May 2014 - rules-users - Jboss List Archives

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, 8 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, 8 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, 8 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, 8 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, 8 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, 8 months

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Drools 5.4

by maxynandy

if we have guvnor,we have a additional context (Url for Guvnor related modules). We would like to have a Single Context for our application. 1)Let me know whether any risk is seen in merging the application war and guvnor war. 2)Alternatives for loading the rules dynamically other than using Guvnor. Thanks, maxynandy -- View this message in context: http://drools.46999.n3.nabble.com/Drools-5-4-tp4029407.html Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 8 months

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Question about length windows

by Demian Calcaprina

Hi Guys, I have one question about how lenght windows will work. I have a rule like this. Basically, it is a "crosses" function, where the value of my object crosses a value. rule "mytest" dialect "mvel" when t2_1 : Tick( value < 102.352 ) over window:length (1) t1_1 : Tick( this before t2_1 , value >= 102.352 ) over window:length (2) then //DO SOMETHING end 23:51:32,150 INFO [org.drools.core.audit.WorkingMemoryConsoleLogger] (Camel (camel-1) thread #2 - JmsConsumer[]) ACTIVATION FIRED rule:mytest activationId:berarrr_1 [0, 27, 26] declarations: t2_1=Tick [value=102.351, tickTime=Fri May 02 05:51:31 ART 2014](27); t1_1=Tick [value=102.352, tickTime=Fri May 02 05:51:12 ART 2014](26) 23:53:30,560 INFO [org.drools.core.audit.WorkingMemoryConsoleLogger] (Camel (camel-1) thread #2 - JmsConsumer[]) ACTIVATION CREATED rule:mytest activationId:berarrr_1 [0, 146, 26] declarations: t2_1=Tick [value=102.349, tickTime=Fri May 02 05:53:30 ART 2014](146); t1_1=Tick [value=102.352, tickTime=Fri May 02 05:51:12 ART 2014](26) If you see, the first activation, the window:length(1), matched the object 27 window:length(2), matched the object 26 Then, after 2 minutes and some Ticks insertes in the WM window:length(1), matched the object 146 but window:length(2), still matched the object 26 I would expect, that, as object 26 was the first one to be inserted, then it is outside the window:length(2). Is my understanding correct? Am I making something wrong? I am using Drools 6. Thanks! Demian

11 years, 8 months

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Guvnor 5.3.0 crashing OOM JoinNodeLeftTuple

by JensAlejos＠OAKCORPx4287

Hello, Our Guvnor 5.3.0 is generating an OOM and crashing the server. At the time of the crash we could see lots objects holding a lot of stuff in memory, most notably 23,878,166 org.drools.reteoo.JoinNodeLeftTuple, each of which takes 72 bytes. For 1.7 GB of heap. I believe the real issue is something is going wrong in guvnor that it is creating way to many of these org.drools.reteoo.JoinNodeLeftTuple objects. Do you guys have had this issue? Is this because of a Guvnor guided editor bug? Thanks NOTICE: This message, including any attachments, is intended for the use of the party to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure. If you are not the intended recipient, any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately by reply e-mail, and delete the original and any copies of this message. It is the sole responsibility of the recipient to ensure that this message and any attachments are virus free.

11 years, 8 months

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Rule Orchestration

by swaroop

Hi, Iam using Drools 5.6 , developing rules on guvnor. I have a scenario where i have two decision tables , One is supposed to execute after the other. I want to ensure that DT Two should be executed only after all the executions in DT one happen . Because IN DT Two the list is being checked if set of values are not present, currently when i have two Customer objects in Working memory each having matching rows in Decision Table One .Once the match is found for a customer object then as per the action a Product fact is inserted which leads to fire the DT Two and the list is evaluated if set of d are not present , the rule is fired in DT Two as the list is not populated for the other customer object and matching rows which is being checked in DT Two eval list column. Which is not desired . I tried with salience , ruleflow group with not much of a help Is there a way to can handle this <http://drools.46999.n3.nabble.com/file/n4029371/DTIssue.png> *Decision Table One* Condition Condition Condition Action c:Customer a==$param b in ($param) c == $param "list(Global Variable).add(d); insert(Product())" *Decision Table Two* Condition Condition Condition Action p:Product a==$param eval(list doesnt not contain ($param)) c == $param response.setMessage($param); Regards Oggu -- View this message in context: http://drools.46999.n3.nabble.com/Rule-Orchestration-tp4029371.html Sent from the Drools: User forum mailing list archive at Nabble.com.

11 years, 8 months

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rules-users May 2014