[rules-users] [planner] The presumed score is corrupted

[Geoffrey De Smet]

A corrupted score normally indicates a problem with the Move 
implementation (or sometimes the score drl).

Basically this happened: for a number of moves, it did the move, 
calculated the score and undo the move.
One of those move was associated with a score -10hard/0soft, that was 
the best one.
Now, it does that move (which is now called the "step") and when it 
calculates the score it's a different score 0hard/0soft.

Try TRACE environment and see if it crashes sooner. Copy paste your Move 
implementation here.
In Planner 5.4 there will be 2 out-of-the-box Move implementations to 
use, so writing Move's become optional.

Op 13-10-11 16:37, Guilherme Kunigami schreef:
> Hi,
>
> I've implemented a very simple application using drools planner 
> consisting of a bunch of activities. My rule file is very simple too 
> and just counts the number of activities not assigned. When I run 
> Solver.solve(), I get the following error message:
>
> Exception in thread "AWT-EventQueue-0" 
> java.lang.IllegalStateException: The presumedScore (-10hard/0soft) is 
> corrupted because it is not the realScore  (0hard/0soft).
>
> Presumed workingMemory:
>   Score rule (remainingActivitiesCount) has count (1) and weight total 
> (11).
> Real workingMemory:
>   Score rule (remainingActivitiesCount) has count (1) and weight total 
> (0).
>
> I've tracked down this message and found this piece of code 
> @DefaultLocalSearchSolver.solveImplementation():
>
> // there is no need to recalculate the score, but we still need to set it
> localSearchSolverScope.getWorkingSolution().setScore(localSearchStepScope.getScore());
> if (assertStepScoreIsUncorrupted) {
>     
> localSearchSolverScope.assertWorkingScore(localSearchStepScope.getScore());
> }
>
> It seems that the working score is never updated along the algorithm, 
> but the score in the working memory changes. Thus, when we use the 
> DEBUG environment, assertStepScoreIsUncorrupted is turned on and the 
> assertion fails.
>
> Should the score be updated or am I using the library incorrectly?
>
> Thanks,
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users

-- 
With kind regards,
Geoffrey De Smet

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20111014/ffacbb49/attachment.html