[jboss-jira] [JBoss JIRA] (JBRULES-3406) Planner: a Solution with a @PlanningEntityCollectionProperty or @PlanningEntityProperty on a method that does not return a planning entity should fail with a decent error message.

[Geoffrey De Smet (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey De Smet updated JBRULES-3406:
--------------------------------------

    Summary: Planner: a Solution with a @PlanningEntityCollectionProperty or @PlanningEntityProperty on a method that does not return a planning entity should fail with a decent error message.  (was: Planner: a Solution without a @PlanningEntityCollectionProperty or @PlanningEntityProperty should fail fast with a decent error message.)

    
> Planner: a Solution with a @PlanningEntityCollectionProperty or @PlanningEntityProperty on a method that does not return a planning entity should fail with a decent error message.
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: JBRULES-3406
>                 URL: https://issues.jboss.org/browse/JBRULES-3406
>             Project: Drools
>          Issue Type: Enhancement
>      Security Level: Public(Everyone can see) 
>          Components: drools-planner
>            Reporter: Geoffrey De Smet
>            Assignee: Geoffrey De Smet
>             Fix For: 5.4.0.CR1
>
>
> "
> I accidently denoted the wrong class with the annotator
> @PlanningEntityCollectionProperty ; a class which was NOT a planning entity.
> Apparently, Drools Planner does not attempt to check for such a possibility,
> hence I get:
> {code}
> Exception in thread "main" java.lang.NullPointerException
> 	at
> org.drools.planner.core.domain.solution.SolutionDescriptor.getAllFacts(SolutionDescriptor.java:135)
> 	at
> org.drools.planner.core.solution.director.DefaultSolutionDirector.getWorkingFacts(DefaultSolutionDirector.java:129)
> 	at
> org.drools.planner.core.solution.director.DefaultSolutionDirector.resetWorkingMemory(DefaultSolutionDirector.java:123)
> 	at
> org.drools.planner.core.solution.director.DefaultSolutionDirector.setWorkingSolution(DefaultSolutionDirector.java:97)
> 	at
> org.drools.planner.core.solver.DefaultSolver.setPlanningProblem(DefaultSolver.java:97)
> 	at in.co.technovia.examduties.ExamDutiesApp.main(ExamDutiesApp.java:47)
> {code}
> Please check for such a possibility in future versions of Drools Planner and
> emit a more meaningful error message.
> "

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