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Date: Tue, 2 Jun 2009 06:12:07 -0700 (PDT)
From: "Michael McCandless (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Resolved: (LUCENE-1665) Remove SortField.AUTO
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     [ https://issues.apache.org/jira/browse/LUCENE-1665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless resolved LUCENE-1665.
----------------------------------------

    Resolution: Fixed

> Remove SortField.AUTO
> ---------------------
>
>                 Key: LUCENE-1665
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1665
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 2.9
>
>
> I'd like to remove SortField.AUTO... it's dangerous for Lucene to
> guess the type of your field, based on the first term it encounters.
> It can easily be wrong, and, whether it's wrong or right could
> suddenly change as you index different documents.
> It unexepctedly binds SortField to needing an IndexReader to do the
> guessing.
> It's caused various problems in the past (most recently, for me on
> LUCENE-1656) as we fix other issues/make improvements.
> I'd prefer that users of Lucene's field sort be explicit about the
> type that Lucene should cast the field to.  Someday, if we have
> optional strong[er] typing of Lucene's fields, such type information
> would already be known.  But in the meantime, I think users should be
> explicit.

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