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From "Dejan Nenov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-72) [PATCH] Query parser inconsistency when using terms to exclude.
Date Thu, 31 Aug 2006 02:09:23 GMT
    [ http://issues.apache.org/jira/browse/LUCENE-72?page=comments#action_12431760 ] 
            
Dejan Nenov commented on LUCENE-72:
-----------------------------------

This makes sense. Iconcur that docs can be better - maybe we shoud lopen a separate JIRA issue
on that?

I propose this to be closed as "will not fix".


> [PATCH] Query parser inconsistency when using terms to exclude.
> ---------------------------------------------------------------
>
>                 Key: LUCENE-72
>                 URL: http://issues.apache.org/jira/browse/LUCENE-72
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: QueryParser
>    Affects Versions: 1.2
>         Environment: Operating System: All
> Platform: PC
>            Reporter: Carlos
>         Assigned To: Lucene Developers
>         Attachments: patch6.txt, patch7.txt, TestRegressionLucene72.java, TestRegressionLucene72.java
>
>
> Hi.
> The problem I am having occurs when using queryparser and also when building the
> query using the API.
> Assume that we want to look for documents about fruits or vegetables but 
> excluding tomatoes and bananas. I suppose the right query sould be:
> +(fruits vegetables) AND (-tomatoes -bananas)
> wich I think is equivalent to (if tou parse it and then print the query.toString
> ("") result that is what you get)
> +(fruits vegetables) +(-tomatoes -bananas)
> but the query doesn't work as expected, in fact the query that works is
> +(fruits vegetables) -(-tomatoes -bananas)
> which doesn´t really make much sense, because the second part seems to say:
> All documents where the condition "tomatoes is not present and bananas is not 
> present " is false, which means the opposite.
> In fact, second query works as (even if they look quite opposite):
> +(fruits vegetables) -tomatoes -bananas
> Hope someone could help, thanks

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