protected Solution buildAndSolve(
SolverFactory solverFactory,
EnvironmentMode environmentMode,
Solution planningProblem,
long maximumMinutesSpend) {
solverFactory
.getSolverConfig()
.getTerminationConfig()
.setMaximumMinutesSpend(maximumMinutesSpend);
SolverConfig solverConfig = solverFactory.getSolverConfig();
solverConfig.setEnvironmentMode(environmentMode);
ScoreDirectorFactoryConfig assertionScoreDirectorFactory =
createOverwritingAssertionScoreDirectorFactory();
if (assertionScoreDirectorFactory != null && environmentMode.isAsserted()) {
solverConfig
.getScoreDirectorFactoryConfig()
.setAssertionScoreDirectorFactory(assertionScoreDirectorFactory);
}
Solver solver = solverFactory.buildSolver();
solver.setPlanningProblem(planningProblem);
solver.solve();
Solution bestSolution = solver.getBestSolution();
if (bestSolution == null) {
// Solver didn't make it past initialization // TODO remove me once getBestSolution() never
// returns null
bestSolution = planningProblem;
}
return bestSolution;
}
protected SolverFactory buildSolverFactory() {
SolverFactory solverFactory = new XmlSolverFactory(createSolverConfigResource());
TerminationConfig terminationConfig = new TerminationConfig();
// buildAndSolve() fills in maximumMinutesSpend
solverFactory.getSolverConfig().setTerminationConfig(terminationConfig);
return solverFactory;
}
@Test
public void trackLocalSearch() {
SolverFactory<NQueens> solverFactory =
SolverFactory.createFromXmlResource(NQueensApp.SOLVER_CONFIG);
SolverConfig solverConfig = solverFactory.getSolverConfig();
NQueensGenerator generator = new NQueensGenerator();
NQueens planningProblem = NQueensSolutionInitializer.initialize(generator.createNQueens(N));
LocalSearchPhaseConfig localSearchPhaseConfig = new LocalSearchPhaseConfig();
localSearchPhaseConfig.setAcceptorConfig(acceptorConfig);
localSearchPhaseConfig.setForagerConfig(localSearchForagerConfig);
localSearchPhaseConfig.getForagerConfig().setBreakTieRandomly(false);
localSearchPhaseConfig.setMoveSelectorConfig(new ChangeMoveSelectorConfig());
localSearchPhaseConfig.getMoveSelectorConfig().setSelectionOrder(SelectionOrder.ORIGINAL);
localSearchPhaseConfig.setTerminationConfig(new TerminationConfig());
localSearchPhaseConfig.getTerminationConfig().setStepCountLimit(20);
solverConfig.getPhaseConfigList().set(1, localSearchPhaseConfig);
NQueensStepTracker listener = new NQueensStepTracker();
DefaultSolver<NQueens> solver = (DefaultSolver<NQueens>) solverFactory.buildSolver();
solver.addPhaseLifecycleListener(listener);
NQueens bestSolution = solver.solve(planningProblem);
assertNotNull(bestSolution);
assertTrackingList(expectedCoordinates, listener.getTrackingList());
}
protected SolverFactory buildSolverFactory() {
SolverFactory solverFactory = SolverFactory.createFromXmlResource(createSolverConfigResource());
SolverConfig solverConfig = solverFactory.getSolverConfig();
solverConfig.setTerminationConfig(new TerminationConfig());
ConstructionHeuristicPhaseConfig constructionHeuristicPhaseConfig =
new ConstructionHeuristicPhaseConfig();
constructionHeuristicPhaseConfig.setConstructionHeuristicType(constructionHeuristicType);
solverConfig.setPhaseConfigList(Arrays.<PhaseConfig>asList(constructionHeuristicPhaseConfig));
return solverFactory;
}
@Override
protected SolverFactory<Solution_> buildSolverFactory() {
SolverFactory<Solution_> solverFactory =
SolverFactory.createFromXmlResource(createSolverConfigResource());
SolverConfig solverConfig = solverFactory.getSolverConfig();
solverConfig.setTerminationConfig(new TerminationConfig());
ExhaustiveSearchPhaseConfig exhaustiveSearchPhaseConfig = new ExhaustiveSearchPhaseConfig();
exhaustiveSearchPhaseConfig.setExhaustiveSearchType(exhaustiveSearchType);
solverConfig.setPhaseConfigList(Arrays.asList(exhaustiveSearchPhaseConfig));
return solverFactory;
}