Artem created UIMA-3234:
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Summary: 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
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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