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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1061) Adding a factory to QueryParser to instantiate query instances
Date Thu, 28 Aug 2008 09:59:45 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1061?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless updated LUCENE-1061:
---------------------------------------

    Attachment: LUCENE-1061.patch

bq. The hoops we jump through because we're in Java.... sheesh.  :)

Alas, yes... maybe we should all switch to Erlang!  ;)

bq. What might be even more interesting is to make the newXXX methods return Query instead
of a specific type. I'm not sure if that would work in all cases (surely not for BooleanQuery),
but might for most of 'em.

OK I was able to do this with many of them -- attached new patch.  Only PhraseQuery, MultiPhraseQuery,
BooleanQuery/Clause required strong typing.  All others now return Query.

> Adding a factory to QueryParser to instantiate query instances
> --------------------------------------------------------------
>
>                 Key: LUCENE-1061
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1061
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: QueryParser
>    Affects Versions: 2.3
>            Reporter: John Wang
>            Assignee: Michael McCandless
>             Fix For: 2.4
>
>         Attachments: LUCENE-1061.patch, LUCENE-1061.patch, lucene_patch.txt
>
>
> With the new efforts with Payload and scoring functions, it would be nice to plugin custom
query implementations while using the same QueryParser.
> Included is a patch with some refactoring the QueryParser to take a factory that produces
query instances.

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