June 2014 - rules-users - Jboss List Archives

NullPointerException at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateToVersion

by tia

Hello, I'm trying to add a new rule on the fly like here: https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test... Here is the method to add a rule, once the KieSession is created and configured: public void addRule(String rule){ KieServices ks= KieServices.Factory.get(); ReleaseId rid= ks.newReleaseId("org.kie", "businessrules", "1.0"); KieFileSystem kfs = ks.newKieFileSystem(); kfs.generateAndWritePomXML(rid); kfs.write("src/main/resources/rule.drl",rule); KieBuilder kb = ks.newKieBuilder(kfs).buildAll(); if( kb.getResults().hasMessages( org.kie.api.builder.Message.Level.ERROR ) ) { for( org.kie.api.builder.Message result : kb.getResults().getMessages() ) { System.err.println(result.getText()); } } InternalKieModule kieModule = (InternalKieModule) ks.getRepository() .getKieModule(rid); byte[] jar = kieModule.getBytes(); Resource jarRes = ks.getResources().newByteArrayResource(jar); ks.getRepository().addKieModule(jarRes); kieContainer.updateToVersion(rid); } But when I'm calling this method, I get the error below: java.lang.NullPointerException at org.drools.core.util.LinkedList.remove(LinkedList.java:168) at org.drools.core.phreak.AddRemoveRule.mergeSegment(AddRemoveRule.java:938) at org.drools.core.phreak.AddRemoveRule.correctSegmentOnSplitOnRemove(AddRemoveRule.java:377) at org.drools.core.phreak.AddRemoveRule.removeRule(AddRemoveRule.java:182) at org.drools.core.reteoo.ReteooBuilder.removeTerminalNode(ReteooBuilder.java:171) at org.drools.core.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:165) at org.drools.core.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:1406) at org.drools.core.reteoo.ReteooRuleBase.removeObjectsGeneratedFromResource(ReteooRuleBase.java:1652) at org.drools.compiler.compiler.PackageBuilder.removeObjectsGeneratedFromResource(PackageBuilder.java:3898) at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateToVersion(KieContainerImpl.java:114) For the line : "kieContainer.updateToVersion(rid);" But if I'm firing the rules once (kieSession.fireAllRules();) before adding the new rule, I don't get the exception O_o Someone has any idea why ? thanks! -- View this message in context: http://drools.46999.n3.nabble.com/NullPointerException-at-org-drools-comp... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Adding eval on rule cause it to run in infinite loop

by brachi

for this Drools Fact Type: /* declare DvFacts0 @propertyReactive IsNUMERIC: Double condIsNUMERIC: Double end*/ I have this rule: /*rule "1" salience -1 agenda-group "agenda1" when $condIsNUMERIC: DvFacts0(eval(condIsNUMERIC == null ) ) $conclusion: DvFacts0( ) then modify($conclusion){setIsNUMERIC(1.0)}; end*/ the rule hit just one time without the eval clause, adding the eval cause this rule to run in infinite loop. have an idea? put attention that I add @propertyReactive on the DVFacts0 to avoid this. -- View this message in context: http://drools.46999.n3.nabble.com/Adding-eval-on-rule-cause-it-to-run-in-... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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"Unknown KieSession name: ksession-rules if we use @webservice

by ganeshneelekani

Hi Team, I am feeling some strange issue, I can run my rules if I use void main(), if I run with same class with @webservice then it says "Unknown KieSession name: ksession-rules" Please find screen shot of programming structure, Do I need to modify if I use webservice. <http://drools.46999.n3.nabble.com/file/n4030016/drools.png> -- View this message in context: http://drools.46999.n3.nabble.com/Unknown-KieSession-name-ksession-rules-... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Unknown KieSession name: ksession-rules by using webservice

by ganeshneelekani

Hi Team, I am feeling some strange issue, I can run my rules if I use void main(), if I run with same class with @webservice then it says "Unknown KieSession name: ksession-rules" Please find screen shot of programming structure, Do I need to modify if I use webservice -- View this message in context: http://drools.46999.n3.nabble.com/Unknown-KieSession-name-ksession-rules-... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Vehicle routing demo to show score flexibility in OptaPlanner

by Tuomas Kallio

Hi, I found "Vehicle routing demo to show score flexibility in OptaPlanner" from youtube http://www.youtube.com/watch?v=4hp_Qg1hFgE I did not find this example and source codes from Web, can i download source somewhere? Thanks in advance! -- View this message in context: http://drools.46999.n3.nabble.com/Vehicle-routing-demo-to-show-score-flex... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Drools Planner: Vehicle routing problems

by davidglassborow

Hi, as discussed the other day with Ge0ffrey on IRC, I've been trying to get some vehicle routing done using the new TSP / chaining functionality in drools planner. I've written an example, but am having problems with the chaining of jobs together. After pulling my hair out, I've put together an example into my fork of planner, showing a simplified example of how I am approaching it, and the problem that can be replicated. https://github.com/davidglassborow/drools-planner/tree/vehicle_routing It is a very simple console app along the same lines as the hello world example for NQueens. On running it will print out the chains, and you will see the some Jobs appear more than once in the same list. On the planning variable it seems to be get assigned in front of itself, I've put some notes in the source, and checked that the same doesn't occur in your TSP example. I'm not sure if its a bug in the way I've setup things, or whether its an issue in the chain move code. Greatly appreciated if anybody in the know gets a chance to have a look. Thanks, David -- View this message in context: http://drools.46999.n3.nabble.com/Drools-Planner-Vehicle-routing-problems... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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drools-examples.zip location?

by McArthur, Kenneth

Hi, Reading excellent very helpful document at http://docs.jboss.org/drools/release/6.0.1.Final/drools-docs/html_single A drools-examples zip is mentioned. Anyone know where it might be? Thanks, Ken

11 years, 10 months

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Decision Tables and modify

by gboro54

What is the proper way to do modify in a decision table? I know this is a very generic question but was wondering if anyone has experience with this and could offer insight(I have a couple ways I think will work but they feel a bit hackey) -- View this message in context: http://drools.46999.n3.nabble.com/Decision-Tables-and-modify-tp4029995.html Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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How can we make the ‘over window:time’ parameter being configurable?

by moonbeam

How can we make the ‘over window:time’ parameter being configurable? Something similar to the following rule (that does not compile at all). See the $windowTime variable. declare TemperatureThreshold windowTime : String = "30s" max : long = 70 end declare SensorReading @role( event ) temperature : String = "40" end rule "Sound the alarm in case temperature rises above threshold" when TemperatureThreshold( $max : max, $windowTime : windowTime ) Number( doubleValue > $max ) from accumulate( SensorReading( $temp : temperature ) over window:time( $windowTime ), average( $temp ) ) then // sound the alarm end -- View this message in context: http://drools.46999.n3.nabble.com/How-can-we-make-the-over-window-time-pa... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Re: [rules-users] Drools Workbench - VFS Repository Clustering - Workbench Assets Not synched

by Zahid Ahmed

Hi, Getting following error in console of server B when making any change in Workbench server A 14:44:19,780 ERROR [org.apache.helix.messaging.handling.HelixTask] (pool-18-thread-21) Exception while executing a message. java.lang.NullPointerException msgId: 939154ed-eedb-493f-a803-83883764276a type: USER_DEFINE_MSG: java.lang.NullPointerException at org.uberfire.metadata.io.IOServiceIndexedImpl.setupWatchService(IOServiceIndexedImpl.java:168) [uberfire-metadata-commons-io-0.3.1.Final.jar:0.3.1.Final] at org.uberfire.metadata.io.IOServiceIndexedImpl.getFileSystem(IOServiceIndexedImpl.java:126) [uberfire-metadata-commons-io-0.3.1.Final.jar:0.3.1.Final] at org.uberfire.io.impl.cluster.IOServiceClusterImpl$SyncFileSystemMessageHandler.handleMessage(IOServiceClusterImpl.java:919) [uberfire-io-0.3.1.Final.jar:0.3.1.Final] at org.uberfire.io.impl.cluster.helix.ClusterServiceHelix$MessageHandlerResolverWrapper$1$1.handleMessage(ClusterServiceHelix.java:289) [uberfire-io-0.3.1.Final.jar:0.3.1.Final] at org.apache.helix.messaging.handling.HelixTask.call(HelixTask.java:93) [helix-core-0.6.2-incubating.jar:0.6.2-incubating] at org.apache.helix.messaging.handling.HelixTask.call(HelixTask.java:50) [helix-core-0.6.2-incubating.jar:0.6.2-incubating] at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.7.0_25] at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.7.0_25] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25] at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25] 14:44:20,506 ERROR [org.apache.helix.messaging.handling.HelixTask] (pool-18-thread-21) Message execution failed. msgId: 939154ed-eedb-493f-a803-83883764276a, errorMsg: null 14:44:20,985 INFO [org.apache.helix.messaging.handling.HelixTaskExecutor] (pool-18-thread-21) message finished: 939154ed-eedb-493f-a803-83883764276a, took 1260 14:44:20,995 INFO [org.apache.helix.manager.zk.CallbackHandler] (ZkClient-EventThread-117-localhost:2199) 117 START:INVOKE /brms-cluster/INSTANCES/nodeTwo_22/MESSAGES listener:org.apache.helix.messaging.handling.HelixTaskExecutor Regards, Zahid Ahmed

11 years, 10 months

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rules-users June 2014