Examples of org.drools.planner.core.solution.Solution

Package org.drools.planner.core.solution

Examples of org.drools.planner.core.solution.Solution

org.drools.planner.core.solution.Solution
A Solution represents a problem and a possible solution of that problem. A possible solution does not need to optimal or even feasible. A Solution does not even have to be initialized with a possible solution.
A Solution is mutable. Drools Planner will continuously modify the same solution for scalability reasons and clone it to recall the best solution.

        Solution solution = importer.readSolution(file);
        guiScoreDirector.setWorkingSolution(solution);
    }


    public void openSolution(File file) {
        Solution solution = solutionDao.readSolution(file);
        guiScoreDirector.setWorkingSolution(solution);
    }

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        Solution solution = solutionDao.readSolution(file);
        guiScoreDirector.setWorkingSolution(solution);
    }


    public void saveSolution(File file) {
        Solution solution = guiScoreDirector.getWorkingSolution();
        solutionDao.writeSolution(solution, file);
    }

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        Solution solution = guiScoreDirector.getWorkingSolution();
        solutionDao.writeSolution(solution, file);
    }


    public void exportSolution(File file) {
        Solution solution = guiScoreDirector.getWorkingSolution();
        exporter.writeSolution(solution, file);
    }

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        Score bestScore = localSearchSolverScope.getBestScore();
        if (newScore.compareTo(bestScore) > 0) {
            logger.info("New score ({}) is better then last best score ({}). Updating best solution and best score.",
                    newScore, bestScore);
            localSearchSolverScope.setBestSolutionStepIndex(stepScope.getStepIndex());
            Solution newBestSolution = stepScope.createOrGetClonedSolution();
            localSearchSolverScope.setBestSolution(newBestSolution);
            localSearchSolverScope.setBestScore(newBestSolution.getScore());
            solverEventSupport.fireBestSolutionChanged(newBestSolution);
        } else {
            logger.info("New score ({}) is not better then last best score ({}).", newScore, bestScore);
        }
    }

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        Map<File, SolverStatistic> unsolvedSolutionFileToStatisticMap = new LinkedHashMap<File, SolverStatistic>();
        for (SolverBenchmark solverBenchmark : solverBenchmarkList) {
            Solver solver = solverBenchmark.getLocalSearchSolverConfig().buildSolver();
            for (SolverBenchmarkResult result : solverBenchmark.getSolverBenchmarkResultList()) {
                File unsolvedSolutionFile = result.getUnsolvedSolutionFile();
                Solution unsolvedSolution = readUnsolvedSolution(xStream, unsolvedSolutionFile);
                solver.setStartingSolution(unsolvedSolution);
                if (solverStatisticType != SolverStatisticType.NONE) {
                    SolverStatistic statistic = unsolvedSolutionFileToStatisticMap.get(unsolvedSolutionFile);
                    if (statistic == null) {
                        statistic = solverStatisticType.create();
                        unsolvedSolutionFileToStatisticMap.put(unsolvedSolutionFile, statistic);
                    }
                    statistic.addListener(solver, solverBenchmark.getName());
                }
                solver.solve();
                result.setTimeMillisSpend(solver.getTimeMillisSpend());
                Solution solvedSolution = solver.getBestSolution();
                result.setScore(solvedSolution.getScore());
                if (solverStatisticType != SolverStatisticType.NONE) {
                    SolverStatistic statistic = unsolvedSolutionFileToStatisticMap.get(unsolvedSolutionFile);
                    statistic.removeListener(solver, solverBenchmark.getName());
                }
                writeSolvedSolution(xStream, solverBenchmark, result, solvedSolution);

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        }
        benchmarkingEnded(xStream, unsolvedSolutionFileToStatisticMap);
    }


    private Solution readUnsolvedSolution(XStream xStream, File unsolvedSolutionFile) {
        Solution unsolvedSolution;
        Reader reader = null;
        try {
            reader = new InputStreamReader(new FileInputStream(unsolvedSolutionFile), "utf-8");
            unsolvedSolution = (Solution) xStream.fromXML(reader);
        } catch (IOException e) {

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        solverFactory.getSolverConfig().setTerminationConfig(terminationConfig);
        return solverFactory;
    }


    private Solver solve(XmlSolverFactory solverFactory, File unsolvedDataFile) {
        Solution planningProblem = solutionDao.readSolution(unsolvedDataFile);
        Solver solver = solverFactory.buildSolver();
        solver.setPlanningProblem(planningProblem);
        solver.solve();
        return solver;
    }

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        solver.solve();
        return solver;
    }


    private void assertBestSolution(Solver solver, String scoreAttainedString) {
        Solution bestSolution = solver.getBestSolution();
        assertNotNull(bestSolution);
        Score bestScore = bestSolution.getScore();
        Score scoreAttained = solver.getScoreDirectorFactory().getScoreDefinition().parseScore(scoreAttainedString);
        assertTrue("The bestScore (" + bestScore + ") must be at least scoreAttained (" + scoreAttained + ").",
                bestScore.compareTo(scoreAttained) >= 0);
    }

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        return configurer;
    }


    private Solver solve(XmlSolverConfigurer configurer, File unsolvedDataFile) {
        SolutionDao solutionDao = createSolutionDao();
        Solution startingSolution = solutionDao.readSolution(unsolvedDataFile);
        Solver solver = configurer.buildSolver();
        solver.setStartingSolution(startingSolution);
        solver.solve();
        return solver;
    }

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        solver.solve();
        return solver;
    }


    private void assertBestSolution(Solver solver, String scoreAttainedString) {
        Solution bestSolution = solver.getBestSolution();
        assertNotNull(bestSolution);
        Score bestScore = bestSolution.getScore();
        Score scoreAttained = solver.getScoreDefinition().parseScore(scoreAttainedString);
        assertTrue("The bestScore (" + bestScore + ") must be at least scoreAttained (" + scoreAttained + ").",
                bestScore.compareTo(scoreAttained) >= 0);
    }

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org.drools.planner.benchmark.core.ProblemBenchmark

org.drools.planner.benchmark.core.SingleBenchmark

org.drools.planner.benchmark.core.XStreamProblemIO

org.drools.planner.benchmark.SolverBenchmarkSuite

org.drools.planner.core.bestsolution.BestSolutionRecaller

org.drools.planner.core.localsearch.bestsolution.BestSolutionRecaller

org.drools.planner.core.move.generic.GenericChainedChangeMoveFactory

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org.drools.planner.core.phase.AbstractSolverPhase

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