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From "Antoine Pitrou (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ARROW-5215) [C++] Need a way to change integer size in DictBuilder and AdaptiveIntBuilder
Date Thu, 25 Apr 2019 15:10:00 GMT
Antoine Pitrou created ARROW-5215:
-------------------------------------

             Summary: [C++] Need a way to change integer size in DictBuilder and AdaptiveIntBuilder
                 Key: ARROW-5215
                 URL: https://issues.apache.org/jira/browse/ARROW-5215
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
    Affects Versions: 0.13.0
            Reporter: Antoine Pitrou


Currently, there's no way to choose the index type with DictionaryBuilder. Consequently, it's
difficult to implement e.g. casts to an specific dictionary type (instead the DictionaryBuilder
will select the smallest possible integer size for the index type).

This will allow implementing "null to dict" casting.



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