Aggregating / buffering transforms
close can now yield rows (this requires the new
StreamingRunner, see v2.0.0 release notes).
This will let component implementers support new types of scenarios:
- Batch transforms (such as the upcoming Kiba Pro
ParallelTransform, or batch SQL lookups)
- Grouping of rows (including in-memory or db-backed sort, normalisation operations, map operations)
See #57 for more background & explanations.
Ruby compatibility notice
Kiba now requires MRI Ruby 2.3+, JRuby 9.1+ or TruffleRuby.
This is done to reduce the testing burden, to encourage users to avoid EOL'ed rubies, and to let me use more recent Ruby features when relevant.