January 2014 - rules-users - Jboss List Archives

Starting resource change scanner and notifier in drools-server.

by Graham Thomson

Hi, I would like to ask for help with setting up drools-server with Guvnor. I am using version 5.1.1 of both. I am trying to set up an instance of drools-server in Tomcat that periodically loads new updates of packages published in Guvnor (both drools-server and Guvnor run in the same instance of Tomcat). My change set definition is as follows: <?xml version="1.0" encoding="UTF-8"?> <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 http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-api/src/...'> <add> <resource source='http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/<one of my packages>/LATEST' type='PKG' basicAuthentication="enabled" username="<username>" password="" /> <resource source="http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/<another of my packages>/LATEST" type="PKG" basicAuthentication="enabled" username="<username>" password="" /> </add> </change-set> My knowledge-services.xml configuration is as follows (based on the unit test examples highlighted in http://article.gmane.org/gmane.comp.java.drools.user/20992/match=drools+s...): <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:drools="http://drools.org/schema/drools-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://drools.org/schema/drools-spring http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-containe..."> <drools:resource-change-scanner id="s1" interval="5" /> <drools:execution-node id="node1" /> <drools:ksession id="ksession1" type="stateless" kbase="kbase1" node="node1"/> <drools:kbase id="kbase1" node="node1" /> <drools:kagent id="kagent1" kbase="kbase1"> <drools:resources> <drools:resource type="CHANGE_SET" source="classpath:changeset.xml" /> </drools:resources> </drools:kagent> </beans> On loading drools-server, the resources listed in the change set are loaded and available. The problem is that when a new package built and published in Guvnor, drools-server does not detect this and update itself. The effect is the same as if a KnowledgeAgent were used locally and ResourceFactory.getResourceChangeNotifierService().start(); ResourceFactory.getResourceChangeScannerService().start(); were not called. This leads me to the assumption that drools-server does not start these services by default. My question is then can/how do I configure drools-server to start these services such that it will update new changes from Guvnor automatically? Thanks a lot for any help you can offer, Cheers, Graham.

9 years, 11 months

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Cannot find KieModule: org.default:artifact:1.0.0-SNAPSHOT

by waynemetcalfe

I've seen this problem a few places while searching for a solution. Is it possible to overcome this issue? Drools version:6.0.0.Final Java version: 1.7.0_45 Code snippet: ... final KieServices ks = KieServices.Factory.get(); final KieRepository kr = ks.getRepository(); final KieFileSystem kfs = ks.newKieFileSystem(); //ruleScript is simply a string containing the rules kfs.write("src/main/resources/com/company/test/rules/rules.drl", ruleScript); KieBuilder kb = ks.newKieBuilder(kfs); kb.buildAll(); if (kb.getResults().hasMessages(Level.ERROR)){ configuration.getLog().error("\nSomething wrong here!\n\n"); } final KieContainer kContainer = ks.newKieContainer(kr.getDefaultReleaseId()); session = kContainer.newKieSession(); Exception: java.lang.RuntimeException: Cannot find KieModule: org.default:artifact:1.0.0-SNAPSHOT at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:86) Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Cannot-find-KieModule-org-default-artif... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years

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How to feed camel-server with kmodules using kie-ci?

by wogo

Hi, I am trying to integrate drools-camel-server-example and kie-ci (6.0.1) plugin. My goal is to load modules from maven (built/deployed from kie-wb). Maven configuration looks fine, as MavenSettings are initialized while debugging (I see my repos). I do everything locally to make things simpler. Standalone code (from Eclipse) works fine with kie-cie - I execute "Underage" rule from mortgages example. I have built server with all kie-cie dependencies, however none of kmodules deployed in Maven is loaded. What am I missing? Is there anything special required in knowledge-services.xml (I have used a default one provided originally in .war)? Do you have an example of mortgages obtained via camel-server? Regards, Wojciech -- View this message in context: http://drools.46999.n3.nabble.com/How-to-feed-camel-server-with-kmodules-... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years

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named query TasksAssignedAsPotentialOwner doesn't work with MySql db

by Frank Knoll

Hi, When I add a task (having two potential owners) by calling the method addTask followed by calling the method getTasksAssignedAsPotentialOwner of org.jbpm.task.service.TaskClient I expect to receive a list of TaskSummaries containing at least the previously added task. But I actually get an empty list! Here is my setup and possible solution: I am using the trunk version of ./jbpm-human-task/src/main/resources/META-INF/orm.xml and a MYSQL database. When calling addTask the Task table will be populated with a NULL actualOwner_id. The named query TasksAssignedAsPotentialOwner "select new org.jbpm.task.query.TaskSummary(...t.taskData.actualOwner...) from ... left join t.taskData.actualOwner ..." of orm.xml generates SQL consisting of an inner join "inner join OrganizationalEntity user7_ on task0_.actualOwner_id=user7_.id" which doesn't take the NULL actualOwner_id correctly into account. When I replace the named query TasksAssignedAsPotentialOwner with "select new org.jbpm.task.query.TaskSummary(...actualOwner...) from ...left join t.taskData.actualOwner as actualOwner ...", then the generated SQL consists of an "left outer join OrganizationalEntity user2_ on task0_.actualOwner_id=user2_.id" which takes the NULL actualOwner_id correctly into account. So I get a List of TaskSummaries containing the added task. Is this a correct fix? Cheers, Frank -- View this message in context: http://drools.46999.n3.nabble.com/named-query-TasksAssignedAsPotentialOwn... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years

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NullPointerException with kie-spring 6.0.1 and Spring 4.0

by Andrew Berman

Hello, I'm trying to play around with Drool 6.0.1 integration with Spring (I'm using spring-boot which includes spring 4.0). I've looked at the unit tests written and have copied them pretty much exactly. When I start the app, I consistently receive: Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.kie.spring.KModuleBeanFactoryPostProcessor]: Constructor threw exception; nested exception is java.lang.NullPointerException at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:164) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1069) ... 22 more Caused by: java.lang.NullPointerException at org.kie.spring.KModuleBeanFactoryPostProcessor.initConfigFilePath(KModuleBeanFactoryPostProcessor.java:79) at org.kie.spring.KModuleBeanFactoryPostProcessor.<init>(KModuleBeanFactoryPostProcessor.java:64) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148) When debugging the NPE comes from line 79, getClass().getResource("/").getPath(), because getResource yields null. Here is my spring context file: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:kie="http://drools.org/schema/kie-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://drools.org/schema/kie-spring http://drools.org/schema/kie-spring.xsd "> <kie:kmodule id="kmodule"> <kie:kbase name="kbase1" packages="rules.drools"> <kie:ksession name="ksession"> <kie:consoleLogger/> </kie:ksession> </kie:kbase> </kie:kmodule> <bean id="kiePostProcessor" class="org.kie.spring.KModuleBeanFactoryPostProcessor"/> </beans> Can someone help out? Thanks!!

10 years, 1 month

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Creating selection filter for PlanningEntity with 4 planning variables

by maciekpob

Hi all, Does anybody know how to create selectionfilter for PlanningEntity with many PlanningVariables? Thanks, Maciek -- View this message in context: http://drools.46999.n3.nabble.com/Creating-selection-filter-for-PlanningE... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 1 month

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DSL: Unable to Expand Error - Even things that shouldn't be expanded.

by SrjTx

I've done a couple DSL/RDSLR rules in the past with success. Been trying to create one today but get "Unable to expand" errors on validation on every line, even with not substitutions. What am i missing? Here is a NON-DSL/RDRL file that works just fine. 5. | rule "AAA" 6. | dialect "mvel" 7. | when 8. | $sep : DroolsSepBean( ) 9. | then 10. | System.out.println("HI"); 11. | end Here is a DSL/RDSLR file that generates the errors below (note this is the same code as above and nothing should substitute) I even took out the $sep assignment to make it more simple (it gives same errors if it's in there) 5. | rule "dsltest" 6. | dialect "mvel" 7. | when 8. | DroolsSepBean( ) 9. | then 10. | System.out.println("HI"); 11. | end 18:42:57,396 ERROR [org.drools.compiler.kie.builder.impl.AbstractKieModule] (http-/127.0.0.1:8080-2) Unable to build KieBaseModel:defaultKieBase [8] Unable to expand: DroolsSepBean( ) [10] Unable to expand: System.out.println("HI"); -- View this message in context: http://drools.46999.n3.nabble.com/DSL-Unable-to-Expand-Error-Even-things-... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 1 month

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I give up, where is drools:execution-node defined??

by dunnlow

I see <drools:execution-node id="node1"/> in the drools server knowledge-services.xml and throughout the documentation. But, my app can't compile because that is undefined. I looked in drools-spring.xsd and spring-beans.xsd (the two namespaces defined in that file), but no joy. Am I just blind?? Anyone know where it is defined? Thanks -J -- View this message in context: http://drools.46999.n3.nabble.com/I-give-up-where-is-drools-execution-nod... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 1 month

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Does drools generate document from drl files?

by Zhao Yi

I want to add some comments on drl files and get a document from that. I know that guvnor can do this for me but it simply copy all the drl file content into a pdf file. What I want is that we can write some comments in a specified format provided by drools and generate a document like, html. Can I do this in drools or not? -- View this message in context: http://drools.46999.n3.nabble.com/Does-drools-generate-document-from-drl-... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 1 month

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Error Inserting events into drools fusion stream

by Ayush

Hi All, I'm trying to implement drools fusion into my app. The scenario of my app is as follows: - Facts will be received continuosly. - On receving fact I'm generating a new event and adding it into a new working memory entry point stream. Also I'm adding facts into session coz I'll be updating them. - I need to apply rules on continuous stream of events. - I've not used any camel + spring or pipeline. Are these mandatory to use? For 1st fact everything works fine but when I receive 2nd fact I'm getting Now when I'm trying to get entry point on receive of 2nd alarm I'm getting org.drools.RuntimeDroolsException: Unexpected exception executing action org.drools.reteoo.PropagationQueuingNode$PropagateAction@9ff411 Caused by: java.util.concurrent.RejectedExecutionException. On debug I found that the above exception is coming when I'm calling session.getWorkingMemoryEntryPoint("MyStream"); Can anyone please help me that how should I insert facts and events into working memory? I'd invested ample amount of time searching for this but I'm empty handed. Guys please help this is very urgent for me. Thanks in anticipation -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Error-Inserting-event... Sent from the Drools - User mailing list archive at Nabble.com.

10 years, 2 months

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rules-users January 2014