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https://issues.apache.org/jira/browse/LUCENE-1061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12626055#action_12626055
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Erik Hatcher commented on LUCENE-1061:
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What's wrong with just subclassing QueryParser and overriding the desired
methods? Either way someone wanting to provide custom Query implementations
will be writing effectively the same code, just with more indirection with this
method.
> 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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