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From "Ryan McKinley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2649) FieldCache should include a BitSet for matching docs
Date Thu, 23 Sep 2010 19:18:34 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12914177#action_12914177
] 

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

bq. Hmmm, that would also seem to transform the FieldCache into a more generic index reader
cache - not a bad idea! 

But is it a good one?!  This would let the FieldCache just focus on the synchronized cache
mechenism, and the each EntryCreator would need to do its own Parsing etc


Anyone know what the deal is with IndexReader:
{code:java}
  /** Expert */
  public Object getCoreCacheKey() {
    return this;
  }
{code}



> 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
>
>         Attachments: LUCENE-2649-FieldCacheWithBitSet.patch, LUCENE-2649-FieldCacheWithBitSet.patch,
LUCENE-2649-FieldCacheWithBitSet.patch, LUCENE-2649-FieldCacheWithBitSet.patch, LUCENE-2649-FieldCacheWithBitSet.patch
>
>
> 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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