两个计划实体类的求解器配置问题

时间：2016-03-17 00:10:46

标签： optaplanner

我正在研究一个与optaplanner中的Nurse Rostering示例相近的问题的解决方案。

员工被分配到护士名册中的轮班，但主要区别在于，技能要求（作业）最后可以说20分钟。如果员工被分配到涵盖给定技能要求时间的班次，则可以将员工分配到技能要求。假设我们从12点到12点20分对Skill1有一项技能要求，并且员工从08:00到16:00被分配，那么只有具备该技能才能将他分配到该技能要求。 / p>

我有2个计划实体类。示例中的默认移位分配，我已经实现了另外两个类SkillRequirement类，它将在给定的时间范围内保持一个技能要求（这将是一个计划事实），第二个计划实体类将在Employee和SkillRequirement类及其名称为EmployeeSkillRequirement。

到现在为止，我认为我做了一切，我注释了EmployeeSkillRequirement  作为@PlanningEntity的类和具有适当值范围的计划变量，在计划解决方案中，我添加了技能要求列表（这些是事实，也可以用于工作内存）以及有关技能要求的员工列表实体并使用@PlanningEntitySolutionProperty正确注释

我很难配置求解器，我尝试了很多不同的求解器配置，我在文档中读到，当有更多的规划实体和/或规划变量时，应该使用移动选择器的并集。你告诉OptaPlanner计划实体类和计划变量的名称，因为默认情况下它无法找到它。

似乎没有用，我一直得到这个例外

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

以下是配置i＆＃39;一直试图使用：

配置1：

在此配置中，默认移动选择器用于 规划实体转移分配类在本地搜索和移动 选择 为计划实体类添加 ＆＃34; EmployeeSkillRequirement＆＃34;一切都结合在了一起     并且将构造启发式替换为移动选择器组合在一个联合中。

<?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，我看了一下文档，发现这个提示说如果每个规划有两个不同的构造启发式部分，那么处理多个规划实体类会更容易 http://docs.jboss.org/optaplanner/release/6.3.0.Final/optaplanner-docs/html_single/index.html#allocateEntityFromQueueMultipleEntityClasses 所以我也尝试了这个配置。

<?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>

我还尝试了一些与这些类似的其他配置，但仍然没有运气。

我如何解决此问题并使其正常工作？

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)

1 个答案:

答案 0 :(得分：3)

常见的错误是在classname属性中添加空格，而这些空格无法正确解析。解析期间失败：

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

但是成功解析了这个：

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