[jira] Resolved: (LUCENE-538) Using WildcardQuery with MultiSearcher, and Boolean MUST_NOT clause

["Robert Muir (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir resolved LUCENE-538.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 3.1

This is now fixed by Mike's cleanup to MultiSearcher etc, which fixes this combine/rewrite bug

> Using WildcardQuery with MultiSearcher, and Boolean MUST_NOT clause
> -------------------------------------------------------------------
>
>                 Key: LUCENE-538
>                 URL: https://issues.apache.org/jira/browse/LUCENE-538
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Search
>    Affects Versions: 1.9
>         Environment: Ubuntu Linux, java version 1.5.0_04
>            Reporter: Helen Warren
>            Priority: Minor
>             Fix For: 3.1
>
>         Attachments: TestMultiSearchWildCard.java
>
>
> We are searching across multiple indices using a MultiSearcher. There seems to be a problem when we use a WildcardQuery to exclude documents from the result set. I attach a set of unit tests illustrating the problem.
> In these tests, we have two indices. Each index contains a set of documents with fields for 'title',  'section' and 'index'. The final aim is to do a keyword search, across both indices, on the title field and be able to exclude documents from certain sections (and their subsections) using a
> WildcardQuery on the section field.
>  
>  e.g. return documents from both indices which have the string 'xyzpqr' in their title but which do not lie
>  in the news section or its subsections (section = /news/*).
>  
> The first unit test (testExcludeSectionsWildCard) fails trying to do this.
>  If we relax any of the constraints made above, tests pass:
>  
> * Don't use WildcardQuery, but pass in the news section and it's child section to exclude explicitly (testExcludeSectionsExplicit)</li>
> * Exclude results from just one section, not it's children too i.e. don't use WildcardQuery(testExcludeSingleSection)</li>
> * Do use WildcardQuery, and exclude a section and its children, but just use one index thereby using the simple
>    IndexReader and IndexSearcher objects (testExcludeSectionsOneIndex).
> * Try the boolean MUST clause rather than MUST_NOT using the WildcardQuery i.e. only include results from the /news/ section
>    and its children.

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