Drools Planner構造Huristic java.lang.ClassCastException

我試圖初始化解決方案使用Drools Planner 5.4.Final構造啓發式類型BEST_FIT。Drools Planner構造Huristic java.lang.ClassCastException

<constructionHeuristic> 
    <constructionHeuristicType>BEST_FIT</constructionHeuristicType> 
</constructionHeuristic>

以下運行時錯誤評估過程中出現

java.lang.ClassCastException: org.drools.planner.config.constructionheuristic.ConstructionHeuristicSolverPhaseConfig cannot be cast to org.drools.planner.config.localsearch.LocalSearchSolverPhaseConfig

沒有任何人有任何提示？

感謝

這是堆棧跟蹤

com.thoughtworks.xstream.converters.ConversionException: Element constructionHeuristic of type org.drools.planner.config.constructionheuristic.ConstructionHeuristicSolverPhaseConfig is not defined as field in type org.drools.planner.config.localsearch.LocalSearchSolverPhaseConfig 
---- Debugging information ---- 
class    : org.drools.planner.config.localsearch.LocalSearchSolverPhaseConfig 
required-type  : org.drools.planner.config.localsearch.LocalSearchSolverPhaseConfig 
converter-type  : com.thoughtworks.xstream.converters.reflection.ReflectionConverter 
line number   : 23 
class[1]   : org.drools.planner.config.solver.SolverConfig 
version    : null 
------------------------------- 
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter: writeValueToImplicitCollection (line:399) 
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter: doUnmarshal (line:330) 
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter: unmarshal (line:230) 
com.thoughtworks.xstream.core.TreeUnmarshaller: convert (line:72) 
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller: convert (line:65) 
com.thoughtworks.xstream.core.TreeUnmarshaller: convertAnother (line:66) 
com.thoughtworks.xstream.core.TreeUnmarshaller: convertAnother (line:50) 
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter: doUnmarshal (line:318) 
com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter: unmarshal (line:230) 
com.thoughtworks.xstream.core.TreeUnmarshaller: convert (line:72) 
com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller: convert (line:65) 
com.thoughtworks.xstream.core.TreeUnmarshaller: convertAnother (line:66) 
com.thoughtworks.xstream.core.TreeUnmarshaller: convertAnother (line:50) 
com.thoughtworks.xstream.core.TreeUnmarshaller: start (line:134) 
com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy: unmarshal (line:32) 
com.thoughtworks.xstream.XStream: unmarshal (line:1035) 
com.thoughtworks.xstream.XStream: unmarshal (line:1019) 
com.thoughtworks.xstream.XStream: fromXML (line:895) 
org.drools.planner.config.XmlSolverFactory: configure (line:95) 
org.drools.planner.config.XmlSolverFactory: configure (line:85) 
org.drools.planner.config.XmlSolverFactory: configure (line:78)

來源

2013-10-03 Tommaso Taruffi

什麼是完整的堆棧跟蹤？順便說一句：它真的值得升級到5.5（JIT的東西），然後到6.0（加速等）。只需按照升級配方txt。 –

根據你正在做這樣的事情

<solver> 
    ... 
    <localSearch> 
    <constructionHeuristic> 
     ...  
    </constructionHeuristic> 
    ... 
    </localSearch> 
<solver>

，而應該是堆棧跟蹤是這樣的：

<solver> 
    ... 
    <constructionHeuristic> 
    ...  
    </constructionHeuristic> 
    <localSearch> 
    ... 
    </localSearch> 
<solver>

來源

2013-10-03 14:01:34

嗨，謝謝你的建議。我附加了錯誤的stacktrace，因爲我做了幾次嘗試。問題是（在我的代碼中）這些行： LocalSearchSolverPhaseConfig localSearchSolverPhaseConfig =（LocalSearchSolverPhaseConfig）configurer.getSolverConfig（）。getSolverPhaseConfigList（）。get（0）; localSearchSolverPhaseConfig.getForagerConfig（）。setMinimalAcceptedSelection（options.getDepthSearch（））; –

因爲之前在config.xml中我只有一個求解器階段。我糾正了我的代碼，但不幸的是，在我的問題中，我有2個計劃實體，啓發式只支持一個： java.lang.UnsupportedOperationException：目前，greedyFit實現僅支持1個planningEntityImplementationClass。 –

@TommasoTaruffi升級到OptaPlanner（= Drools Planner）6.0.0.CR4或更高版本，它支持具有多個計劃實體的CH。 –

Drools Planner構造Huristic java.lang.ClassCastException

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