@Override
public void stepEnded(AbstractStepScope stepScope) {
if (stepScope.isBestSolutionCloningDelayed()) {
return;
}
AbstractSolverPhaseScope phaseScope = stepScope.getPhaseScope();
int uninitializedVariableCount = stepScope.getUninitializedVariableCount();
Score score = stepScope.getScore();
DefaultSolverScope solverScope = phaseScope.getSolverScope();
int bestUninitializedVariableCount = solverScope.getBestUninitializedVariableCount();
Score bestScore = solverScope.getBestScore();
boolean bestScoreImproved;
if (uninitializedVariableCount == bestUninitializedVariableCount) {
bestScoreImproved = score.compareTo(bestScore) > 0;
} else {
bestScoreImproved = uninitializedVariableCount < bestUninitializedVariableCount;
}
stepScope.setBestScoreImproved(bestScoreImproved);
if (bestScoreImproved) {
phaseScope.setBestSolutionStepIndex(stepScope.getStepIndex());
Solution newBestSolution = stepScope.createOrGetClonedSolution();
updateBestSolution(solverScope, newBestSolution, uninitializedVariableCount);
} else if (assertBestScoreIsUnmodified) {
solverScope.assertScoreFromScratch(solverScope.getBestSolution());
}
}
public void processWorkingSolutionDuringMove(
int uninitializedVariableCount, Score score, AbstractStepScope stepScope) {
AbstractSolverPhaseScope phaseScope = stepScope.getPhaseScope();
DefaultSolverScope solverScope = phaseScope.getSolverScope();
int bestUninitializedVariableCount = solverScope.getBestUninitializedVariableCount();
Score bestScore = solverScope.getBestScore();
boolean bestScoreImproved;
if (uninitializedVariableCount == bestUninitializedVariableCount) {
bestScoreImproved = score.compareTo(bestScore) > 0;
} else {
bestScoreImproved = uninitializedVariableCount < bestUninitializedVariableCount;
}
// The method processWorkingSolutionDuringMove() is called 0..* times
// bestScoreImproved is initialized on false before the first call here
if (bestScoreImproved) {
stepScope.setBestScoreImproved(bestScoreImproved);
}
if (bestScoreImproved) {
phaseScope.setBestSolutionStepIndex(stepScope.getStepIndex());
Solution newBestSolution = solverScope.getScoreDirector().cloneWorkingSolution();
updateBestSolution(solverScope, newBestSolution, uninitializedVariableCount);
} else if (assertBestScoreIsUnmodified) {
solverScope.assertScoreFromScratch(solverScope.getBestSolution());
}
}
public void solvingStarted(DefaultSolverScope solverScope) {
if (solverScope.getBestSolution() == null) {
throw new IllegalStateException(
"The planningProblem must not be null." + " Use Solver.setPlanningProblem(Solution).");
}
solverScope.setStartingSystemTimeMillis(System.currentTimeMillis());
solverScope.setScoreDirector(scoreDirectorFactory.buildScoreDirector());
solverScope.setWorkingRandom(randomFactory.createRandom());
solverScope.setWorkingSolutionFromBestSolution();
bestSolutionRecaller.solvingStarted(solverScope);
for (SolverPhase solverPhase : solverPhaseList) {
solverPhase.solvingStarted(solverScope);
}
logger.info(
"Solving started: time spend ({}), score ({}), new best score ({}), random ({}).",
solverScope.calculateTimeMillisSpend(),
solverScope.getStartingInitializedScore(),
solverScope.getBestScore(),
(randomFactory != null ? randomFactory : "not fixed"));
}