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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-597) Strange results
Date Sat, 10 Jun 2006 20:59:30 GMT
     [ http://issues.apache.org/jira/browse/LUCENE-597?page=all ]
     
Hoss Man resolved LUCENE-597:
-----------------------------

    Resolution: Invalid

your second example is not equivilent to your first -- specificically the second example is
not actually a valid query, because bsubq2 is not a valid query (a BooleanQuery must contain
at least one non-prohibited clause ... queries must positively select something)

In the future, when you have questions about how/why something works (or seems to not work)
the way it does -- please start by emailing the Lucene Java Users mailing list, and only open
after some discussion amongst other users.

> Strange results
> ---------------
>
>          Key: LUCENE-597
>          URL: http://issues.apache.org/jira/browse/LUCENE-597
>      Project: Lucene - Java
>         Type: Test

>     Versions: 2.0.0
>  Environment: jdk 5
>     Reporter: rcolmegna

>
> I noted that these queris give different results.  But they are the same logical query
(or I'm in error?) !
> -------------------- 1---------------------------- (5 results)
> BooleanQuery query = new BooleanQuery();
> WildcardQuery subq1 = new WildcardQuery(new Term("dest","test*"));
> WildcardQuery subq2 = new WildcardQuery(new Term("dest","try*"));
> BooleanQuery bsubq2 = new BooleanQuery();
> WildcardQuery subq3 = new WildcardQuery(new Term("dest","12345*"));
> query.add(subq1, BooleanClause.Occur.MUST);
> query.add(subq2, BooleanClause.Occur.MUST);
> bsubq2.add(subq3, BooleanClause.Occur.MUST);
> query.add(bsubq2, BooleanClause.Occur.MUST_NOT);
> -------------------- 2---------------------------- (no results)
> BooleanQuery query = new BooleanQuery();
> WildcardQuery subq1 = new WildcardQuery(new Term("dest","test*"));
> WildcardQuery subq2 = new WildcardQuery(new Term("dest","try*"));
> BooleanQuery bsubq2 = new BooleanQuery();
> WildcardQuery subq3 = new WildcardQuery(new Term("dest","12345*"));
> query.add(subq1, BooleanClause.Occur.MUST);
> query.add(subq2, BooleanClause.Occur.MUST);
> bsubq2.add(subq3, BooleanClause.Occur.MUST_NOT);    // difference against 1st query
> query.add(bsubq2, BooleanClause.Occur.MUST);   // difference against 1st query
> Any suggests?
> TIA
> Roberto Colmegna

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