[rules-users] Best Solution found but latest solution does not work

[moltenice]

Oh, I actually decided to implement my own cloning methods because without
them FULL_ASSERT gave me the following error:

14:46:41.601 [main] INFO  o.o.core.impl.solver.DefaultSolver - Solving
started: time spend (7), score (-1hard/0soft), new best score
(-1hard/0soft), random seed (0).
14:46:41.620 [main] INFO  o.o.c.i.c.DefaultConstructionHeuristicSolverPhase
- Phase (0) constructionHeuristic ended: step total (0), time spend (28),
best score (-1hard/0soft).
14:46:41.798 [main] DEBUG o.o.c.i.l.DefaultLocalSearchSolverPhase -     Step
index (0), time spend (207), score (-1hard/0soft),     best score
(-1hard/0soft), accepted/selected move count (1000/1000) for picked step
(TimetableSlot at 44c099ef => Thomas).
14:46:41.947 [main] DEBUG o.o.c.i.l.DefaultLocalSearchSolverPhase -     Step
index (1), time spend (356), score (-1hard/0soft),     best score
(-1hard/0soft), accepted/selected move count (1000/1889) for picked step
(TimetableSlot at 5289178b => Thomas).
14:46:42.092 [main] DEBUG o.o.c.i.l.DefaultLocalSearchSolverPhase -     Step
index (2), time spend (501), score (0hard/0soft), new best score
(0hard/0soft), accepted/selected move count (1000/2869) for picked step
(TimetableSlot at c7b2b3e => Thomas).
Exception in thread "main" java.lang.IllegalStateException: Score
corruption: the solution's score (0hard/0soft) is not the uncorruptedScore
(-1hard/0soft).
	at
org.optaplanner.core.impl.score.director.AbstractScoreDirectorFactory.assertScoreFromScratch(AbstractScoreDirectorFactory.java:75)
	at
org.optaplanner.core.impl.solver.scope.DefaultSolverScope.assertScoreFromScratch(DefaultSolverScope.java:113)
	at
org.optaplanner.core.impl.bestsolution.BestSolutionRecaller.stepEnded(BestSolutionRecaller.java:90)
	at
org.optaplanner.core.impl.phase.AbstractSolverPhase.stepEnded(AbstractSolverPhase.java:93)
	at
org.optaplanner.core.impl.localsearch.DefaultLocalSearchSolverPhase.stepEnded(DefaultLocalSearchSolverPhase.java:126)
	at
org.optaplanner.core.impl.localsearch.DefaultLocalSearchSolverPhase.solve(DefaultLocalSearchSolverPhase.java:83)
	at
org.optaplanner.core.impl.solver.DefaultSolver.runSolverPhases(DefaultSolver.java:190)
	at
org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:155)
	at Main.main(Main.java:29)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)


Also, thanks for pointing me to the doc on cloning, I have tried to
implement it as follows but now it doesn't seem to be able to update the
values and just runs without changing original inputted solution until
timelimit:
My Solution's clone:
    @Override
    public Timetable planningClone() {
        TimetableSlot[][] clonedTimetableSlotArray = new
TimetableSlot[Constants.TIME_SLOTS][Constants.NUMBER_OF_STUDENTS];
        for (int i = 0; i < Constants.TIME_SLOTS; i++) {
            for (int j = 0; j < Constants.NUMBER_OF_STUDENTS; j++) {
                try {
                    clonedTimetableSlotArray[i][j] = (TimetableSlot)
this.timetable[i][j].clone();
                } catch (CloneNotSupportedException e) {
                    e.printStackTrace();
                }
            }
        }

        Timetable clonedTimetable = new Timetable(clonedTimetableSlotArray);
        clonedTimetable.setScore(this.getScore());
        return clonedTimetable;
    }


My Solution's Entity Collection:
    @PlanningEntityCollectionProperty
    public Collection<TimetableSlot> getListOfTimetableSlots() {
        Collection<TimetableSlot> timetableSlotCollection = new
ArrayList<TimetableSlot>();

        for (int i = 0; i < Constants.TIME_SLOTS; i++) {
            for (int j = 0; j < Constants.NUMBER_OF_STUDENTS; j++) {
                try {
                    timetableSlotCollection.add((TimetableSlot)
timetable[i][j].clone());
                } catch (CloneNotSupportedException e) {
                    e.printStackTrace();
                }
            }
        }

        return timetableSlotCollection;
    }


My Planning entity's clone:
    @Override
    protected Object clone() throws CloneNotSupportedException {
        return new TimetableSlot(this.timeSlot, this.student,
this.getLecturer());
    }

this.getLecturer() ensures that the Lecturer planning variable IS NOT
cloned. Both timeSlot and student are int.

I think I have met the requirements set out when doing custom cloning as
specified in the documentation.

I am still stumped as to what the problem is, I hope I've provided more
insight.

Thanks,
Karan



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