[LUCENE-8300] Add unordered-distinct IntervalsSource

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.4
• Lucene Fields: New
• Assignee: Alan Woodward
• Reporter: Alan Woodward
• Created: 09/May/18 08:16
• Updated: 28/Aug/22 15:29
• Resolved: 30/May/18 15:17

Description

mattweber pointed out on LUCENE-8196 that Intervals.unordered() doesn't check to see if its subintervals overlap, which means that for example Intervals.unordered(Intervals.term("a"), Intervals.term("a")) would match a document with a appearing only once. This ticket will introduce a new function, Intervals.unordered_distinct(), that ensures that all subintervals within an unordered interval do not overlap.