May 2014 - rules-users - Jboss List Archives

by Rupesh M G

Hi, I tested Optaplanner successfully for a fleet planning application. Upto 1200 trips with around 80 vehicles for 3 days is fine. I'm reaching the target of 0 hard constraints in less than 30 minutes. But my target is to plan for a month with 12000 trips using 80 vehicles. This time it didn't complete even after 12 hours. I found the memory (< 500 MB) and CPU (25%) usage is less. So tried running 3 solver threads and grouping the vehicles. Now CPU usage increases. I followed the vehicle routing sample application and the config xml is very similar. I used late acceptance (200) and accept count (1000). I'm using incremental score calculation; and applied change & swap filters in the config xml. Requesting experts for some thoughts on how Optaplanner can scale on similar situations. Thanks & Regards, Rupesh DISCLAIMER: "The information in this e-mail and any attachment is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received this e-mail in error, kindly contact the sender and destroy all copies of the original communication. IBS makes no warranty, express or implied, nor guarantees the accuracy, adequacy or completeness of the information contained in this email or any attachment and is not liable for any errors, defects, omissions, viruses or for resultant loss or damage, if any, direct or indirect."

11 years, 10 months

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Is property reactive bug in 5.5 fixed in 6.0

by wtang

Hi, I am having issues with property reactive causing some rules not to get fired. Looks like someone also encountered this issue in 5.5 and it was agreed to be a bug. I am using 6.0 and was wondering if this bug is fixed. Here is the detail of the property reactive bug in 5.5: http://drools.46999.n3.nabble.com/same-criteria-across-multiple-rules-can... thanks! Wing Tang -- View this message in context: http://drools.46999.n3.nabble.com/Is-property-reactive-bug-in-5-5-fixed-i... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Possibility to use variable reference in date comparison using coincides?

by Björn Nord

Hi, Is there a way to use a reference to a variable in the coincide-section like the one I have tried below with $expireWeeks? rule "Request expired analysis" dialect "mvel" when SettingForDefinition( definition == "DonationAnalysisRequest" , $code : setting, $expireWeeks : value) Donation( $donationDate : sampleDate) // $expireWeeks below does not work. not PerformedDonationAnalysis(code == $code, sampleDate coincides [$expireWeeks] $donationDate) then ... End Kindest regards, Björn

11 years, 10 months

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NullPointerException when calling FactType.set and FactType.setFromMap

by Patel, Ronak (Autonomy)

Hello all, I'm getting a NullPointerException when calling org.kie.api.definition.type.FactType.set(Object, String, Object) and also when I call org.kie.api.definition.type.FactType.setFromMap(Object, Map<String, Object>). The exception stack trace points to the same line in both cases: Exception in thread "main" java.lang.NullPointerException at org.drools.core.factmodel.ClassDefinition.set(ClassDefinition.java:255) ... Doing some debugging, I found that the getFieldAccessor() call in org.drools.core.factmodel.ClassDefinition, line 255, is returning null, which is what's causing this. I didn't dig deeper than that, though. I created the data model in Drools Workbench 6.0.1 final and I've double-checked that the field I'm passing in to set a value exists on the object. Below is my code and it's throwing the NPE on the last line. I'm going to try to use standard Java reflection instead for now, but any assistance on this would be appreciated. I can provide any other code, the KieModule JAR produced by Workbench, or anything else, if needed. KieServices ks = KieServices.Factory.get(); KieContainer kContainer = ks.newKieContainer(ks.newReleaseId("com.hp.pa.sample", "realestate", "LATEST")); KieSession kSession = kContainer.newKieSession(); KieBase kBase = kSession.getKieBase(); FactType agentAssignmentType = kBase.getFactType("com.hp.pa.sample.realestate", "AgentAssignmentData"); FactType property4SaleType = kBase.getFactType("com.hp.pa.sample.realestate", "PropertyForSale"); if (agentAssignmentType == null || property4SaleType == null) System.err.println("Could not find a FactType"); Object agentAssignment = null; Object property4Sale = null; try { agentAssignment = agentAssignmentType.newInstance(); property4Sale = property4SaleType.newInstance(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } property4SaleType.set(property4Sale, "city", "San Diego"); Thank you, Ronak Patel Software Designer HP Autonomy

11 years, 10 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, 10 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, 10 months

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How to set up KIE WB + Drools Camel Server 6.0.1

by rt_olsson

Hi. I'm currently in the process of setting up a Drools (6.0.1) environment from scratch. The web applications are deployed on Tomcat (7.0.52) and everything is using an MySQL (5.6.13) database. The goal is to have the KIE Workbench up and running, together with jBPM and Drools. We also want to communicate with Drools/jBPM via some kind of REST/SOAP service(s). I have cloned the Drools source code repositories and built the various binaries from there. This is what I've done: 1) Installed Tomcat 7.0.52 a) applied configuration for Bitronix TM and the local MySQL server (according to instructions in KIE WB README) 2) Deployed Drools Camel Server 6.0.1 (drools-camel-server-example-6.0.1.Final) a) added a dependency to kie-ci to the pom.xml file b) built and deployed to the local Tomcat server c) in WEB-INF/classes/knowledge-services.xml, changed the kie:kbase packages attribute to reference "com.acme.drools" d) restarted the webapp 3) Built and deployed KIE WB 6.0.1 (kie-wb-6.0.1.Final-tomcat7) to the local Tomcat server a) applied Tomcat specified configuration according to the README file b) restarted the webapp 4) In KIE WB: a) created a new repository b) created a new organizational unit and attached it to the new repository c) created a project d) in the project I created one guided decision table with one accompanying data model class, all this in the same package "com.acme.drools". The decision table matches the defined class and various attribute values combinations. If there is a match the rule's action is to set a new attribute of the object. e) built and deployed the project to the local Maven repository At this point I can't see any evidence in the logs that the Drools Camel server really picks up the newly created kjar. How do I know if it has? Should I expect it to load the jar? Do I maybe need to configure something more or differently to make the two apps work together? 5) Via the Drools Camel REST API, I then inserted a fact that should trigger the rule created and deployed in 4d+e. Unfortunately, it doesn't. Nothing happens. I can't get this to work. It is obviously something that I don't fully understand when it comes to the interaction between KIE WB and Drools. Does anyone out there have a small example of a working setup of KIE WB and Drools Camel Server __with__ integration of the two through Maven? Regards Roland -- View this message in context: http://drools.46999.n3.nabble.com/How-to-set-up-KIE-WB-Drools-Camel-Serve... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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halting on sub-optimal solution

by nkgxgongxi

Hi everyone, Could anyone help me by providing me some advice on how to make the searching more efficient? I wrote a program based on OptaPlanner to solve a scheduling problem, and I knew the expected optimal solution. My program runs well to keep finding better solution, however, when it comes to a solution which is really close to the optimal one, the program just halts there. I mean, it keeps searching, but can't reach the optimal even after 10hrs of running time. I am currently using tabu search and simulate Annealing to control the local search, and I have tried several different combinations of parameters, but there is no improvement found. I will appreciate your help. Regards, Gong -- View this message in context: http://drools.46999.n3.nabble.com/halting-on-sub-optimal-solution-tp40294... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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OptaPlanner: Solver.isEveryProblemFactChangeProcessed() return true before the last fact change is processed

by Hagai

Using OptaPlanner 6.0.1.Final and following the documentation for real-time planning: "Alternatively, you can subscribe to the BestSolutionChangedEvent. A BestSolutionChangedEvent doesn't guarantee that every ProblemFactChange has been processed already, so check Solver.isEveryProblemFactChangeProcessed() and ignore any BestSolutionChangedEvent fired while that method returns false." However, Solver.isEveryProblemFactChangeProcessed() return true before the last fact change is processed. This is documented in the code DefaultSolver.java: *// TODO bug: the last ProblemFactChange might already been polled, but not processed yet* I believe this can be fixed using the following code in DefaultSolver.checkProblemFactChanges: ProblemFactChange problemFactChange = problemFactChangeQueue*.peek()*; while (problemFactChange != null) { score = doProblemFactChange(problemFactChange); *problemFactChangeQueue.poll();* count++; problemFactChange = problemFactChangeQueue*.peek()*; } This way the queue will not be empty until the fact change is processed. -- View this message in context: http://drools.46999.n3.nabble.com/OptaPlanner-Solver-isEveryProblemFactCh... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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Integrate jBPM with OptaPlanner

by jjn

Hi, how can I integrate jBPM with OptaPlanner. I have solved a problem using OptaPlanner, where there are a number of requests which are optimally assigned to particular employees, based on certain constraints. Now I want to create a dispatcher in jBPM, where certain employees(actors) can solve certain requests(process instances). Any idea how I can go about this problem ? -- View this message in context: http://drools.46999.n3.nabble.com/Integrate-jBPM-with-OptaPlanner-tp40293... Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 10 months

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rules-users May 2014