[FLINK-1456] Projection to fieldnames, keyselectors

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 0.9
• Component/s: API / DataSet, API / DataStream
• Assignee: Márton Balassi
• Reporter: Márton Balassi
• Created: 26/Jan/15 19:55
• Updated: 30/Jan/17 14:49
• Resolved: 30/Jan/17 14:49

Description

The projection operator of both the batch and the streaming APIs only support projections with field positions as parameters. I'd like to extend this functionality with projection to fieldnames, and keyselectors providing a similar API to what groupBy already has.