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问题：

两个计划实体类的求解器配置问题

暴阳州
2023-03-14

我正在研究一个问题的解决方案，这个问题与optaplanner中的护士名册示例很接近。

似乎都不起作用，我总是遇到这种例外

Exception in thread "main" java.lang.IllegalArgumentException: Unmarshalling of solverConfigResource (org/optaplanner/examples/nurserostering/solver/nurseRosteringSolverConfig.xml) fails.

以下是我一直尝试使用的配置：

配置1：

在此配置中，默认的移动选择器用于本地搜索中的规划实体shift assignment类，并且为规划实体类“EmployeeSkillRequirement”添加了移动选择器，所有的东西都在a中组合，构造启发式用合并到的移动选择器替换。

<?xml version="1.0" encoding="UTF-8"?>
<solver>
<!--<environmentMode>FAST_ASSERT</environmentMode> -->
<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster
</solutionClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
</entityClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
</entityClass>
<scoreDirectorFactory>
    <scoreDefinitionType>HARD_SOFT</scoreDefinitionType>
    <scoreDrl>org/optaplanner/examples/nurserostering/solver/nurseRosteringScoreRules.drl
    </scoreDrl>
</scoreDirectorFactory>

<termination>
    <!-- Official benchmark secondsSpentLimit allowed on: - ge0ffrey's main 
        pc: sprint 11, medium 700, long 42000 -->
    <secondsSpentLimit>700</secondsSpentLimit>
    <!--<bestScoreLimit>-0hard/-999999soft</bestScoreLimit> -->
</termination>
<constructionHeuristic>
    <queuedEntityPlacer>
        <unionMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
        </unionMoveSelector>
    </queuedEntityPlacer>
</constructionHeuristic>
<localSearch>
    <unionMoveSelector>

        <!-- Move Selectors for ShiftAssignment this was the default configuration 
            from the example -->
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.EmployeeChangeMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>STEP</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentPillarPartSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>


        <!-- The move selectors for the second plannig entity class EmployeeSkillRequirement -->
        <changeMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <variableName>employee</variableName>
            </valueSelector>
        </changeMoveSelector>
        <swapMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <variableName>employee</variableName>
            </valueSelector>
        </swapMoveSelector>
    </unionMoveSelector>
    <acceptor>
        <entityTabuSize>7</entityTabuSize>
    </acceptor>
    <forager>
        <acceptedCountLimit>800</acceptedCountLimit>
    </forager>
</localSearch>

配置2：

其次，我查看了文档，发现了这样的提示：如果每个规划实体类都有两个不同的构造启发部分，那么处理多个规划实体类会更容易一些http://docs.jboss.org/optaplanner/release/6.3.0.final/optaplanner-docs/html_single/index.html#AllocateEntityFromQueueEmultipleEntityClasss，所以我也尝试了这种配置。

<?xml version="1.0" encoding="UTF-8"?>
<solver>
<!--<environmentMode>FAST_ASSERT</environmentMode> -->
<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster
</solutionClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
</entityClass>
<entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
</entityClass>
<scoreDirectorFactory>
    <scoreDefinitionType>HARD_SOFT</scoreDefinitionType>
    <scoreDrl>org/optaplanner/examples/nurserostering/solver/nurseRosteringScoreRules.drl
    </scoreDrl>
</scoreDirectorFactory>

<termination>
    <!-- Official benchmark secondsSpentLimit allowed on: - ge0ffrey's main 
        pc: sprint 11, medium 700, long 42000 -->
    <secondsSpentLimit>700</secondsSpentLimit>
    <!--<bestScoreLimit>-0hard/-999999soft</bestScoreLimit> -->
</termination>
<constructionHeuristic>
    <queuedEntityPlacer>
        <unionMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
        </unionMoveSelector>
    </queuedEntityPlacer>
</constructionHeuristic>
<constructionHeuristic>
    <queuedEntityPlacer>
        <unionMoveSelector>
            <changeMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </changeMoveSelector>
            <swapMoveSelector>
                <entitySelector>
                    <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </entityClass>
                </entitySelector>
                <valueSelector>
                    <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                    </downcastEntityClass>
                    <variableName>employee</variableName>
                </valueSelector>
            </swapMoveSelector>
        </unionMoveSelector>
    </queuedEntityPlacer>
</constructionHeuristic>
<localSearch>
    <unionMoveSelector>

        <!-- Move Selectors for ShiftAssignment this was the default configuration 
            from the example -->
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.EmployeeChangeMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>PHASE</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <moveListFactory>
            <cacheType>STEP</cacheType>
            <moveListFactoryClass>org.optaplanner.examples.nurserostering.solver.move.factory.ShiftAssignmentPillarPartSwapMoveFactory
            </moveListFactoryClass>
        </moveListFactory>
        <!-- besides this default configuration from optaplaner i also tried this here

        <changeMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </changeMoveSelector>
        <swapMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.ShiftAssignment
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </swapMoveSelector>-->


        <!-- The move selectors for the second plannig entity class EmployeeSkillRequirement -->
        <changeMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </changeMoveSelector>
        <swapMoveSelector>
            <entitySelector>
                <entityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </entityClass>
            </entitySelector>
            <valueSelector>
                <downcastEntityClass>org.optaplanner.examples.nurserostering.domain.EmployeeSkillRequirement
                </downcastEntityClass>
                <variableName>employee</variableName>
            </valueSelector>
        </swapMoveSelector>
    </unionMoveSelector>
    <acceptor>
        <entityTabuSize>7</entityTabuSize>
    </acceptor>
    <forager>
        <acceptedCountLimit>800</acceptedCountLimit>
    </forager>
</localSearch>

我也尝试了一些其他的配置，与这些类似，仍然，没有运气。

我怎样才能修好它并使它正常工作呢？

编辑：

Exception in thread "main" java.lang.IllegalArgumentException: Unmarshalling of solverConfigResource (org/optaplanner/examples/nurserostering/solver/nurseRosteringSolverConfig.xml) fails.
at org.optaplanner.core.impl.solver.XStreamXmlSolverFactory.configure(XStreamXmlSolverFactory.java:114)
at org.optaplanner.core.api.solver.SolverFactory.createFromXmlResource(SolverFactory.java:66)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.createSolver(NurseRosteringApp.java:50)
at org.optaplanner.examples.common.app.CommonApp.createSolutionBusiness(CommonApp.java:90)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:77)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:73)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.main(NurseRosteringApp.java:38)
Caused by: " com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field   org.optaplanner.core.config.heuristic.selector.move.generic.SwapMoveSelectorConfig.valueSelector
---- Debugging information ----
field               : valueSelector
class               :      org.optaplanner.core.config.heuristic.selector.move.generic.SwapMoveSelect    orConfig
required-type       :     org.optaplanner.core.config.heuristic.selector.move.generic.SwapMoveSelect    orConfig
converter-type      :    com.thoughtworks.xstream.converters.reflection.ReflectionConverter
line number         : 98
class[1]            :       org.optaplanner.core.config.heuristic.selector.move.composite.UnionMoveSel    ectorConfig
class[2]            :    org.optaplanner.core.config.localsearch.LocalSearchPhaseConfig
class[3]            : org.optaplanner.core.config.solver.SolverConfig
version             : 1.4.7
-------------------------------
at org.optaplanner.core.impl.solver.XStreamXmlSolverFactory.configure(XStreamXmlSolverFactory.java:114)
at org.optaplanner.core.api.solver.SolverFactory.createFromXmlResource(SolverFactory.java:66)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.createSolver(NurseRosteringApp.java:50)
at org.optaplanner.examples.common.app.CommonApp.createSolutionBusiness(CommonApp.java:90)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:77)
at org.optaplanner.examples.common.app.CommonApp.init(CommonApp.java:73)
at org.optaplanner.examples.nurserostering.app.NurseRosteringApp.main(NurseRosteringApp.java:38)

共有1个答案

仲孙子辰
2023-03-14

一个常见的错误是在classname属性中添加未被正确解析的空白。这将在解析期间失败：

<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster
</solutionClass>

但这将成功地进行解析：

<solutionClass>org.optaplanner.examples.nurserostering.domain.NurseRoster</solutionClass>
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