Java 尝试在Optaplanner中为分数添加值（使用Drools）

我有一个非常简单（可能太简单）的规则，我想在Drools中强制执行，以便在Optaplanner中为我的硬分数添加一个值。 基本上，在我的解决方案类

TaskAssignment

中，我生成了一个

taskConflictList

，每当出现冲突时，它就会添加到

taskConflictLog

：

public List<TaskConflict> calculateTaskConflictList(){
   List<TaskConflict> taskConflictList=new ArrayList<TaskConflict>();
   taskConflictLog=0;
    for(Task leftTask:taskList){
        for(Task rightTask:taskList){
            if(leftTask.solutionEquals(rightTask)==!true){
                if(leftTask.getAssignedDevAsString().equals(rightTask.getAssignedDevAsString())){
                if((rightTask.getAllottedStartTime()<=leftTask.getAllottedStartTime()) //long bit of code here....//){
                    taskConflictList.add(new TaskConflict(leftTask,rightTask));
                    taskConflictLog++;
                }
                }
            }
        }
    }
    return taskConflictList;       
   }

但我收到一条错误消息，

$tCL无法解析为变量

---

这感觉是一件很容易的事情，但由于某种原因，我无法集中注意力。在示例中，查找以参数化结尾的类，例如在数据集中的考试排班中：

public class InstitutionParametrization extends AbstractPersistable { // SINGLETON per Solution

    private int twoInARowPenalty;
    private int twoInADayPenalty;
    private int periodSpreadLength;
    private int periodSpreadPenalty;
    private int mixedDurationPenalty;
    private int frontLoadLargeTopicSize;
    private int frontLoadLastPeriodSize;
    private int frontLoadPenalty;

    ...
}

然后在DRL中：

rule "twoExamsInADay"
    when
        $institutionParametrization : InstitutionParametrization(twoInADayPenalty != 0)
        $topicConflict : TopicConflict($leftTopic : leftTopic, $rightTopic : rightTopic)
        $leftExam : Exam(topic == $leftTopic, $leftDayIndex : dayIndex, $leftPeriodIndex : periodIndex, period != null)
        $rightExam : Exam(topic == $rightTopic, dayIndex == $leftDayIndex,
            Math.abs($leftPeriodIndex - periodIndex) > 1)
    then
        scoreHolder.addSoftConstraintMatch(kcontext,
                $topicConflict.getStudentSize() * (- $institutionParametrization.getTwoInADayPenalty()));
end

// Exams which share students have to few periods between them
rule "periodSpread"
    when
        $institutionParametrization : InstitutionParametrization(periodSpreadPenalty != 0)
        ...
    then
        scoreHolder.addSoftConstraintMatch(kcontext,
                ... * (- $institutionParametrization.getPeriodSpreadPenalty()));
end

---

这是您得到的唯一错误吗？-在你的类中是否有一个

public int gettaskconfig（）

任务分配？我将在一周或两周内制作一个关于用户玩参数化对象的视频，并将其发布到G+/twitter。你制作了关于使用参数化对象的视频吗？是的，请参阅考试视频，optaplanner.org->learn->video's。

rule "twoExamsInADay"
    when
        $institutionParametrization : InstitutionParametrization(twoInADayPenalty != 0)
        $topicConflict : TopicConflict($leftTopic : leftTopic, $rightTopic : rightTopic)
        $leftExam : Exam(topic == $leftTopic, $leftDayIndex : dayIndex, $leftPeriodIndex : periodIndex, period != null)
        $rightExam : Exam(topic == $rightTopic, dayIndex == $leftDayIndex,
            Math.abs($leftPeriodIndex - periodIndex) > 1)
    then
        scoreHolder.addSoftConstraintMatch(kcontext,
                $topicConflict.getStudentSize() * (- $institutionParametrization.getTwoInADayPenalty()));
end

// Exams which share students have to few periods between them
rule "periodSpread"
    when
        $institutionParametrization : InstitutionParametrization(periodSpreadPenalty != 0)
        ...
    then
        scoreHolder.addSoftConstraintMatch(kcontext,
                ... * (- $institutionParametrization.getPeriodSpreadPenalty()));
end