[LUCENE-2577] SpanNearQuery inconsistency: should it accept less than 2 clauses or not?

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.0.2
• Component/s: core/search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Santiago M. Mola
• Created: 29/Jul/10 12:50
• Updated: 28/Aug/22 12:30

Description

NearSpansOrdered's constructor will throw an IllegalArgumentException
if less than 2 clauses are given, while NearSpansOrdered won't.

On the other hand, SpanNearQuery accepts less than 2 clauses and has explicit optimization for 0-caluse and 1-clause queries in getSpans() method.

So, should SpanNearQuery accept less than 2 clauses or not?