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https://issues.apache.org/jira/browse/LUCENE-2671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921763#action_12921763
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Ryan McKinley commented on LUCENE-2671:
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bq. This is not true, it returns DocTermCreator.DocTermsImpl and gives an ugly
cast
DocTermCreator.DocTermsImpl (a private class only accessible within
DocTermCreator) extends DocTerms and so it is true.
I won't argue about the ugly cast. :)
in #1023379 I changed DocTermsCreator and DocTermsIndexCreator to bind directly
to the class (rather then T extends XXX) This is a bit more clear, but does
not let you extend the generic API (not that you need to)
> 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-SortMissingLast.patch, LUCENE-2671-suppress-unchecked.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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