January 2014 - rules-users - Jboss List Archives

Drools 6.0.1: Pushing changes back to Workbench GIT using SSH

by dotrc

I am using workbench for managing my rules maven projects within the embedded GIT repository. I am aware that using git:// protocol, I can clone an existing rule repository; I can do this successfully. For authoring rules, I want to use Eclipse (using EGit). I want to push my commits back to the GIT repo. I understand that I'll have to use ssh protocol instead of git for specifying the repo, something like this: ssh://{userName}@localhost:8001/{repoName} When we use a standard GIT repo like stash, it gives us an option to set our public key on the stash server, but I'm not able to find a way to do that with the embedded ssh server within workbench. Hence, I'm not able to authenticate myself and perform a push. We tried creating a private-public key pair using ssh-keygen and put that within c:\users\<username>\.ssh and added the public key to 'authorized_keys(2) (though I know this may not be the right place) and then used the private key as the identity file with ssh client directly from cygwin, again to no avail. Any pointers will be really appreciated. Also, should the username be 'admin' or any other specific one for pushing? Will the existing Windows username work? Thanks, Rishi -- View this message in context: http://drools.46999.n3.nabble.com/Drools-6-0-1-Pushing-changes-back-to-Wo... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 8 months

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How to read XML using XMLPackageReader-Drools-compiler.5.2.1.final?

by Praveen

Hi, I am using Drools-compiler.5.2.1.final. I am trying to convert an drl to xml and vice versa using DrlParser, DrlDumper, XMLPackageReader and XML Dumper. Drl to XML conversion works fine but XML to Drl throws NPE. I have placed the XML file under a folder called sample. NPE is thrown at line 5.. Also attached is the exception. Please suggest. TIA. Reader source = new InputStreamReader( DroolsConversionHelper.class.getResourceAsStream(xmlFileName)); PackageBuilderConfiguration conf = new PackageBuilderConfiguration(); XmlPackageReader reader = new XmlPackageReader(conf.getSemanticModules()); DrlDumper dumper = new DrlDumper(); //line 5 reader.read(source); PackageDescr descr = reader.getPackageDescr(); String test = dumper.dump(descr); System.out.println(test); java.lang.NullPointerException at org.drools.xml.ExtensibleXmlParser.resolveSchema(ExtensibleXmlParser.java:696) at org.drools.xml.ExtensibleXmlParser.resolveEntity(ExtensibleXmlParser.java:622) at com.sun.org.apache.xerces.internal.util.EntityResolverWrapper.resolveEntity(Unknown Source) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.resolveEntity(Unknown Source) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.resolveDocument(Unknown Source) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.findSchemaGrammar(Unknown Source) at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source) Regards, Praveen. -- View this message in context: http://drools.46999.n3.nabble.com/How-to-read-XML-using-XMLPackageReader-... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 9 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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"Cannot find KieModule" with kieServices.newKieContainer() with LATEST or RELEASE instead of explicit version number (eg: 0.0.1)

by Matteo Mortari

Hello, in the hope this could save time if someone has been experiencing same issue. Drools 6.0.1.Final I had message "Cannot find KieModule" with kieServices.newKieContainer() with LATEST or RELEASE , instead of explicit version number (eg: 0.0.1) on a application where the KIE module Rule artifact project kjar has been locally-installed from remote Maven repository, that is the right hand side of this diagram: http://docs.jboss.org/drools/release/6.0.1.Final/drools-docs/html_single/... Meaning that before launching Application, I performed mvn org.apache.maven.plugins:maven-dependency-plugin:2.8:get -Dartifact=com.acme:X:LATEST -DrepoUrl= http://nexus-hostname/nexus/content/repositories/releases/ Then: kieServices.newKieContainer() with LATEST, kieServices.newKieContainer() with RELEASE, failed with stack trace: Exception in thread "main" java.lang.RuntimeException: Cannot find KieModule: com.acme:X:RELEASE at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:86) at (...) But kieServices.newKieContainer() with a fixed version, eg.: 0.0.2 did indeed worked OK, if installed in the local .m2 repository. To avoid this issue, I found only 3 possible workarounds 1 use mvn maven-dependency-plugin:go-offline but did not work all of the time 2 manually ensure maven-metadata-local.xml file is generate in local .m2 repository 3 just download manually .jar and .pom of the remote maven repo, and then install with mvn install:install-file In this case, of workaround kieServices.newKieContainer() works OK with all the version LATEST, RELEASE, and fixed version number. Raise jira DROOLS-419 with more details and example projects, please don't hate me if was just me missing something or not-Drools issue actually =P In my defense I had good intentions saving somebody's else time in case same strange behavior, which is really strange because to me it worked only with explicit fixed version number, and that was really bizarre ;) Hope this helps, Ciao MM

11 years, 10 months

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Drools 6 support for changeset

by wtang

I have a requirement in which when a rule is changed, the change needs to be reflected immediately without retarting the system. In Drools 5.x we can use the changeset.xml with the knowlegde agent. Now in Drool 6.0 we have Kie API. 1) does Kie support changeset.xml? 2) Upper management don't want to use kie, they want to use jsr94. Does jsr94 support changeset.xml? -- View this message in context: http://drools.46999.n3.nabble.com/Drools-6-support-for-changeset-tp402713... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 11 months

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Drools 6.0 Kie API vs Drools 5.x Knowledge API

by wtang

Hello, I am upgrading from Drools 5.x in which I am using the Knowledge Base API to Drools 6.0. I understand that Drools 6.0 still support the 5.x Knowledge API. I definitely need to upgrade from 5.x to 6.0, but should I change my existing code that was using the 5.x Knowledge API to use the new 6.0 Kie API? What are the pros and cons? thanks! -- View this message in context: http://drools.46999.n3.nabble.com/Drools-6-0-Kie-API-vs-Drools-5-x-Knowle... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 11 months

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Drools Planner: what if possible values of a PlanningVariable are dependent of another one?

by Willem van Asperen

Hi All, I have a PlanningEntity that has several planning variables, say A and B. Now, if A is O then B can be X or Y and when A is P then B can be Y or Z. I see two routes: * create a solution property that generates X, Y and Z as alternatives for B and rely on the score rules to dismiss improper values, depending on the value of A * create an entity property that only generates the possible values for B (i.e. X,Y for A=O and Y,Z for A=P) What is the best route? (Alternatively I do not use the constructionHeuristic and just start of my solution with a randomly (but correct) generated solution) Regards, Willem

11 years, 11 months

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Spring, KnowledgeAgent, and Guvnor

by paulB

I'm having a problem connecting my KnowledgeAgent to a package in Guvnor. I'm using Spring to instantiate the KnowledgeAgent. The agent initializes perfectly well when I point to a local change-set that in-turn points to a local rule. However, even though I have the same rule in a package in Guvnor, the KnowledgeAgent fails with the following exception when I point to the package's change-set in Guvnor: The code at KnowledgeBaseImpl.java:148 is (using 5.3.0.Final): Here is the simple rule in the Guvnor as returned by the URL for the package source URL: Here is the local change-set definition. The line that is commented is the failing resource, whereas the local file resource works fine: Guvnor is residing on a Tomcat server. I could not find anything related to this on the forum. Thank you for any hints. -Paul -- View this message in context: http://drools.46999.n3.nabble.com/Spring-KnowledgeAgent-and-Guvnor-tp3500... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 11 months

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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.

11 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.

12 years

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rules-users January 2014