[jira] Commented: (LUCENE-2649) FieldCache should include a BitSet for matching docs

["Ryan McKinley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-2649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910446#action_12910446 ] 

Ryan McKinley commented on LUCENE-2649:
---------------------------------------

See some discussion here:
http://search.lucidimagination.com/search/document/b6a531f7b73621f1/trie_fields_and_sortmissinglast

> FieldCache should include a BitSet for matching docs
> ----------------------------------------------------
>
>                 Key: LUCENE-2649
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2649
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Ryan McKinley
>             Fix For: 4.0
>
>
> The FieldCache returns an array representing the values for each doc.  However there is no way to know if the doc actually has a value.
> This should be changed to return an object representing the values *and* a BitSet for all valid docs.

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