KIE 项目中的构造启发式

Question

我使用了 KIE Workbench 6.5.0.Final 创建了如下的求解器配置：

<solver xStreamId="1">
  <scanAnnotatedClasses xStreamId="2"/>
  <scoreDirectorFactory xStreamId="3">
    <scoreDefinitionType>HARD_SOFT</scoreDefinitionType>
    <ksessionName>apsSession</ksessionName>
  </scoreDirectorFactory>
  <termination xStreamId="4">
    <unimprovedSecondsSpentLimit>0</unimprovedSecondsSpentLimit>
    <unimprovedMinutesSpentLimit>1</unimprovedMinutesSpentLimit>
    <unimprovedHoursSpentLimit>0</unimprovedHoursSpentLimit>
    <unimprovedDaysSpentLimit>0</unimprovedDaysSpentLimit>
  </termination>
</solver>

当我在 Eclipse 中执行 deluging 项目时，出现以下错误，提示我需要在本地搜索之前通过 Construction Heuristic 初始化解决方案。

[main] INFO org.optaplanner.core.impl.constructionheuristic.DefaultConstructionHeuristicPhase - Construction Heuristic phase (0) ended: step total (273), time spent (5903), best score (-429hard/-5400soft).
    Exception in thread "main" java.lang.IllegalStateException: Local Search phase (1) needs to start from an initialized solution, but the planning variable (Task.previousTaskOrMachinePlan) is uninitialized for the entity (com.esquel.fas.aps.Task@ac91282).
      Initialize the solution by configuring a Construction Heuristic phase before this phase.
        at org.optaplanner.core.impl.phase.AbstractPhase.assertWorkingSolutionInitialized(AbstractPhase.java:141)
        at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.phaseStarted(DefaultLocalSearchPhase.java:124)
        at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:66)
        at org.optaplanner.core.impl.solver.DefaultSolver.runPhases(DefaultSolver.java:215)
        at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:176)
        at com.esquel.fas.aps.App.main(App.java:127)

在求解器配置中添加以下内容后，一切都变得完美。

 <constructionHeuristic>
    <constructionHeuristicType>FIRST_FIT</constructionHeuristicType>
  </constructionHeuristic>

但是，KIE 中的求解器配置 Workbench 在源代码级别不可编辑，在用户界面中也没有选项，想知道我们如何将其包含在 KIE 项目中？谢谢。

Answer 1

检查域模型中的 setter 和 getter，尤其是在 Task 上。检查调试日志。

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