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https://issues.apache.org/jira/browse/UIMA-5601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16190360#comment-16190360
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Richard Eckart de Castilho commented on UIMA-5601:
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In the DKPro Core scenario, the target CAS is obtained, initialized with the
custom document annotation (DocumentMetaData) and also the soft string in the
target CAS is set. Only then the CasCopier is created and used to copy FSes. So
I guess for that case, your suggestion would work.
I'm unsure about making behavior depending on whether the sofa string has
already been set or not. I think I'd prefer a consistent final result
irrespective of how the sofa string is set. It feels rather unrelated to the
document annotation.
> uv3: CasCopier problems with custom subclasses of DocumentAnnotation
> --------------------------------------------------------------------
>
> Key: UIMA-5601
> URL: https://issues.apache.org/jira/browse/UIMA-5601
> Project: UIMA
> Issue Type: Bug
> Components: Core Java Framework
> Affects Versions: 3.0.0SDK-beta
> Reporter: Richard Eckart de Castilho
>
> It seems as if there may be a bug in the way that CasCopier handles the
> documen annotation.
> Specifically, it seems as if the CasCopier incorrectly handles the case where
> the target CAS already contains a document annotation. In my case, I do:
> * create the target CAS
> * add a document annotation (DocumentMetaData extends DocumentAnnotation) to
> the target CAS
> * create the CasCopier with the source and target CAS
> * copy several FSes but *not* the document annotation
> Expected:
> * target CAS contains 1 DocumentMetaData annotation
> Actual
> * target CAS contains 2 DocumentMetaData annotation
> Also, it seems that `isDocumentAnnotation` may not able to handle it if a CAS
> uses a custom subclass of DocumentAnnotation:
> {noformat}
> private <T extends FeatureStructure> boolean isDocumentAnnotation(T aFS) {
> if (((TOP)aFS)._getTypeCode() != TypeSystemConstants.docTypeCode) {
> return false;
> }
> if (srcCasDocumentAnnotation == null) {
> srcCasDocumentAnnotation =
> srcCasViewImpl.getDocumentAnnotationNoCreate();
> }
> return aFS == srcCasDocumentAnnotation;
> }
> {noformat}
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