Re: [rules-users] CurriculumCourse - extending for multiple teachers per course
On 22-11-13 23:38, clients wrote: Hi, I have been playing around with the optaplanner library for the past couple of weeks trying to learn a bit of the basics. I have been making some progress but I have a simple variation I am trying to accomplish to the stock CurriculumCourse example and am hitting a wall. What I am trying to do is modify the CurriculumCourse example to also allow the teachers to be planning variables. I plan on extending it to give constraints on which courses individual teachers can teach, but to start I am just assuming each teacher can teach any class to make things easier. - First I tried to add the Course entity as a second planning entity with the teacher being a PlanningVariable but keep on running into an exception based on the solver configuration java.lang.IllegalArgumentException: The entityPlacerConfig (QueuedEntityPlacerConfig(null, null)) has no entitySelector configured and because there are multiple in the planningEntityClassSet ([class org.optaplanner.examples.curriculumcourse.domain.Lecture, class org.optaplanner.examples.curriculumcourse.domain.Course]), it can not be deducted automatically. at org.optaplanner.core.config.constructionheuristic.placer.EntityPlacerConfig.deduceEntityDescriptor(EntityPlacerConfig.java:43) That's inside the construction heuristic configuration. An entitySelector gets automatically generated there and because there are multiple entities, it doesn't know which one you mean. I haven't documented yet how you can customize the CH configuration, but here are some tips: Follow the rabit hole down from ConstructionHeuristicSolverPhaseConfig and QueuedEntityPlacerConfig. The configuration looks something like this: constructionHeuristic queuedEntityPlacer entitySelector id="a"/ changeMoveSelector mimicEntitySelector refId="a"/ valueSelector /changeMoveSelector /queuedEntityPlacer /constructionHeuristic Note: the mimic part is documented already. Seeing that you have 2 planning entitie classes, you can add 2 constructionHeuristic elements, and change the entitySelector for each entity class. I can't seem to figure out where the entitySelector is missing or what the entityPlacer is used for or where it is configured. I have read that multiple planning entities are possible, but can't determine how to get this *simple* example to work. - Second I tried to see if i could move the teacher planning variable to the Lecture planningEntity, but cant figure out a way to keep all of the lectures of one course stuck with the same teacher. I dont believe I can change other planning entities on my own when one is updated. I am still new to looking at these problems and determining the best model to fit it, so hoping someone might have some tips/help on how to handle this scenario. Thanks in advanced, -- View this message in context: http://drools.46999.n3.nabble.com/CurriculumCourse-extending-for-multiple-teachers-per-course-tp4026896.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] SolutionInitializer for Nullable Planning Variable
Are you using 6.0.0.Final? There was a bug with nullable variables and CH's in 6.0.0.CR5 and earlier. On 24-11-13 03:20, newbie wrote: I created a custom solver which assign planning variables to planning entities. I have a simple rule checking if there are no assign variable that adds negative soft constraint. But when I assigned my planning variable it increases the negative score instead of reducing it. I have for example 12 entities and my starting score was 0/-12.But when I initialized it with 4 variables it increases to 0/-16. rule null variable when $myEntity : Entity( variable == null ) then scoreHolder.addSoftConstraintMatch(kcontext, 0, -1); end -- View this message in context: http://drools.46999.n3.nabble.com/SolutionInitializer-for-Nullable-Planning-Variable-tp4026901.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] SolutionInitializer for Nullable Planning Variable
Yes I am using now the latest version 6.0.0.Final. -- View this message in context: http://drools.46999.n3.nabble.com/SolutionInitializer-for-Nullable-Planning-Variable-tp4026901p4026905.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] SolutionInitializer for Nullable Planning Variable
In that case, can you create a new jira and attach any way I can reproduce the issue locally? https://issues.jboss.org/browse/PLANNER On 24-11-13 14:50, newbie wrote: Yes I am using now the latest version 6.0.0.Final. -- View this message in context: http://drools.46999.n3.nabble.com/SolutionInitializer-for-Nullable-Planning-Variable-tp4026901p4026905.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools Problems
Hi All, I have deployed the rest service in Tomcat 7. When I am hitting the resource through browser; resulting is coming. But when I am sending continuous hit for the resource through CTRL+F5 or through Apache J Meter; it is throwing Exception: Some errors exists in packageBuilder [DialectError message='Unable to wire compiled classes, probably related to compilation failures:null'] Or some times - Some errors exists in packageBuilder [DialectError message='Unable to wire compiled classes, probably related to compilation failures:JavaDialect '] But when I added core-3.4.2.v_883_R34x.jar in the class path; first error message come up frequently. I am using DroolsInitializer java class where different way of executing rules method is written. I am also using some of your method; where in both cases same exception is coming up. Please look on this. Love Kumar Shorav Subject.drl Description: Subject.drl DroolInitialiser.java Description: DroolInitialiser.java ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
