[ARROW-16006] [C++][Docs] Provide row conversion example for dynamic schemas

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 7.0.0
• Fix Version/s: 9.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31429

Language

C++

• Assignee: Will Jones
• Reporter: Will Jones
• Created: 22/Mar/22 16:14
• Updated: 11/Jan/23 11:41
• Resolved: 06/Jul/22 11:52

Description

Short version: Given a way to convert a vector of rows and a schema to a RecordBatch, we can derive methods for efficiently converting a vector of rows to a Table or even an iterator of rows to a Record Batch Reader. Similarly, we could go the other way: given a way to convert a RecordBatch to a vector of rows, we can derive methods for converting from Tables or RBRs.

Long version: https://docs.google.com/document/d/174tldmQLMCvOtjxGtFPeoLBefyE1x26_xntwfSzDXFA/edit?usp=sharing

Issue Links

• is related to: ARROW-15975 [C++] Document VisitArrayInline and type traits
• links to: GitHub Pull Request #12775