[ARROW-13385] [C++][Compute] Document out-of-source addition to the FunctionRegistry

• 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/29056
• Assignee: David Li
• Reporter: Ben Kietzman
• Created: 19/Jul/21 18:27
• Updated: 11/Jan/23 08:32
• Resolved: 20/Jul/21 14:39

Description

The FunctionRegistry class provides support for consumers of the library to define their own compute functions and add them to the registry for usage in filter expressions, projections, etc. We don't have any documentation on how to do this, and it'd be worthwhile to add an example too.

Issue Links

• links to: GitHub Pull Request #10748