Drools, and hence I assume Planner, *should* handle boolean "is" accessor. Can you provide more details?
sent on the move
On 30 Jan 2012 07:05, "aitchnyu" <jesvinj@technovia.co.in> wrote:
I have news for you!
I had an obvious and (bad surprise) buggy mismatch.
The obvious mismatch was: setBlockList and getBlocklist (small 'l' in the
getter).
The other mismatch was isFixed and setFixed. *Drools hates the 'is'* because
(as I guessed) of it's introspector mechanism. It worked only when I renamed
it to getFixed. Your bugfix would have harmed instead of helped, as it would
have let that error pass silently.
Please open an issue to address this.
Wish I wasnt religious to name boolean getters with 'is'. I will notify of
further problems once the problem gets back on track.
ge0ffrey wrote
>
> Hi,
>
> The NullPointerException should definitely not happen, you should get a
> decent error message describing what's wrong.
> It's fixed in 5.4.0.Beta1.
>
> It looks like you're running into:
> https://issues.jboss.org/browse/JBRULES-3247
> Upgrade to planner 5.4.0.Beta1
> or add a getter for that setter.
>
> Op 28-01-12 06:17, aitchnyu schreef:
>> I tried to create a solver from XML configuration. But the entire process
>> returns a *cryptic error message *that makes no sense.
>>
>> How do I fix this? And how can I make sense of this to actually solve
>> similar problems like this?
>>
>> Please excuse me if I made any bad karma. This is my first post on this
>> (and
>> any) mailing list.
>>
>> jesvin@Jesvin-Technovia:~/dev/drools/sudoku$ java App
>> Exception in thread "main" java.lang.NullPointerException
>> at
>> org.drools.planner.core.domain.solution.SolutionDescriptor.processPropertyAnnotations(SolutionDescriptor.java:69)
>> at
>> org.drools.planner.core.domain.solution.SolutionDescriptor.<init>(SolutionDescriptor.java:61)
>> at
>> org.drools.planner.config.solver.SolverConfig.buildSolutionDescriptor(SolverConfig.java:197)
>> at
>> org.drools.planner.config.solver.SolverConfig.buildSolver(SolverConfig.java:167)
>> at
>> org.drools.planner.config.XmlSolverConfigurer.buildSolver(XmlSolverConfigurer.java:103)
>> at App.createSolver(App.java:62)
>> at App.main(App.java:40)
>>
>> The function that throws it is listed here. The line is of course `return
>> configurer.buildSolver();`.
>>
>> private static Solver createSolver(){
>> XmlSolverConfigurer configurer = new XmlSolverConfigurer();
>> File file = new File("solver.xml");
>> FileInputStream fin = null;
>> try{
>> fin = new FileInputStream(file);
>> }
>> catch(IOException e){
>> System.out.println("Unable to read drl");
>> }
>> configurer.configure(fin);
>>
>> //configurer.configure("/home/jesvin/dev/drools/sudoku/solver.xml");
>> return configurer.buildSolver();
>> }
>>
>> The content of the XML:
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <solver>
>> <environmentMode>DEBUG</environmentMode>
>>
>> <solutionClass>domain.Sudoku</solutionClass>
>> <planningEntityClass>domain.Digit</planningEntityClass>
>> <scoreDrl>score.drl</scoreDrl>
>> <scoreDefinition>
>> <scoreDefinitionType>SIMPLE</scoreDefinitionType>
>> </scoreDefinition>
>>
>> <termination>
>> <scoreAttained>0</scoreAttained>
>> </termination>
>>
>> <constructionHeuristic>
>> <constructionHeuristicType>FIRST_FIT</constructionHeuristicType>
>>
>>
>> <moveFactoryClass>solution.RowChangeMoveFactory</moveFactoryClass>
>> </selector>
>> <acceptor>
>> <completeSolutionTabuSize>1000</completeSolutionTabuSize>
>> </acceptor>
>> <forager>
>>
>> </forager>
>> </localSearch>
>> </solver>
>>
>> --
>> View this message in context:
>> http://drools.46999.n3.nabble.com/Planner-has-trouble-creating-a-configurer-how-to-debug-tp3695307p3695307.html
>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>> _______________________________________________
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>> rules-users@.jboss
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
> --
> With kind regards,
> Geoffrey De Smet
>
>
> _______________________________________________
> rules-users mailing list
> rules-users@.jboss
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
View this message in context: http://drools.46999.n3.nabble.com/Planner-has-trouble-creating-a-configurer-how-to-debug-tp3695307p3699291.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
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