[jira] Assigned: (UIMA-1839) String-subtype features can't be set to null?

["Marshall Schor (JIRA)" <de...@uima.apache.org>]

     [ https://issues.apache.org/jira/browse/UIMA-1839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marshall Schor reassigned UIMA-1839:
------------------------------------

    Assignee: Marshall Schor

> String-subtype features can't be set to null?
> ---------------------------------------------
>
>                 Key: UIMA-1839
>                 URL: https://issues.apache.org/jira/browse/UIMA-1839
>             Project: UIMA
>          Issue Type: Bug
>          Components: Core Java Framework
>    Affects Versions: 2.3
>            Reporter: Adam Lally
>            Assignee: Marshall Schor
>            Priority: Minor
>
> If you try to set a string-subtype feature to null, you get a NullPointerException:
> java.lang.NullPointerException
> 	at java.lang.String.compareTo(String.java:1167)
> 	at java.lang.String.compareTo(String.java:92)
> 	at java.util.Arrays.binarySearch0(Arrays.java:2001)
> 	at java.util.Arrays.binarySearch(Arrays.java:1943)
> 	at org.apache.uima.cas.impl.CASImpl.ll_setStringValue(CASImpl.java:3203)
> 	at org.apache.uima.cas.impl.FeatureStructureImpl.setStringValue(FeatureStructureImpl.java:130)
> The documentation doesn't specifically address whether this is allowed, but my intuition was that it should be.  For one thing, a string-subtype feature can have the value null when it is uninitialized, so why shouldn't I be able to explicitly set it to null?
> A simple way to replicate is to add the line
>     fs.setStringValue(stringSetFeat, null);
> to the test case method StringSubtypeTest.testCas()

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