[ARROW-12952] [C++] Add regex count kernel

• Type: New Feature
• 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/18691
• Assignee: David Li
• Reporter: Ian Cook
• Created: 03/Jun/21 15:23
• Updated: 11/Jan/23 08:29
• Resolved: 10/Jun/21 20:02

Description

Returns the number of times the regular expression pattern occurs in the string, like len(re.findall(...)) in Python and regexp_count() in some SQL dialects

Issue Links

• is a child of: ARROW-555 [C++] String algorithm library for StringArray/BinaryArray
• is depended upon by: ARROW-13156 [R] bindings for str_count
• relates to: ARROW-12134 [C++] Add regex string match kernel
• relates to: ARROW-12950 [C++] Add substring count kernel
• links to: GitHub Pull Request #10471