OptaPlanner解决方案使用两个实体类和排队变量（列表变量）。错误“entityClassSet中有多个”

Question

我使用OptaPlanner 8.19.0。这个问题有两个实体类。

但它出现了以下例外：

未能实例化[org.optaplanner.core.api.solver.SolverManager]：工厂方法“SolverManager”引发异常；嵌套的异常是java。lang.IllegalArgumentException:config（QueuedValuePlacerConfig（ValueSelectorConfig（taskCombos），ChangeMoveSelectorConfig（null，ValueSelectorConfig（null）））没有配置实体类，并且由于实体类集中有多个实体类（[class com.aiseeding.aps.hf.domain.MachineStageFirst，class com.aiseeding.aps.hf.domain.MachineStageSecond]），因此无法自动推断。

PlanningEntity1和PlanningEntity2相同，但取值范围不同。我试图在@PlanngingEntity上使用value eRangeProvider，但optaplanner说它不支持列表变量。所以我使用了两个实体类，每个实体类都有一个value eProviderRange

解决方案类别：

@PlanningSolution
@XStreamAlias("TaTaskAssigningSolution")
public class APSSolution extends AbstractPersistable {

    @ProblemFactCollectionProperty
    private List<Tank> taskTypeList;

    @ValueRangeProvider(id = "taskRangeStageFirst")
    @ProblemFactCollectionProperty
    private List<TaskCombo> taskComboListStageFirst;

    @ValueRangeProvider(id = "taskRangeStageSecond")
    @ProblemFactCollectionProperty
    private List<TaskCombo> taskComboListStageSecond;

    @ProblemFactCollectionProperty
    private List<Tank> tankList;

    @PlanningEntityCollectionProperty
    private List<Machine> machineList;

    @PlanningEntityCollectionProperty
    private List<Machine> machineListSecond;

    @XStreamConverter(BendableScoreXStreamConverter.class)
    @PlanningScore(bendableHardLevelsSize = 1, bendableSoftLevelsSize = 4)

    private BendableLongScore score;

    /** Relates to {@link Task#()}. */
    private int frozenCutoff; // In minutes

    private Param param;
    private List<Stage> stageList;
    private Map<String,Task> taskMap;
    private Map<String,Machine> machineMap;

    public APSSolution(long id){}
}

PlanningEntity1和PlanningEntity2：

@PlanningEntity
@XStreamAlias("TaEmployee")
public class MachineStageFirst extends Machine {

    @PlanningListVariable(valueRangeProviderRefs = "taskRangeStageFirst")
    private List<TaskCombo> taskCombos;

    public MachineStageFirst()
    {    }

    public MachineStageFirst(long id, String fullName) {
        super.setId(id);
        super.setFullName(fullName);
        setTaskCombos(new ArrayList<>());
    }

    public List<TaskCombo> getTaskCombos() {
        return taskCombos;
    }

    public void setTaskCombos(List<TaskCombo> taskCombos) {
        this.taskCombos = taskCombos;
    }
}

conifg XML：

<?xml version="1.0" encoding="UTF-8"?>
<solver>
  <!--<environmentMode>FULL_ASSERT</environmentMode>--><!-- To slowly prove there are no bugs in this code -->
  <moveThreadCount>1</moveThreadCount> To solve faster by saturating multiple CPU cores

  <solutionClass>com.aps.hf.domain.APSSolution</solutionClass>
  <entityClass>com.aps.hf.domain.MachineStageFirst</entityClass>
  <entityClass>com.aps.hf.domain.MachineStageSecond</entityClass>


  <scoreDirectorFactory>
    <easyScoreCalculatorClass>com.aiseeding.aps.hf.score.APSConstraintScoreCalculator</easyScoreCalculatorClass>
  </scoreDirectorFactory>

  <termination>
    <secondsSpentLimit>10</secondsSpentLimit>
  </termination>

  <constructionHeuristic>
    <queuedValuePlacer>
      <entitySelector>
        <entityClass>com.aiseeding.aps.hf.domain.MachineStageFirst</entityClass>
      </entitySelector>
      <valueSelector id="placerValueSelector">
        <cacheType>PHASE</cacheType>
        <selectionOrder>SORTED</selectionOrder>
        <sorterManner>INCREASING_STRENGTH</sorterManner>
      </valueSelector>
      <changeMoveSelector>
        <entitySelector>
          <cacheType>PHASE</cacheType>
          <selectionOrder>SORTED</selectionOrder>
          <sorterManner>DECREASING_DIFFICULTY</sorterManner>
        </entitySelector>
        <valueSelector mimicSelectorRef="placerValueSelector"/>
      </changeMoveSelector>
    </queuedValuePlacer>
  </constructionHeuristic>

  <constructionHeuristic>
    <queuedValuePlacer>
      <entitySelector>
        <entityClass>com.aiseeding.aps.hf.domain.MachineStageSecond</entityClass>
      </entitySelector>
      <valueSelector id="placerValueSelector">
        <cacheType>PHASE</cacheType>
        <selectionOrder>SORTED</selectionOrder>
        <sorterManner>INCREASING_STRENGTH</sorterManner>
      </valueSelector>
      <changeMoveSelector>
        <entitySelector>
          <cacheType>PHASE</cacheType>
          <selectionOrder>SORTED</selectionOrder>
          <sorterManner>DECREASING_DIFFICULTY</sorterManner>
        </entitySelector>
        <valueSelector mimicSelectorRef="placerValueSelector"/>
      </changeMoveSelector>
    </queuedValuePlacer>
  </constructionHeuristic>

  <localSearch>
    <changeMoveSelector>
      <entitySelector>
        ... <!-- Normal selector properties -->
        <entityClass>com.aps.hf.domain.MachineStageFirst</entityClass>
      </entitySelector>
      <selectionOrder>ORIGINAL</selectionOrder>
    </changeMoveSelector>

    <acceptor>
      <entityTabuSize>5</entityTabuSize>
    </acceptor>
    <forager>
    </forager>
  </localSearch>
  <localSearch>
    <changeMoveSelector>
      <entitySelector>
        ... <!-- Normal selector properties -->
        <entityClass>com.aps.hf.domain.MachineStageSecond</entityClass>
      </entitySelector>
      <selectionOrder>ORIGINAL</selectionOrder>
    </changeMoveSelector>

    <acceptor>
      <entityTabuSize>5</entityTabuSize>
    </acceptor>
    <forager>
    </forager>
  </localSearch>

</solver>

问题是由两个实体CALSS还是排队变量引起的？

多谢啦~

Answer 1

具有多个实体类（每个实体类至少有一个真正的（=非影子）规划变量）的情况既困难又罕见。

@PlanningListVariable尚未与多个实体类兼容。