[jboss-jira] [JBoss JIRA] (JBRULES-3265) Planner crashes with NoSuchElementException in PlanningValueWalker

[Geoffrey De Smet (Resolved) (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey De Smet resolved JBRULES-3265.
---------------------------------------

    Fix Version/s: 5.4.0.Beta1
       Resolution: Done

    
> Planner crashes with NoSuchElementException in PlanningValueWalker
> ------------------------------------------------------------------
>
>                 Key: JBRULES-3265
>                 URL: https://issues.jboss.org/browse/JBRULES-3265
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-planner
>            Reporter: Geoffrey De Smet
>            Assignee: Geoffrey De Smet
>            Priority: Minor
>             Fix For: 5.4.0.Beta1
>
>
> "
> After debugging, seems like cachedPlanningValues in PlanningValueCreator is
> being created as an empty collection and when PlanningValueWalker gets
> cachedPlanningValues's iterator and tries to iterate through it then it gets
> a  NoSuchElementException. I am a little confused as to when the
> extractPlanningValues method is called in PlanningValueSelector to get a
> collection of planned values a null is begin passed in instead of a planning
> entity which is responsible for the empty cachedPlanningValues collection.
> "
> {code}
> java.util.NoSuchElementException
> 	at java.util.AbstractList$SimpleListIterator.next(AbstractList.java:61)
> 	at
> org.drools.planner.core.heuristic.selector.variable.PlanningValueWalker.initWalk(PlanningValueWalker.java:90)
> 	at
> org.drools.planner.core.heuristic.selector.variable.PlanningVariableWalker.initWalk(PlanningVariableWalker.java:104)
> 	at
> org.drools.planner.core.constructionheuristic.greedyFit.decider.DefaultGreedyDecider.decideNextStep(DefaultGreedyDecider.java:58)
> 	at
> org.drools.planner.core.constructionheuristic.greedyFit.DefaultGreedyFitSolverPhase.solve(DefaultGreedyFitSolverPhase.java:62)
> 	at
> org.drools.planner.core.solver.DefaultSolver.runSolverPhases(DefaultSolver.java:166)
> 	at
> org.drools.planner.core.solver.DefaultSolver.solve(DefaultSolver.java:138)
> {code}

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