[SOLR-13380] Unwrapping boolean query consists of single MUST clause in parser

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 8.0, 9.0
• Component/s: query parsers
• Assignee: Unassigned
• Reporter: Nikolay Khitrin
• Created: 08/Apr/19 16:42
• Updated: 08/Jun/19 15:03

Description

Solr query parser unwraps boolean queries with single SHOULD clause.

It works fine with OR query operator, but parser can’t unwrap single-clause query in {!q.op=AND} case.

 

I’m not familiar with edismax parser and this patch might affect it.
Single clause case looks pretty safe and existing tests were passed, but I ought to ask for peer review not only standard parser patch, but also it effect on edismax.