July 2010 - rules-users - Jboss List Archives

ParseException: MessageFormat parse error!

by mash

Hello, i am new to mailing list and i am also a new Drools User. I already searched in archive for this error. But found nothing. There (http://community.jboss.org/thread/152613) i just found the hint on mailing list here. Desperately there was no solution. Problem: I downloaded the Drools Example Project imported the maven project to Eclipse and try to run. It aborts with the ParseException. I didn't changed the location or the stocktickstream.dat itself. Do i have to configure something for the persister? Thx in advance! -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/ParseException-Messag... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 7 months

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Drools Flow - Human Task

by jawa

Hi, I am developing a drools flow application and at one point of the flow I want end user (User of my website) to reply to some questions one by one i.e. I'll show them a question on a web page and they'll answer it then next question etc. It has a flow sequence depending on the answers of questions. e.g. If user replied 'No' to Q1 then go to Q5 else go to Q2 etc. So I want my flow to stop for a user input when the flow reaches to the 'Ask question' stage. I have read the drools flow documentation and it looks like there is an option to use Human Task which will cause my flow to stop at that point and wait for user input but for that I'll have to use Apache Mina server and will need to claim tasks etc. But I don't want that because my front end application is in php and backend (Drools flow) is in java and I connect both using webservice. So I just want to ask my front end that ask question then front end will reply with an answer that I want to feed to my flow then flow will continue and decide which question to ask next. The website users are anonymous it can be anyone answering the questions. Can anyone please give me an idea how to achieve this using drools flow? Thank you -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Flow-Human-Tas... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 7 months

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Implementing Timers With Drools Persistence Enabled

by nanic23

Hi All, I was able to implement some timers and they behave as expected until I enable persistence. Timers work (get triggered) when creating the StatefulKnowledgeSession by kbase.newStatefulKnowledgeSession() but they do NOT work (do not get triggered) when creating the StatefulKnowledgeSession by JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env); I am calling ksession.fireUntilHalt() from within a new thread and all that. The problem is not getting timers to work, as I have already accomplished this, but the problem is rather getting them to work with persistence enabled. - Has anyone implemented timers while using (having enabled) persistence? - Did you experience any problems such as timers not triggering? - If so, have you found a work around you could share? The timers are being implemented in ruleflow (DRF) and I'm using drools 5.1.0 Any comments are welcome. Thanks, Nick. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Implementing-Timers-W... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 7 months

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DroolsFlow with foreach node stops execution of entire flow on empty collection

by vasilievip

Hello, Drools version 5.0.1 DroolsFlow with foreach node stops execution of entire flow on empty (not null but empty) collection. Please find attached test case: http://drools-java-rules-engine.46999.n3.nabble.com/file/n978149/test_for... test_foreach.zip Thanks -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/DroolsFlow-with-forea... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 7 months

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Drools Flow: Getting to the right Process from the re-loaded Session

by tolitius

StatefulKnowledgeSession ksession = JPAKnowledgeService.loadStatefulKnowledgeSession( sessionId, kbase, null, env ); Now, having a "ksession", how do I get to the right PROCESS_INSTANCE_ID, so I can ksession.getProcessInstance()? Thank you, /Anatoly -- View this message in context: http://n3.nabble.com/Drools-Flow-Getting-to-the-right-Process-from-the-re... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 7 months

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Drools Planner or Drools Solver

by Nick Heudecker

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

15 years, 7 months

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Still getting an EvalConditionNode ClassCastException

by Paul Ryan

We're still getting a class cast exception for beta and eval memory (exception below). It is a different location and the opposite direction of the exception cast from JBRULES-1719. The rule we ran was: /** * Load the smgl transform */ rule "Load Transform" when $fact : ParametersFact( doc != "dmodule", $xml : xml != null, noopResponse == true, eval(XPathUtil.selectElement($xml,"/*/transformLog//transform[name='s1000dv3']")==null), flags['loadedS1000Dv3']!=true, eval(XPathUtil.selectElement($xml,"/*/transformLog//transform[name='detect']/results[result='text/xml']")!=null) ) $importUtil : RuleImportUtil() $model : EditionsRulesJobRunner(stop==false,interrupt==false) then Vector<String> libraries = new Vector<String>(); libraries.add("lib"); String documentType = "dmodule"; String fragmentType = "dmodule"; $importUtil.importRules(kcontext,"transformCmd",documentType,fragmentType,libraries); $fact.getFlags().put("loadedS1000Dv3",true); end The thing of consequence here is the importRules call which modifies the kcontext and acts as a dynamic include (e.g. it imports new rules). The exception received is: INFO | 2010/07/19 17:07:29 | jvm 1 | 2010-07-19 17:07:29,743 INFO com.infotrustgroup.restless.server.ThreadedService:An exception was trapped in com.infotrustgroup.jobs.services.auth.EditionsRulesJobRunner INFO | 2010/07/19 17:07:29 | jvm 1 | org.drools.runtime.rule.ConsequenceException: java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.EvalConditionNode$EvalMemory INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:943) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:627) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:183) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.rules.engine.RulesManager.runRules(RulesManager.java:363) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleFileUtil.runRules(RuleFileUtil.java:385) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleFileUtil.runRules(RuleFileUtil.java:349) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleRunner.run(RuleRunner.java:395) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleRunner.call(RuleRunner.java:193) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.jobs.services.auth.EditionsRulesJobRunner.runRules(EditionsRulesJobRunner.java:87) INFO | 2010/07/19 17:07:29 | jvm 1 | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) INFO | 2010/07/19 17:07:29 | jvm 1 | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) INFO | 2010/07/19 17:07:29 | jvm 1 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) INFO | 2010/07/19 17:07:29 | jvm 1 | at java.lang.reflect.Method.invoke(Method.java:597) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.restless.server.ThreadedService.runServiceMethod(ThreadedService.java:845) INFO | 2010/07/19 17:07:29 | jvm 1 | Caused by: java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.EvalConditionNode$EvalMemory INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.EvalConditionNode.retractLeftTuple(EvalConditionNode.java:199) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:239) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:195) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1416) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1350) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.impl.StatefulKnowledgeSessionImpl.update(StatefulKnowledgeSessionImpl.java:231) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.rules.engine.RulesManager$InnerPropertyChangeListener.propertyChange(RulesManager.java:467) INFO | 2010/07/19 17:07:29 | jvm 1 | at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.collections.BoundMap.put(BoundMap.java:67) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.what.Rule_Load_ATAXML_Transform_0.consequence(Rule_Load_ATAXML_Transform_0.java:28) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.what.Rule_Load_ATAXML_Transform_0ConsequenceInvoker.evaluate(Rule_Load_ATAXML_Transform_0ConsequenceInvoker.java:28) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:934) INFO | 2010/07/19 17:07:29 | jvm 1 | ... 16 more INFO | 2010/07/19 17:07:29 | jvm 1 | org.drools.runtime.rule.ConsequenceException: java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.EvalConditionNode$EvalMemory INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:943) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:627) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:183) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.rules.engine.RulesManager.runRules(RulesManager.java:363) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleFileUtil.runRules(RuleFileUtil.java:385) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleFileUtil.runRules(RuleFileUtil.java:349) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleRunner.run(RuleRunner.java:395) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleRunner.call(RuleRunner.java:193) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.jobs.services.auth.EditionsRulesJobRunner.runRules(EditionsRulesJobRunner.java:87) INFO | 2010/07/19 17:07:29 | jvm 1 | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) INFO | 2010/07/19 17:07:29 | jvm 1 | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) INFO | 2010/07/19 17:07:29 | jvm 1 | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) INFO | 2010/07/19 17:07:29 | jvm 1 | at java.lang.reflect.Method.invoke(Method.java:597) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.restless.server.ThreadedService.runServiceMethod(ThreadedService.java:845) INFO | 2010/07/19 17:07:29 | jvm 1 | Caused by: java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.EvalConditionNode$EvalMemory INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.EvalConditionNode.retractLeftTuple(EvalConditionNode.java:199) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:239) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:195) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1416) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1350) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.impl.StatefulKnowledgeSessionImpl.update(StatefulKnowledgeSessionImpl.java:231) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.rules.engine.RulesManager$InnerPropertyChangeListener.propertyChange(RulesManager.java:467) INFO | 2010/07/19 17:07:29 | jvm 1 | at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.collections.BoundMap.put(BoundMap.java:67) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.what.Rule_Load_ATAXML_Transform_0.consequence(Rule_Load_ATAXML_Transform_0.java:28) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.what.Rule_Load_ATAXML_Transform_0ConsequenceInvoker.evaluate(Rule_Load_ATAXML_Transform_0ConsequenceInvoker.java:28) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:934) INFO | 2010/07/19 17:07:29 | jvm 1 | ... 16 more INFO | 2010/07/19 17:07:29 | jvm 1 | 2010-07-19 17:07:29,759 FATAL com.infotrustgroup.jobs.services.auth.EditionsRulesJobRunner:Worker service threw an unexpected exception. INFO | 2010/07/19 17:07:29 | jvm 1 | org.drools.runtime.rule.ConsequenceException: java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.EvalConditionNode$EvalMemory INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:943) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:627) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:183) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.rules.engine.RulesManager.runRules(RulesManager.java:363) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleFileUtil.runRules(RuleFileUtil.java:385) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleFileUtil.runRules(RuleFileUtil.java:349) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleRunner.run(RuleRunner.java:395) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.rules.RuleRunner.call(RuleRunner.java:193) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.jobs.services.auth.EditionsRulesJobRunner.runRules(EditionsRulesJobRunner.java:87) INFO | 2010/07/19 17:07:29 | jvm 1 | Caused by: java.lang.ClassCastException: org.drools.reteoo.BetaMemory cannot be cast to org.drools.reteoo.EvalConditionNode$EvalMemory INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.EvalConditionNode.retractLeftTuple(EvalConditionNode.java:199) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:239) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:195) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1416) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1350) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.impl.StatefulKnowledgeSessionImpl.update(StatefulKnowledgeSessionImpl.java:231) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.rules.engine.RulesManager$InnerPropertyChangeListener.propertyChange(RulesManager.java:467) INFO | 2010/07/19 17:07:29 | jvm 1 | at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.util.collections.BoundMap.put(BoundMap.java:67) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.what.Rule_Load_ATAXML_Transform_0.consequence(Rule_Load_ATAXML_Transform_0.java:28) INFO | 2010/07/19 17:07:29 | jvm 1 | at com.infotrustgroup.what.Rule_Load_ATAXML_Transform_0ConsequenceInvoker.evaluate(Rule_Load_ATAXML_Transform_0ConsequenceInvoker.java:28) INFO | 2010/07/19 17:07:29 | jvm 1 | at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:934) INFO | 2010/07/19 17:07:29 | jvm 1 | ... 11 more Point of speculation: When looking at the latest code on trunk I would believe this is not fixed as the line pointed to here has not changed (the place where this line exists has changed but not the code see fisheye at http://fisheye.jboss.org/browse/JBossRules/trunk/drools-core/src/main/jav... and where the lefthand side was 199 for 5.0.1 it is still the same code in the latest svn revision (now line 229). -- Paul Ryan

15 years, 7 months

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Drools 5.1.0CR1

by Juan Ignacio Barisich

Hello everyone. I'm working on a research about migration from OSWorklow to DroolsFlow. Among other things, I need spring integration support. As I know, this feature will be supported in the 5.1.0CR1 version of Drools. Do you know when this version will be released? On https://jira.jboss.org/browse/JBRULESthere isn't an expected date for this version. Thanks in advance. Juan Barisich

15 years, 7 months

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Storing and loading rules in database

by wilsonywx

I am trying to develop an application where users can specify rules at a front end and the rule engine would execute in the backend. The users will work with a pre-defined set of objects and actions they can take on the objects. I could use a BRMS such as Guvnor but I found the GUI lacking and not friendly enough for the non-technical end users I am supporting. I will instead write a front end for user input, which is stored in the DB, and the backend will pull data and generate a .drl file each time it's run. I have found an old article on loading rules in and out of a DB dynamically, at http://docs.codehaus.org/display/DROOLS/Loading+and+managing+rules+dynami... http://docs.codehaus.org/display/DROOLS/Loading+and+managing+rules+dynami... , which seems to fit my need. I am looking for feedbacks on users who have tried this approach. How flexible is it? My main concerns is that future versions of Drools might break a lot of things and require a lot of recoding. To me it seems like a reasonable approach. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Storing-and-loading-r... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 7 months

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BRL rules created in Guvnor can't be opened by drools-eclipse plugin

by vasilievip

Hello, I've created rule with guided editor in Guvnor, then tried to open this rule in drools-eclipse plugin - got exception. Drools version is 5.0.1. Also tried latest jbooss-tools set of plugins - problem is the same. Sample test case+ log from Eclipse are attached. http://drools-java-rules-engine.46999.n3.nabble.com/file/n982161/test2.zip test2.zip http://drools-java-rules-engine.46999.n3.nabble.com/file/n982161/log.log log.log Regards, Ivan -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/BRL-rules-created-in-... Sent from the Drools - User mailing list archive at Nabble.com.

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rules-users July 2010