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https://issues.apache.org/jira/browse/UIMA-5601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16191576#comment-16191576
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Richard Eckart de Castilho commented on UIMA-5601:
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A quick test looks good from here so far. I'll run the full build and report
back on the usual mailing list thread.
> 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
> Assignee: Marshall Schor
>
> 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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