我正在使用 VRP 問題示例并進行一些更改。一是計算所有任務的到達和目的地時間。另一個是某些任務對必須具有相同的到達時間。更新到達時間后，我“移動”并行任務 - 并更改它們的日期。因此移動步驟可以改變另一輛車上任務的影子變量。但是，驗證兩個任務的到達是否相同的 drools 規則并沒有看到這種變化。就像他們根本沒有改變對象一樣。我究竟做錯了什么？也許我的做法是錯誤的？并行任務未標記為 ShadowVaraible 或 PlanningVariable。聽眾：public class ArrivalTimeUpdatingVariableListener implements VariableListener<Task> {    @Override    public void afterEntityAdded(ScoreDirector scoreDirector, Task task) {        updateTaskAssignmentTimes(scoreDirector);    }    @Override    public void afterVariableChanged(ScoreDirector scoreDirector, Task task) {        updateTaskAssignmentTimes(scoreDirector);    }    (...)    scoreDirector.beforeVariableChanged(task, "arrivalTime");    task.setArrivalTime(task.getArrivalTime() + diff);    scoreDirector.afterVariableChanged(task, "arrivalTime");    (...)}任務：@PlanningEntity(difficultyWeightFactoryClass = DepotAngleTaskDifficultyWeightFactory.class)public class Task extends AbstractPersistable implements Standstill {    (...)    @CustomShadowVariable(variableListenerClass = ArrivalTimeUpdatingVariableListener.class, sources = {@PlanningVariableReference(variableName = "previousStandstill")})    private Long arrivalTime;    @CustomShadowVariable(variableListenerClass = ArrivalTimeUpdatingVariableListener.class, sources = {@PlanningVariableReference(variableName = "previousStandstill")})    private Long departureTime;    (...)}博士升：rule "Parallel task soft relation"when    $task : Task(assigned, relations.tasksParallel.size() > 0, $tasksParallel : relations.tasksParallel)    Task(assigned, $tasksParallel.contains(id), doesNotHaveSameArrivalTime($task))then    scoreHolder.addHardConstraintMatch(kcontext, -1088);end