[LUCENE-5664] New meaning of equal sign in StandardQueryParser

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.5, 4.8
• Component/s: modules/queryparser
• Lucene Fields: New, Patch Available
• Assignee: Unassigned
• Reporter: Martin Blom
• Created: 09/May/14 16:39
• Updated: 28/Aug/22 14:07

Description

The StandardSyntaxParser.jj has (undocumented?) support for the <, <=, > and => operators that generate a TermRangeQueryNode. The equal operator, however, behaves just like the colon and produces a regular Term node instead of a TermRangeQueryNode.

I've been using the attached patch in a project where we had to be able to query the exact value of a field and I'm hoping there is interest to apply it upstream.

(Note that the colon operator works just as before, producing TermQuery or PhraseQuery nodes.)