May 2010 - rules-users - Jboss List Archives

by Adeyinka Timi

Hi guys, I have a drools application running that takes about 7 seconds to run. 5 seconds of this time is used in parsing 2 DRL files that 200kb (6200 lines of code) and 34kb (1400 lines of code). Do you guys have any tips or any techniques that I can use to improve performance? - Ade

15 years, 9 months

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Entry-Points can cause NullPointerExceptionand/or no rule firing

by Makewise - Vitor Rui Mendonça

Hi! Anyone with some other thought about this issue? I'm running out of ideas... Best regards, Vítor Mendonça Moreira Analista / Programador Direcção de Investigação e Desenvolvimento Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq. 2500 - 206 - Caldas da Rainha Tel: (+351) 262 832 196 Fax: (+351) 262 186 455 Web: www.makewise.pt <http://www.makewise.pt> Uma empresa: Grupo Sousa Pedro <http://www.sousapedro.com> Vitor, Please stop replying to posts with unrelated topics and just changing the title, it messes up the threaded view in most people's email app. See here for more details on netiquette: http://www.jboss.org/drools/lists.html <http://www.jboss.org/drools/lists.html> Mark On 14/05/2010 15:51, Makewise - Vitor Rui Mendonça wrote: Hi Greg! Thanks for your quick answer. I'm having some trouble with absence of events in Drools (I've send some emails on the mailing list regarding that) and I personally think it's some kind of bug (mine or, probably, drools). So, I'm looking for some help. Instead of explaining all over again, I just point the issue out. Sorry about this mess, too much time around this problem J Thanks, once again! Vítor Mendonça Moreira Analista / Programador Direcção de Investigação e Desenvolvimento Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq. 2500 - 206 - Caldas da Rainha Tel: (+351) 262 832 196 Fax: (+351) 262 186 455 Web: www.makewise.pt Uma empresa: Grupo Sousa Pedro <http://www.sousapedro.com> From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Greg Barton Sent: sexta-feira, 14 de Maio de 2010 15:31 To: Rules Users List Subject: Re: [rules-users] Entry-Points can cause NullPointerExceptionand/or no rule firing JIRA issues are for reporting bugs in drools. Is there a bug you're reporting or do you want help with this particular problem? --- On Fri, 5/14/10, Makewise - Vitor Rui Mendonça <Vitor.Mendonca(a)brisa.pt> <mailto:Vitor.Mendonca@brisa.pt> wrote: From: Makewise - Vitor Rui Mendonça <Vitor.Mendonca(a)brisa.pt> <mailto:Vitor.Mendonca@brisa.pt> Subject: [rules-users] Entry-Points can cause NullPointerException and/or no rule firing To: "Rules Users List" <rules-users(a)lists.jboss.org> <mailto:rules-users@lists.jboss.org> Date: Friday, May 14, 2010, 8:40 AM Hi again. First of all, I'm running Drools 5.1.0.SNAPSHOT on Windows and Eclipse 3.4. I've submitted a Jira Issue (https://jira.jboss.org/jira/browse/JBRULES-2511): " I've got a system that receives transactions. I want to implement the following rules: - raise an alarm(alarm event) when there aren't any transaction for an hour (or more); - if there's an alarm, no more alarms should be raised; - if there's an alarm and the system receives a transaction, that alarm should be retracted and the system should send an recovery event. I've implemented the rules this way: - ***start*** rule to insert an "EngineStart" event when the rules engine starts - ***notrx_after_start*** rule to detect absence of transactions during the first hour - ***notrx_after_trx*** rule to detect absence of transactions (during one hour) after last transaction - ***rearm*** rule to detect transactions and rearm the system. I made a Maven project with junits, which inserts transactions at specific time, in order to raise the desired events. Two set of tests were made: - the rules defined in "default" entry-point: the correspondent junit gives a NullPointerException in DefaultAgenda - the rules defined in "incoming" entry-point: the correspondent junit doesn't activate the ***rearm*** rule " The issue has an attachment with junits and rules to play with. T.I.A. Vítor Mendonça Moreira Analista / Programador Direcção de Investigação e Desenvolvimento Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq. 2500 - 206 - Caldas da Rainha Tel: (+351) 262 832 196 Fax: (+351) 262 186 455 Web: www.makewise.pt Uma empresa: Grupo Sousa Pedro <http://www.sousapedro.com> -----Inline Attachment Follows----- _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users <https://lists.jboss.org/mailman/listinfo/rules-users> _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org <mailto:rules-users@lists.jboss.org> https://lists.jboss.org/mailman/listinfo/rules-users <https://lists.jboss.org/mailman/listinfo/rules-users>

15 years, 9 months

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Re: [rules-users] Drools Execution Query

by djb

what i've found is that you should always just make things as easy as possible for the rule engine. the RETE graph cannot put 'evaluated' conditions into its graph. it can't make a graph link because the method could evaluate to anything, and therefore there is no 'cacheing', though i doubt anything is really cached. so, if you can, call that method beforehand, and put the boolean result as a field in your fact object. that will vastly improve the run time. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Execution-Quer... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 9 months

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error while executing business rules

by Puneet duggal

hi friends , I am getting the error while executing the business rule [2010-05-17 09:37:22,419] [FATAL] Error occured while creating rules package for parameter : 568 (BusinessRuleServiceImpl.java:2285) org.drools.RuntimeDroolsException: unable to determine ValueType for Class [class com.fpl.dsm.busrules.parameters.Para_568] what this mean?

15 years, 9 months

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Is it possible to access created Object inside RHS???

by Kuttiraja

Hi, I have some application using Drools. Sample rule rule "rule 1" when //some condition then Object a = new Object() //Do Something with Object end is it possible to use this newly created object from the Application? Thanks in advance Kutti -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Is-it-possible-to-acc... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 9 months

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gwt-console

by Shanika Wijerathna

Hi Im new to drools. Im trying to get gwt-console work with jboss server. So I downloaded the gwt-console code from svn ( http://anonsvn.jboss.org/repos/soag/bpm-console/trunk) and when I try excecute mvn install command from trunk it gives me following error. I tried googling but I couldn't find a way to get rid of this error. And also in forums they say that we need to change pom.xml to use drools as defult profile. Where I can change it? Thanks alot if some one can help me. Im trying to start learning jboss drools and i have already installed jboss and Guvnor. shanika@shanika-laptop:~/JBossDrools/gwtConsole$ mvn -version Maven version: 2.0.9 Java version: 1.6.0_0 OS name: "linux" version: "2.6.28-18-generic" arch: "i386" Family: "unix" shanika@shanika-laptop:~/JBossDrools/gwtConsole$ mvn install [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [ERROR] FATAL ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error building POM (may not be this project's POM). Project ID: org.jboss.bpm:gwt-console POM Location: /home/shanika/JBossDrools/gwtConsole/gui/war/pom.xml Reason: Cannot read project model from interpolating filter of serialized version. for project org.jboss.bpm:gwt-console at /home/shanika/JBossDrools/gwtConsole/gui/war/pom.xml [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.reactor.MavenExecutionException: Cannot read project model from interpolating filter of serialized version. for project org.jboss.bpm:gwt-console at /home/shanika/JBossDrools/gwtConsole/gui/war/pom.xml at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:378) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:292) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129) at org.apache.maven.cli.MavenCli.main(MavenCli.java:287) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.project.InvalidProjectModelException: Cannot read project model from interpolating filter of serialized version. for project org.jboss.bpm:gwt-console at /home/shanika/JBossDrools/gwtConsole/gui/war/pom.xml at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:882) at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInternal(DefaultMavenProjectBuilder.java:506) at org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjectBuilder.java:198) at org.apache.maven.DefaultMaven.getProject(DefaultMaven.java:583) at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:461) at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:535) at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:535) at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:365) ... 11 more Caused by: org.apache.maven.project.interpolation.ModelInterpolationException: Cannot read project model from interpolating filter of serialized version. at org.apache.maven.project.interpolation.RegexBasedModelInterpolator.interpolate(RegexBasedModelInterpolator.java:114) at org.apache.maven.project.DefaultMavenProjectBuilder.processProjectLogic(DefaultMavenProjectBuilder.java:1016) at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:878) ... 18 more Caused by: org.codehaus.plexus.util.xml.pull.XmlPullParserException: markup not allowed inside attribute value - illegal < (position: TEXT seen ...<filter token="comment.left" value="<... @332:54) at org.codehaus.plexus.util.xml.pull.MXParser.parseAttribute(MXParser.java:2030) at org.codehaus.plexus.util.xml.pull.MXParser.parseStartTag(MXParser.java:1799) at org.codehaus.plexus.util.xml.pull.MXParser.nextImpl(MXParser.java:1127) at org.codehaus.plexus.util.xml.pull.MXParser.next(MXParser.java:1093) at org.codehaus.plexus.util.xml.Xpp3DomBuilder.build(Xpp3DomBuilder.java:187) at org.codehaus.plexus.util.xml.Xpp3DomBuilder.build(Xpp3DomBuilder.java:94) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parsePluginExecution(MavenXpp3Reader.java:3144) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parsePlugin(MavenXpp3Reader.java:2901) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parseBuild(MavenXpp3Reader.java:753) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parseModel(MavenXpp3Reader.java:2224) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.read(MavenXpp3Reader.java:4422) at org.apache.maven.model.io.xpp3.MavenXpp3Reader.read(MavenXpp3Reader.java:4433) at org.apache.maven.project.interpolation.RegexBasedModelInterpolator.interpolate(RegexBasedModelInterpolator.java:105) ... 20 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: < 1 second [INFO] Finished at: Tue May 18 09:48:47 IST 2010 [INFO] Final Memory: 2M/67M [INFO] ------------------------------------------------------------------------ Thanks Shanika

15 years, 9 months

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Guvnor M1 and jBOSS AS 5.1

by Kessler Bortoluzzi, Mariana

Hi everyone, I'm having trouble deploying Guvnor M1 in jBOSS AS 5.1.0.GA. When I start the AS I become a long list of errors and at the end there is the message: DEPLOYMENTS IN ERROR: Deployment "vfsfile:/C:/Programme/JBOSS/jboss-5.1.0.GA/server/default/deploy/d rools-guvnor.war/" is in error due to the following reason(s): javax.management. InvalidAttributeValueException: Set attribute has class class org.jboss.securit y.integration.JNDIBasedSecurityManagement loaded from BaseClassLoader@113ca76{vf sfile:/C:/Programme/JBOSS/jboss-5.1.0.GA/server/default/conf/jboss-servi ce.xml} that is not assignable to attribute class interface org.jboss.security.ISecurity Management loaded from BaseClassLoader@f47144{vfsfile:/C:/Programme/JBOSS/jboss- 5.1.0.GA/server/default/deploy/drools-guvnor.war/} Do any of you know what the problem might be? best regards, Mariana

15 years, 9 months

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NullPointerException @ modify()

by H.C.

Hi, I am getting a very puzzling NullPointerException when I call modify() on my object in working memory. I have the following rule: rule "Assign awardable activity to default context" ruleflow-group "select qualified activity" when $context : ResultContext( activity != null && activity.qualifiedActivity == null ) $candidate : CandidateMatch( member != null && match != null && $awardable : match && eval( match instanceof QualifiedActivity) && eval(((QualifiedActivity)$awardable).isAwardable())) $qa : QualifiedActivity() from $candidate.match then modify($context){ getActivity().setQualifiedActivity($qa); } end The NullPointerException happens right at modify($context). I can clearly see the $context object in working memory and this rule wouldn't fire without this object having a value anyway. Here is some activation info for what it's worth: [Activation rule=Assign awardable activity to default context, tuple=[fact 0:129:21218203:1244484333:141:QualifiedActivity[groupID=TRGT41,activityID=OHC.Self.Physical,evaluateGoal=false,shared=false,awardable=true]] [fact 0:54:30003599:-98318528:138:com.biperf.optumhealth.domain.CandidateMatch@fa2943b2] [fact 0:1:24821875:24821875:1:com.biperf.optumhealth.rules.ResultContext@17ac073] ] Stacktrace: org.drools.runtime.rule.ConsequenceException: java.lang.NullPointerException at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:980) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:917) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1126) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:697) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:663) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:200) at com.biperf.optumhealth.service.impl.RuleEngineSession.execute(RuleEngineSession.java:89) at com.biperf.optumhealth.rules.qualifiedactivity.TestQualifiedActivity.testFindQualifiedActivity(TestQualifiedActivity.java:88) 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.internal.runners.TestMethod.invoke(TestMethod.java:59) at org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:98) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:79) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:87) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42) at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88) at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51) at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37) at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: java.lang.NullPointerException at org.drools.reteoo.RightInputAdapterNode.retractLeftTuple(RightInputAdapterNode.java:153) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateRetractLeftTuple(SingleLeftTupleSinkAdapter.java:131) at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateRetractLeftTuple(SingleLeftTupleSinkAdapter.java:42) at org.drools.reteoo.ExistsNode.retractLeftTuple(ExistsNode.java:356) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateRetractLeftTuple(CompositeLeftTupleSinkAdapter.java:159) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateRetractLeftTupleDestroyRightTuple(CompositeLeftTupleSinkAdapter.java:80) at org.drools.reteoo.FromNode.retractLeftTuple(FromNode.java:176) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateRetractLeftTuple(SingleLeftTupleSinkAdapter.java:131) at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateRetractLeftTupleDestroyRightTuple(SingleLeftTupleSinkAdapter.java:54) at org.drools.reteoo.FromNode.retractLeftTuple(FromNode.java:176) at org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:234) at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:195) at org.drools.common.AbstractWorkingMemory.modifyRetract(AbstractWorkingMemory.java:1296) at org.drools.base.DefaultKnowledgeHelper.modifyRetract(DefaultKnowledgeHelper.java:184) at org.drools.base.DefaultKnowledgeHelper.modifyRetract(DefaultKnowledgeHelper.java:180) at com.biperf.optumhealth.Rule_Assign_awardable_activity_to_default_context_0.consequence(Rule_Assign_awardable_activity_to_default_context_0.java:21) at com.biperf.optumhealth.Rule_Assign_awardable_activity_to_default_context_0ConsequenceInvoker.evaluate(Rule_Assign_awardable_activity_to_default_context_0ConsequenceInvoker.java:28) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:971) ... 29 more -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/NullPointerException-... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 9 months

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Access to variables form sub-flows

by pvm

hi, i've create a working set of rules via the Eclipse IDE. I've now factored my rule set into a sub flow that i want to call twice - each time with differrent parameters. i've created the sub-flow .rf file, and added a sub-flow call to it in my main flow. I've defined variables for the sub flow by clicking on the background and using properties. BUT... I can't access the variable in the sub flow rule groups! e.g. i define "isManager" as a variable, and then i write: if Agent() // there are plenty of these objects in my knowledge base... then system.out.println("found an agent, and the local variable is " + isManager); i get an error "isManager cannot be resolved" ? How am i supposed to access a variable in the sub flow? thanks all... -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Access-to-variables-f... Sent from the Drools - User mailing list archive at Nabble.com.

15 years, 9 months

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get image of flow from xml

by Daniel Gimenes

I'm trying to show an image of a workflow on a web page, based on it's xml. I've first tried to do this by using drools-eclipse project functionality of export workflows as images, but gave up because the project has many dependencies. Then I tried the drools-guvnor, which do exactly what I want, but it's developed using GWT. My problem i'm having now is with using drools-guvnor jar in my GWT project, and then i'll still have to integrate it with SEAM. I want to know if this can be done. Have someone already done this before? Is there a better way?

15 years, 9 months

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rules-users May 2010