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Date: Wed, 27 Aug 2008 11:59:44 -0700 (PDT)
From: "Yonik Seeley (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Commented: (LUCENE-1061) Adding a factory to QueryParser to
 instantiate query instances
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    [ https://issues.apache.org/jira/browse/LUCENE-1061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12626253#action_12626253 ] 

Yonik Seeley commented on LUCENE-1061:
--------------------------------------

In this specific instance I think subclassing of QueryParser is the right way to go, and avoids introducing another class.  People are going to want more customizations than just changing the types of created subclauses, and will need to subclass for these other types of changes anyway.

> 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
>             Fix For: 2.4
>
>         Attachments: 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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