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From Earwin Burrfoot <ear...@gmail.com>
Subject Re: Sorting and multi-term fields again
Date Mon, 02 Mar 2009 18:05:56 GMT
My opinion is that if you want to enable sorting on multi-term fields,
you need a pluggable selection policy. I see someone wanting
biggest/smallest term represent a document when sorting. Or maybe a
function of the terms.

On Mon, Mar 2, 2009 at 20:34, Uwe Schindler <uwe@thetaphi.de> wrote:
> I updated yesterday https://issues.apache.org/jira/browse/LUCENE-1372 (added
> a relates), but my comment was not posted to this list (maybe relation
> updates in JIRA issues will not post to java-dev?).
>
> When working with Shalin Shekhar Mangar on SOLR-940 (where sorting of
> TrieRange fields is needed), I again thought about the issue. Maybe we could
> change FieldCache to only put the very first term from a field of the
> document into the cache, enabling sorting against this field. If possible,
> this would be very nice and in my opinion better that the idea proposed in
> the issue.
>
> For TrieRange the order proposed in this issue would also be fine, as the
> highest precision field terms are always before the lower precision ones in
> the global TermEnum, so if FieldCache would sort against the *first* term
> and not hit any exceptions in searcher when more terms than documents are
> available, I would also be happy.
>
> Any comments or ideas?
>
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
>
>
>
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Kirill Zakharenko/Кирилл Захаренко (earwin@gmail.com)
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