you Jill

16 years, 2 months

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Dynamic Loading of Rules from BRMS

by jillika iyer

hi guys, I am trying to upload my rules from jboss-brms to my eclipse in order to run it against the working memory. The following is my code and change-set.xml file and I am getting the following error stack. I have started the jboss-server and it is connected correctly. But I am not able to figure out the error I am getting and is my change-set and code proper? The error says that it is unable to parse change-set.xml and unable to connect to the server. I have just specified the url path in my change-set file and the types of files it should be looking out for. What else do I need to incorporate for it to connect to the server??? I could not find much help in the documentation. Please help me. I am relatively new to Drools. Code in my Runner class: KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); ResourceFactory.getResourceChangeScannerService().start(); ResourceFactory.getResourceChangeNotifierService().start(); // creating a knowledge agent KnowledgeAgentConfiguration aconf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration(); KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent( "MyAgent", kbase,aconf ); kagent.applyChangeSet( ResourceFactory.newUrlResource(" http://localhost:8280/jboss-brms/org.drools.guvnor.Guvnor/Guvnor.html")); StatefulKnowledgeSession ksession = kagent.getKnowledgeBase().newStatefulKnowledgeSession(); // StatelessSession workingMemory = ruleBase.newStatelessSession(); ArrayList<Ip> ipList = new ArrayList<Ip>(); ksession.setGlobal("ipList", ipList); ksession.insert(al); ksession.fireAllRules(); ksession.dispose(); my change-set.xml file: <change-set xmlns='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.xsd' > <add>  <resource source='http://localhost:8280/jboss-brms' type='DRL' /> <resource source='http://localhost:8280/jboss-brms' type='DSLR' /> <resource source='http://localhost:8280/jboss-brmss/sample-dsl.dsl' type='DSL' />"; <resource source='http://localhost:8280/jboss-brms' type='BRL' /> </add> </change-set> error stack: java.lang.RuntimeException: Unable to parse ChangeSet at org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:223) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:109) at com.org.RuleRunner.runStatelessRules(RuleRunner.java:156) at com.org.RulesTest.main(RulesTest.java:38) Caused by: java.net.SocketException: Network is unreachable: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.Socket.connect(Socket.java:524) at java.net.Socket.connect(Socket.java:474) at sun.net.NetworkClient.doConnect(NetworkClient.java:157) at sun.net.www.http.HttpClient.openServer(HttpClient.java:388) at sun.net.www.http.HttpClient.openServer(HttpClient.java:523) at sun.net.www.http.HttpClient.<init>(HttpClient.java:231) at sun.net.www.http.HttpClient.New(HttpClient.java:304) at sun.net.www.http.HttpClient.New(HttpClient.java:321) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:839) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:791) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:716) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:960) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:973) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:905) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:872) at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:282) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(XMLDocumentScannerImpl.java:1021) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242) at javax.xml.parsers.SAXParser.parse(SAXParser.java:375) at org.drools.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:255) at org.drools.xml.ExtensibleXmlParser.read(ExtensibleXmlParser.java:170) at org.drools.xml.XmlChangeSetReader.read(XmlChangeSetReader.java:48) at org.drools.agent.impl.KnowledgeAgentImpl.getChangeSet(KnowledgeAgentImpl.java:221) ... 3 more Please help me. Thank you Jill

16 years, 2 months

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Japanese Drools example

by Hitoshi Ozawa

Hi, The company I work for put me on a hold while some paper works were being done. That said, I have a Japanese version of Drools examples and will be working on I18N/ L10N Drools IDE. The examples aren't I18N so strings are directly written in Japanese. Will drools team be interested in having it? or should I just upload it to my site (the one below with all the other software). While waiting, decided to port some other software: :-) http://sourceforge.jp/projects/oss-ja-jpn/releases/ Cheers, H.Ozawa

16 years, 2 months

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Re: [rules-dev] Exception in runtime

by Greg Barton

In defence of the java library designers, at the time when the ConcurrentModificationException was introduced (java 1.2) the java.util.concurrent package was three versions away from existence. :) GreG On Jun 22, 2010, at 6:11 PM, Michael Neale <michael.neale(a)gmail.com> wrote: FYI - ConcurrentModificationException is the most misleading exception name ever !!! - it never really means what you think it means - it means you were modifying some collection while dealing with its iterator or similar - doesn't even need to be more than one thread. How annoying ! So mentally, replace ConcurrentModificationException with "ModifyingACollectionWhileIteratingException" ! Or else, like me, waste years of your life fretting about threading issues only to realise that isn't the problem (and its usually something far simpler). On Tue, Jun 22, 2010 at 11:25 PM, Mauricio Salatino <salaboy(a)gmail.com> wrote: Are you inserting facts from different threads in a statefull session? On Tue, Jun 22, 2010 at 10:21 AM, <Tom.E.Murphy(a)wellsfargo.com> wrote: Anybody have any ideas on this? We are seeing ConcurrentModificationException while inserting objects into working memory. This happens occasionally, either at service start-up, where the first transaction is being submitted and the rules are loading for the first time, or sometimes under heavy loads with lots of transactions being processed by the service: Drools 5.0.1-GA AS: Web Logic JVM: 1.5 Fragment of stack trace: Caused by: java.util.ConcurrentModificationException java.util.HashMap$HashIterator.nextEntry(HashMap.java:2117) java.util.HashMap$ValueIterator.next(HashMap.java:2147) org.drools.reteoo.EntryPointNode.updateSink(EntryPointNode.java:285) org.drools.reteoo.ObjectTypeNode.attach(ObjectTypeNode.java:279) org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:234) org.drools.reteoo.ClassObjectTypeConf.<init>(ClassObjectTypeConf.java:93) org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58) org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:849) org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788) org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:216) com.wellsfargo.ARGenT.Execution.DefaultLoader.Load(DefaultLoader.java:16) Tom Murphy Business Process Consultant Wells Fargo HCFG - CORE Deal Decisioning Platform 800 S. Jordan Creek Parkway | West Des Moines, IA 50266 MAC: X2301-01B Office: 515 324 4853 | Mobile: 515 423 4334 tom.e.murphy(a)wellsfargo.com This transmission may contain information that is confidential and/or proprietary. If you are not the individual or entity to which it is addressed, note that any review, disclosure, copying, retransmission, or other use is strictly prohibited. If you received this transmission in error, please notify the sender immediately and delete the material from your system. _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev -- Michael D Neale home: www.michaelneale.net blog: michaelneale.blogspot.com _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev

16 years, 2 months

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Exception in runtime

by Tom.E.Murphy＠wellsfargo.com

Anybody have any ideas on this? We are seeing ConcurrentModificationException while inserting objects into working memory. This happens occasionally, either at service start-up, where the first transaction is being submitted and the rules are loading for the first time, or sometimes under heavy loads with lots of transactions being processed by the service: Drools 5.0.1-GA AS: Web Logic JVM: 1.5 Fragment of stack trace: Caused by: java.util.ConcurrentModificationException java.util.HashMap$HashIterator.nextEntry(HashMap.java:2117) java.util.HashMap$ValueIterator.next(HashMap.java:2147) org.drools.reteoo.EntryPointNode.updateSink(EntryPointNode.java:285) org.drools.reteoo.ObjectTypeNode.attach(ObjectTypeNode.java:279) org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:234) org.drools.reteoo.ClassObjectTypeConf.<init>(ClassObjectTypeConf.java:93) org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58) org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:849) org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788) org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:216) com.wellsfargo.ARGenT.Execution.DefaultLoader.Load(DefaultLoader.java:16) Tom Murphy Business Process Consultant Wells Fargo HCFG - CORE Deal Decisioning Platform 800 S. Jordan Creek Parkway | West Des Moines, IA 50266 MAC: X2301-01B Office: 515 324 4853 | Mobile: 515 423 4334 tom.e.murphy(a)wellsfargo.com This transmission may contain information that is confidential and/or proprietary. If you are not the individual or entity to which it is addressed, note that any review, disclosure, copying, retransmission, or other use is strictly prohibited. If you received this transmission in error, please notify the sender immediately and delete the material from your system.

16 years, 2 months

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documentation broken

by jschmied

Hi! Getting the documentation (drools-5.1.0.SNAPSHOT-docs.zip) from trunk I noticed all the paths to pictures are absolute. As example: file:///qa/hudson_ws/workspace/drools/trunk/drools-docs/drools-docs-expert/src/main/docbook/en-US/Chapter-Language_Reference//qa/hudson_ws/workspace/drools/trunk/drools-docs/drools-docs-expert/src/main/docbook/images/Chapter-Rule_Language/lhs.png instead of a short relative path. There are no pictures visible. so long juergen -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/documentation-broken-... Sent from the Drools - Dev mailing list archive at Nabble.com.

16 years, 2 months

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Error building latest Drools from SVN

by Bill Hainaut

I'm trying to build the latest Drools Planner examples for SVN at: http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk I am running into this error: [INFO] Copying classes to C:\Users\bhainaut\Documents\Drools\jbossrules\osgi-bundles\plugins\classes [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error copying artifact from C:\Users\bhainaut\Documents\Drools\jbossrules\osgi-bundles\jxls\org.drools.osgi.wrapp er.jxls-reader\target\classes to C:\Users\bhainaut\Documents\Drools\jbossrules\osgi-bundles\plugins\classes Embedded error: C:\Users\bhainaut\Documents\Drools\jbossrules\osgi-bundles\jxls\org.drools.osgi.wrapper.jxls-reader\targ et\classes (Access is denied) Any clues on how this might be fixed would be greatly appreciated. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Error-building-latest... Sent from the Drools - Dev mailing list archive at Nabble.com.

16 years, 2 months

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Fwd: [drools-user] Write Drools Books - Packt Publishing.

by Mark Proctor

-------- Original Message --------Kshipra Singh <kshipras(a)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 author(a)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.

16 years, 2 months

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ClassCastException BTM - hibernate Configuring Persistence

by Puchu

Hi all! I need to configure my system to save the state of a StatefulKnowledgeSession. I'm using tomcat 6, BTM 1.3.2, Hibernate 3.4 and Postgres 8.3. I have configured my Tomcat 6 and my jee aplication as it is described in this post http://docs.codehaus.org/display/BTM/Tomcat13 So I have published a DataSource called testDS1. My persitence.xml file has the next configuration: --------------------------------------------------------------------------------------------- <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <persistence version="1.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_1_0.xsd" xmlns:orm="http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/persistence"> <persistence-unit name="com.logister.brms.jpa" transaction-type="JTA"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jta-data-source>java:comp/env/jdbc/testDS1</jta-data-source> <class>org.drools.persistence.session.SessionInfo</class> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" /> <property name="hibernate.hbm2ddl.auto" value="create-drop" /> <property name="hibernate.max_fetch_depth" value="3" /> <property name="hibernate.show_sql" value="true" /> <property name="hibernate.transaction.factory_class" value="org.hibernate.transaction.JTATransactionFactory" /> <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.BTMTransactionManagerLookup" /> </properties> </persistence-unit> </persistence> --------------------------------------------------------------------------------------------- And my code for creating the StatefulKnowledgeSession is the next below: (The same is shown in the Chapter 5 persitence in the web http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/tr... ). --------------------------------------------------------------------------------------------- KnowledgeBase kbase = null; StatefulKnowledgeSession ksession = null; kbase = util.readKnowledgeBase(); // This method reads all the rf (flow) files. EntityManagerFactory emf = Persistence.createEntityManagerFactory("com.logister.brms.jpa"); Environment env = KnowledgeBaseFactory.newEnvironment(); env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf); ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env); int sessionId = ksession.getId(); --------------------------------------------------------------------------------------------- My problem is that I get the next Error, but the table sessioninfo is automatically created. javax.persistence.PersistenceException: [PersistenceUnit: com.logister.brms.jpa] Unable to build EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Con figuration.java:677) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(Hib ernatePersistence.java:126) at javax.persistence.Persistence.createEntityManagerFactory(Persistence. java:52) at javax.persistence.Persistence.createEntityManagerFactory(Persistence. java:34) at com.logister.BRMS.BrmsServlet.doPost(BrmsServlet.java:124) at com.logister.BRMS.BrmsServlet.doGet(BrmsServlet.java:59) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav a:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcesso r.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.pr ocess(Http11AprProtocol.java:574) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:15 27) at java.lang.Thread.run(Thread.java:595) Caused by: org.hibernate.HibernateException: Could not obtain BTM transaction ma nager instance at org.hibernate.transaction.BTMTransactionManagerLookup.getTransactionM anager(BTMTransactionManagerLookup.java:50) at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java: 357) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.jav a:1327) at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(Annotat ionConfiguration.java:867) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Con figuration.java:669) ... 19 more Caused by: java.lang.ClassCastException: bitronix.tm.BitronixTransactionManager at org.hibernate.transaction.BTMTransactionManagerLookup.getTransactionM anager(BTMTransactionManagerLookup.java:47) ... 23 more Any idea? I have looked for a solution and I have tried differents configurations in my persistence.xml file but in fact I have always received a java.lang.ClassCastException. Thanks in advance. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/ClassCastException-BT... Sent from the Drools - Dev mailing list archive at Nabble.com.

16 years, 2 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

16 years, 3 months

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rules-dev June 2010