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https://issues.apache.org/jira/browse/LUCENE-7597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15757257#comment-15757257
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John Wang commented on LUCENE-7597:
-----------------------------------
Made the following change to getMultiFieldQuery() method and seems to work as
expected.
@Override
protected Query getMultiFieldQuery(List<Query> queries) throws ParseException
{
if (queries.isEmpty()) {
return null; // all clause words were filtered away by the analyzer.
}
BooleanQuery.Builder query = newBooleanQuery();
query.setDisableCoord(true);
BooleanClause.Occur occur = getDefaultOperator() == OR_OPERATOR ?
BooleanClause.Occur.SHOULD : BooleanClause.Occur.MUST;
for (Query sub : queries) {
query.add(sub, occur);
}
return query.build();
}
> MultiFieldQueryParser does not honor default operator when there is a special
> character
> ---------------------------------------------------------------------------------------
>
> Key: LUCENE-7597
> URL: https://issues.apache.org/jira/browse/LUCENE-7597
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/queryparser
> Affects Versions: 6.3
> Reporter: John Wang
>
> 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)
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