[ARROW-7945] [C++][Dataset] Implement InMemoryDatasetFactory

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.16.0
• Component/s: C++
• Labels: dataset
• External issue URL: https://github.com/apache/arrow/issues/24164
• Assignee: Ben Kietzman
• Reporter: Ben Kietzman
• Created: 26/Feb/20 14:20
• Updated: 11/Jan/23 07:57
• Resolved: 07/Aug/20 16:00

Description

This will allow in memory datasets (such as tables) to participate in discovery through UnionDatasetFactory. This class will be trivial since Inspect will do nothing but return the table's schema, but is necessary to ensure that the resulting UnionDataset's unified schema accommodates the table's schema (for example including fields present only in the table's schema or emitting an error when unification is not possible)

Issue Links

• is superceded by: ARROW-8164 [C++][Dataset] Let datasets be viewable with non-identical schema