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From "Dejan Nenov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-666) TERM1 OR NOT TERM2 does not perform as expected
Date Thu, 31 Aug 2006 02:11:23 GMT
    [ http://issues.apache.org/jira/browse/LUCENE-666?page=comments#action_12431761 ] 
            
Dejan Nenov commented on LUCENE-666:
------------------------------------

I propose that we throw a ParseException - it seems very straightforward to do - any comments
/ concerns / objections?

> 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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