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https://issues.apache.org/jira/browse/LUCENE-2671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated LUCENE-2671:
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Attachment: LUCENE-2671.patch
OK, here's a patch that caches the typed array as "docValues"
and moves the ShortComparator next to the other numeric comparators (since it
wasn't next to the others, I actually missed it in my first patch).
> Add sort missing first/last ability to SortField and ValueComparator
> --------------------------------------------------------------------
>
> Key: LUCENE-2671
> URL: https://issues.apache.org/jira/browse/LUCENE-2671
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Search
> Reporter: Ryan McKinley
> Assignee: Ryan McKinley
> Fix For: 4.0
>
> Attachments: LUCENE-2671-caches.patch, LUCENE-2671-caches.patch,
> LUCENE-2671-SortMissingLast.patch, LUCENE-2671-suppress-unchecked.patch,
> LUCENE-2671.patch
>
>
> When SortField and ValueComparator use EntryCreators (from LUCENE-2649) they
> use a special sort value when the field is missing.
> This enables lucene to implement 'sort missing last' or 'sort missing first'
> for numeric values from the FieldCache.
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