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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 5456] New: - logic error in QueryParser and in BooleanQuery !
Date Mon, 17 Dec 2001 13:57:37 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5456

logic error in QueryParser and in BooleanQuery !

           Summary: logic error in QueryParser and in BooleanQuery !
           Product: Lucene
           Version: 1.0.2
          Platform: PC
        OS/Version: Windows NT/2K
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: QueryParser
        AssignedTo: lucene-dev@jakarta.apache.org
        ReportedBy: bitl@mail.ru


I think there's "ideo-logic" error in QueryParser:
  (and in BooleanQuery!)

  when I search for smth. like "love OR NOT onion"
  I receive the same result as I search for "love AND NOT onion".
  IMHO it's wrong.

  Let we have 4 docs:
  doc1: "Love is life"
  doc2: "Java is pretty nice language"
  doc3: "C++ is powerful, but unsafe"
  doc4: "Onion and love sometimes are not compatoble"

  So, if search for "love OR NOT onion"
  result must be: doc1, doc2, doc3.
  (_everything_ where the word "onion" isn't present, because we say "OR")

  but, we have the same result as in case of search for:
  "love AND NOT onion":
  result: doc1.

  
  So, I have created own parser, using BooleanQuery, that would help
  me, but unfortunatelly it wouldn't.

  Please ! Fix it ASAYK !

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