[ARROW-13097] [C++] Provide a simple reflection utility for {{struct}}s

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28802
• Assignee: Ben Kietzman
• Reporter: Ben Kietzman
• Created: 16/Jun/21 16:01
• Updated: 11/Jan/23 08:30
• Resolved: 21/Jun/21 19:09

Description

In cases such as ARROW-13025 it's advantageous to avoid boilerplate when dealing with objects which are basic structs of data members. A simple reflection utility (get/set the value of a data member, print the name of a member to string) would allow writing functionality generically in terms of a tuple of properties, greatly reducing boilerplate.

See a sketch of one such utility here https://gist.github.com/bkietz/7899f477e86df49f21ab17201c518d74

Issue Links

• links to: GitHub Pull Request #10551