[jboss-jira] [JBoss JIRA] (JBRULES-3406) Planner: a Solution without a @PlanningEntityCollectionProperty or @PlanningEntityProperty should fail fast with a decent error message.

[Geoffrey De Smet (JIRA)]

Geoffrey De Smet created JBRULES-3406:
-----------------------------------------

             Summary: Planner: a Solution without a @PlanningEntityCollectionProperty or @PlanningEntityProperty should fail fast 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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