ClassCastException- UIMA Ruta

Question

在将ruta版本从2.5.0升级到2.6.1之后，"java.lang.ClassCastException:无法将org.apache.uima.jcas.tcas.Annotation转换为java.lang.String“异常”(Installtion Details，附于)。如何解决此异常？此异常在执行以下脚本时发生。初始化过程需要更多时间。

脚本：

           FOREACH(hlev) Headinglevel{}
           {
               Document{->tagClass="",onlyClass=true};
               hlev{-> ASSIGN(tagClass,tagName + "." + className), Headinglevel.class = tagClass}
                   <-{TagName{->MATCHEDTEXT(tagName)} # ClassName{->MATCHEDTEXT(className)};};

               CssDefinition{->onlyClass=false, family = CssDefinition.fontfamily, size = CssDefinition.fontsize, color = CssDefinition.fontcolor, bold = CssDefinition.bold, italic = CssDefinition.italic, underline = CssDefinition.underline, case = CssDefinition.case}
                   <-{CssStyles{PARSE(cssStylesStr),IF(contains(cssStylesStr,tagClass))};};                    
           }                 

Stacktrace:

Aug 02, 2018 12:07:25 PM org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl callAnalysisComponentProcess(434)
SEVERE: Exception occurred
org.apache.uima.analysis_engine.AnalysisEngineProcessException: Annotator processing failed. 
at org.apache.uima.ruta.engine.RutaEngine.process(RutaEngine.java:563)
at org.apache.uima.analysis_component.JCasAnnotator_ImplBase.process(JCasAnnotator_ImplBase.java:48)
at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.callAnalysisComponentProcess(PrimitiveAnalysisEngine_impl.java:401)
at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.processAndOutputNewCASes(PrimitiveAnalysisEngine_impl.java:318)
at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBase.java:269)
at org.apache.uima.ruta.ide.launching.RutaLauncher.processFile(RutaLauncher.java:242)
at org.apache.uima.ruta.ide.launching.RutaLauncher.main(RutaLauncher.java:191)
Caused by: java.lang.ClassCastException: Cannot cast org.apache.uima.jcas.tcas.Annotation to java.lang.String
at java.lang.Class.cast(Class.java:3369)
at org.apache.uima.ruta.RutaEnvironment.getVariableValue(RutaEnvironment.java:866)
at org.apache.uima.ruta.expression.string.StringVariableExpression.getStringValue(StringVariableExpression.java:38)
at org.apache.uima.ruta.rule.RutaLiteralMatcher.getMatchingAnnotations(RutaLiteralMatcher.java:51)
at org.apache.uima.ruta.rule.RutaLiteralMatcher.getMatchingAnnotations(RutaLiteralMatcher.java:33)
at org.apache.uima.ruta.rule.RutaRuleElement.getAnchors(RutaRuleElement.java:51)
at org.apache.uima.ruta.rule.RutaRuleElement.startMatch(RutaRuleElement.java:59)
at org.apache.uima.ruta.rule.ComposedRuleElement.startMatch(ComposedRuleElement.java:76)
at org.apache.uima.ruta.rule.RutaRule.apply(RutaRule.java:63)
at org.apache.uima.ruta.rule.RutaRule.apply(RutaRule.java:54)
at org.apache.uima.ruta.rule.RutaRule.apply(RutaRule.java:36)
at org.apache.uima.ruta.block.ForEachBlock.apply(ForEachBlock.java:92)
at org.apache.uima.ruta.block.RutaScriptBlock.apply(RutaScriptBlock.java:67)
at org.apache.uima.ruta.RutaModule.apply(RutaModule.java:56)
at org.apache.uima.ruta.engine.RutaEngine.process(RutaEngine.java:561)

​

..。

Answer 1

我没有使用字符串，而是直接使用注释名。

   FOREACH(hlev) Headinglevel{}
           {
               Document{->tagClass="",onlyClass=true};
               Headinglevel{-> ASSIGN(tagClass,tagName + "." + className), Headinglevel.class = tagClass}
                   <-{TagName{->MATCHEDTEXT(tagName)} # ClassName{->MATCHEDTEXT(className)};};

               CssDefinition{->onlyClass=false, family = CssDefinition.fontfamily, size = CssDefinition.fontsize, color = CssDefinition.fontcolor, bold = CssDefinition.bold, italic = CssDefinition.italic, underline = CssDefinition.underline, case = CssDefinition.case}
                   <-{CssStyles{PARSE(cssStylesStr),IF(contains(cssStylesStr,tagClass))};};
           }