Lee Hinman created LUCENE-6298:
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             Summary: empty SimpleQueryParser query should return empty 
BooleanQuery
                 Key: LUCENE-6298
                 URL: https://issues.apache.org/jira/browse/LUCENE-6298
             Project: Lucene - Core
          Issue Type: Bug
          Components: modules/queryparser
    Affects Versions: 5.0
            Reporter: Lee Hinman
            Priority: Minor


In order to be consistent with QueryParser, SimpleQueryParser should return an 
empty BooleanQuery instead of null when the analyzed query state is null (if 
the query text is entirely removed during analysis, for instance).

Long term it would also be nice to be able to return a MatchNoDocsQuery (or 
something like that) instead of using null as a stand-in value for this.



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