[LUCENE-7597] MultiFieldQueryParser does not honor default operator when there is a special character

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 6.3
• Component/s: core/queryparser
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: John Wang
• Created: 17/Dec/16 08:42
• Updated: 28/Aug/22 15:07

Description

simple code snippet

MultiFieldQueryParser mp = new MultiFieldQueryParser(new String[]

{"test"}

, new StandardAnalyzer());
mp.setDefaultOperator(Operator.AND);
System.out.println(mp.parse(qstring));

if qstring is just 2 tokens, e.g: "you me", behavior is correct:

+(test:you) +(test:me)

now if qstring contains 2 tokens connected by a special char, e.g.: "you&me", behavior is always OR, e.g.

(test:you) (test:me)