Details
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Sub-task
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Status: Resolved
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Major
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Resolution: Incomplete
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2.4.0
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None
Description
See parent ticket for more information. Two proposals with sketches:
Proposal 1. create a version of rangeBetween that accepts Strings, i.e. rangeBetween(String, String). This is obviously very flexible, but less type safe.
Proposal 2. creates a new type called WindowFrameBoundary:
trait WindowFrameBoundary
object WindowFrameBoundary {
def unboundedPreceding: WindowFrameBoundary
def unboundedFollowing: WindowFrameBoundary
def currentRow: WindowFrameBoundary
def at(value: Long)
def interval(interval: String)
}
And create a new rangeBetween that accepts WindowFrameBoundary's, i.e.
def rangeBetween(start: WindowFrameBoundary, end: WindowFrameBoundary)
This is also very flexible and type safe at the same time.
Note the two are not mutually exclusive, and we can also deprecate the existing confusing APIs.
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