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https://issues.apache.org/jira/browse/ARROW-12951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou resolved ARROW-12951.
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Fix Version/s: 5.0.0
Resolution: Fixed
Issue resolved by pull request 10496
[https://github.com/apache/arrow/pull/10496]
> [C++] Refactor StringTransform
> ------------------------------
>
> Key: ARROW-12951
> URL: https://issues.apache.org/jira/browse/ARROW-12951
> Project: Apache Arrow
> Issue Type: Task
> Components: C++
> Reporter: Antoine Pitrou
> Assignee: Antoine Pitrou
> Priority: Minor
> Labels: pull-request-available
> Fix For: 5.0.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> In {{compute/kernels/scalar_string.cc}, currently there is a non-trivial
> inheritance relationship between {{StringTransform}} and its derived
> implementation classes. Also, the derived classes have to be templated on the
> actual string type even though their code doesn't care, making generated code
> size probably bigger than it should be.
> Instead, there could be a {{StringTransformExec}} class that delegates to an
> independent class for per-kernel specifics (mostly: the {{MaxCodeunits}} and
> {{Transform}} methods).
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