[jira] [Created] (ARROW-14068) [R] Better handling of calling string functions on dictionaries

["Nicola Crane (Jira)" <ji...@apache.org>]

Nicola Crane created ARROW-14068:
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             Summary: [R] Better handling of calling string functions on dictionaries
                 Key: ARROW-14068
                 URL: https://issues.apache.org/jira/browse/ARROW-14068
             Project: Apache Arrow
          Issue Type: Improvement
          Components: R
            Reporter: Nicola Crane


When working with R tables that have factor columns and then have been converted into Arrow Tables, it's not pretty when we try to call string functions on those columns (which are now dictionaries)

{code:java}
Table$create(iris) %>%
  mutate(x = str_to_lower(Species))
## Error: NotImplemented: Function utf8_lower has no kernel matching input types (array[dictionary<values=string, indices=int8, ordered=0>])
{code}




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