String-subtype features can't be set to null?
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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
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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