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https://issues.apache.org/jira/browse/UIMA-3234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15498533#comment-15498533
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Richard Eckart de Castilho commented on UIMA-3234:
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I am considering to not cover this in uimaFIT and instead resolve it as part of 
UIMA-1524 (new iteration API in UIMA core).

> Differentiate no Annotation and multiple Annotation case in 
> CasUtil.selectSingle(CAS cas, Type type)
> ----------------------------------------------------------------------------------------------------
>
>                 Key: UIMA-3234
>                 URL: https://issues.apache.org/jira/browse/UIMA-3234
>             Project: UIMA
>          Issue Type: Wish
>          Components: uimaFIT
>    Affects Versions: 2.0.0uimaFIT
>            Reporter: Artem
>            Priority: Trivial
>             Fix For: 2.3.0uimaFIT
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Currently there is one exception type in CasUtil.selectSingle(CAS cas, Type 
> type) method for the case if CAS does not contain an Annotation or CAS 
> contains more than one Annotation. However, I sometimes need to differentiate 
> between these two cases in exception handling. A new method like, 
> selectSingleOrNull(...) could solve this problem: return null if no 
> Annotation, RuntimeException if multiple Annotations.
> Currently to handle this problem I just use CasUtil.select(...) and check for 
> the size of the returned collection.



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