[FLINK-22699] Make ConstantArgumentCount public API

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.13.0
• Fix Version/s: 1.14.0, 1.13.1
• Component/s: Table SQL / API
• Assignee: Timo Walther
• Reporter: Nico Kruber
• Created: 18/May/21 21:59
• Updated: 19/May/21 15:29
• Resolved: 19/May/21 15:29

Description

ConstantArgumentCount is quite useful when implementing custom type inference. While the user can, of course, implement an ArgumentCount as well with just a few methods, it feels like this one is the most commonly used implementation and could be provided as public API (currently, it's marked @Internal.