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From "Dejan Nenov (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-666) TERM1 OR NOT TERM2 does not perform as expected
Date Tue, 29 Aug 2006 23:33:22 GMT
TERM1 OR NOT TERM2 does not perform as expected
-----------------------------------------------

                 Key: LUCENE-666
                 URL: http://issues.apache.org/jira/browse/LUCENE-666
             Project: Lucene - Java
          Issue Type: Bug
          Components: QueryParser
    Affects Versions: 2.0.0
         Environment: Windows XP, JavaCC 4.0, JDK 1.5
            Reporter: Dejan Nenov
         Attachments: TestAornotB.java

test:
    [junit] Testsuite: org.apache.lucene.search.TestAornotB
    [junit] Tests run: 3, Failures: 1, Errors: 0, Time elapsed: 0.39 sec

    [junit] ------------- Standard Output ---------------
    [junit] Doc1 = A B C
    [junit] Doc2 = A B C D
    [junit] Doc3 = A   C D
    [junit] Doc4 =   B C D
    [junit] Doc5 =     C D
    [junit] -------------------------------------------------
    [junit] With query "A OR NOT B" we expect to hit
    [junit] all documents EXCEPT Doc4, instead we only match on Doc3.
    [junit] While LUCENE currently explicitly does not support queries of
    [junit] the type "find docs that do not contain TERM" - this explains
    [junit] not finding Doc5, but does not justify elimnating Doc1 and Doc2
    [junit] -------------------------------------------------
    [junit]  the fix shoould likely require a modification to QueryParser.jj
    [junit]  around the method:
    [junit]  protected void addClause(Vector clauses, int conj, int mods, Query q)
    [junit] Query:c:a -c:b hits.length=1
    [junit] Query Found:Doc[0]= A C D
    [junit] 0.0 = (NON-MATCH) Failure to meet condition(s) of required/prohibited clause(s)
    [junit]   0.6115718 = (MATCH) fieldWeight(c:a in 1), product of:
    [junit]     1.0 = tf(termFreq(c:a)=1)
    [junit]     1.2231436 = idf(docFreq=3)
    [junit]     0.5 = fieldNorm(field=c, doc=1)
    [junit]   0.0 = match on prohibited clause (c:b)
    [junit]     0.6115718 = (MATCH) fieldWeight(c:b in 1), product of:
    [junit]       1.0 = tf(termFreq(c:b)=1)
    [junit]       1.2231436 = idf(docFreq=3)
    [junit]       0.5 = fieldNorm(field=c, doc=1)

    [junit] 0.6115718 = (MATCH) sum of:
    [junit]   0.6115718 = (MATCH) fieldWeight(c:a in 2), product of:
    [junit]     1.0 = tf(termFreq(c:a)=1)
    [junit]     1.2231436 = idf(docFreq=3)
    [junit]     0.5 = fieldNorm(field=c, doc=2)

    [junit] 0.0 = (NON-MATCH) Failure to meet condition(s) of required/prohibited clause(s)
    [junit]   0.0 = match on prohibited clause (c:b)
    [junit]     0.6115718 = (MATCH) fieldWeight(c:b in 3), product of:
    [junit]       1.0 = tf(termFreq(c:b)=1)
    [junit]       1.2231436 = idf(docFreq=3)
    [junit]       0.5 = fieldNorm(field=c, doc=3)

    [junit] Query:c:a (-c:b) hits.length=3
    [junit] Query Found:Doc[0]= A B C
    [junit] Query Found:Doc[1]= A B C D
    [junit] Query Found:Doc[2]= A C D
    [junit] 0.3057859 = (MATCH) product of:
    [junit]   0.6115718 = (MATCH) sum of:
    [junit]     0.6115718 = (MATCH) fieldWeight(c:a in 1), product of:
    [junit]       1.0 = tf(termFreq(c:a)=1)
    [junit]       1.2231436 = idf(docFreq=3)
    [junit]       0.5 = fieldNorm(field=c, doc=1)
    [junit]   0.5 = coord(1/2)

    [junit] 0.3057859 = (MATCH) product of:
    [junit]   0.6115718 = (MATCH) sum of:
    [junit]     0.6115718 = (MATCH) fieldWeight(c:a in 2), product of:
    [junit]       1.0 = tf(termFreq(c:a)=1)
    [junit]       1.2231436 = idf(docFreq=3)
    [junit]       0.5 = fieldNorm(field=c, doc=2)
    [junit]   0.5 = coord(1/2)

    [junit] 0.0 = (NON-MATCH) product of:
    [junit]   0.0 = (NON-MATCH) sum of:
    [junit]   0.0 = coord(0/2)

    [junit] ------------- ---------------- ---------------
    [junit] Testcase: testFAIL(org.apache.lucene.search.TestAornotB):   FAILED
    [junit] resultDocs =A C D expected:<3> but was:<1>
    [junit] junit.framework.AssertionFailedError: resultDocs =A C D expected:<3> but
was:<1>
    [junit]     at org.apache.lucene.search.TestAornotB.testFAIL(TestAornotB.java:137)


    [junit] Test org.apache.lucene.search.TestAornotB FAILED

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