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From "Marshall Schor (Jira)" <...@uima.apache.org>
Subject [jira] [Commented] (UIMA-6243) JCas returns Annotation when asked for a specific subtype
Date Thu, 25 Jun 2020 19:08:00 GMT

    [ https://issues.apache.org/jira/browse/UIMA-6243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17145764#comment-17145764
] 

Marshall Schor commented on UIMA-6243:
--------------------------------------

I see the same issue with the thatAnnotatorsCanLocallyUseDifferentJCasWrappers, again, because
in v3, the feature structure is made using the actual loaded JCas class.

> JCas returns Annotation when asked for a specific subtype
> ---------------------------------------------------------
>
>                 Key: UIMA-6243
>                 URL: https://issues.apache.org/jira/browse/UIMA-6243
>             Project: UIMA
>          Issue Type: Bug
>          Components: UIMA
>    Affects Versions: 2.10.4SDK
>            Reporter: Richard Eckart de Castilho
>            Priority: Major
>
> In a specific classloader topology, a fully initialized JCas with theoretic access to
the JCas wrappers of a given type will not return that type but instead returns an instance
of {{Annotation}}. This leads to an exception like this:
> {code}
> org.apache.uima.analysis_engine.AnalysisEngineProcessException: Annotator processing
failed.    
> 	at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.callAnalysisComponentProcess(PrimitiveAnalysisEngine_impl.java:427)
> 	at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.innerCall(PrimitiveAnalysisEngine_impl.java:329)
> 	at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.processAndOutputNewCASes(PrimitiveAnalysisEngine_impl.java:321)
> 	at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBase.java:269)
> 	at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBase.java:284)
> 	at org.apache.uima.cas.test.JCasClassLoaderTest.thatTypeSystemCanComeFromItsOwnClassLoader(JCasClassLoaderTest.java:126)
> 	... snip ...
> Caused by: java.lang.ClassCastException: org.apache.uima.jcas.tcas.Annotation cannot
be cast to org.apache.uima.cas.test.Token
> 	at java.util.Iterator.forEachRemaining(Iterator.java:116)
> 	at org.apache.uima.cas.test.JCasClassLoaderTest$FetchTheTokenAnnotator.process(JCasClassLoaderTest.java:166)
> 	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:411)
> 	... 28 more
> {code}
> Looks like this is a UIMAv2 issue only. When running the test against the UIMAv3 master
(commit 0211057ad), I do not get any ClassCastException.



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