Jack Krupansky created SOLR-3740:
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Summary: ExtendedDismaxQParser (edismax) does not obey q.op for
parenthesized sub-queries
Key: SOLR-3740
URL: https://issues.apache.org/jira/browse/SOLR-3740
Project: Solr
Issue Type: Bug
Components: query parsers
Affects Versions: 4.0-BETA, 3.6.1
Reporter: Jack Krupansky
Fix For: 4.0
For a query such as "cat dog (fox bat fish)" with &q.op=AND, the default query
operator is only set to AND for the top-level query, and not for the
parenthesize sub-query. This is not documented behavior and rather surprising.
This happens because edismax only simulates the default operator by forcing
"mm" (minMatch) to 100% for the top-level BooleanQuery alone and never sets the
default query operator when it invokes the classic Lucene Query parser which in
turn is performing parsing and query generation for the parenthesize sub-query.
One solution is for edismax to always set the default query operator when
calling the classic Lucene query parser, or at least when q.op=AND.
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