[ARROW-6368] [C++] Add RecordBatch projection functionality

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: C++
• Labels: dataset pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22742
• Assignee: Ben Kietzman
• Reporter: Ben Kietzman
• Created: 27/Aug/19 14:26
• Updated: 11/Jan/23 07:46
• Resolved: 09/Sep/19 12:39

Description

define classes RecordBatchProjector (which projects from one schema to another, augmenting with null/constant columns where necessary) and a subtype of RecordBatchIterator which projects each batch yielded by a wrapped iterator.

Issue Links

• links to: GitHub Pull Request #5207