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From "Mark Miller (JIRA)" <>
Subject [jira] Commented: (LUCENE-1665) Remove SortField.AUTO
Date Wed, 27 May 2009 21:25:45 GMT


Mark Miller commented on LUCENE-1665:

+1. It doesnt work correctly with MultiSearcher either.

> Remove SortField.AUTO
> ---------------------
>                 Key: LUCENE-1665
>                 URL:
>             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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