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From "Mark Miller (JIRA)" <>
Subject [jira] Commented: (LUCENE-2649) FieldCache should include a BitSet for matching docs
Date Fri, 17 Sep 2010 16:57:33 GMT


Mark Miller commented on LUCENE-2649:

bq. I was suggesting handling it the same way as FieldCache.Parser - it's set on the SortField.
But instead of just being able to control parsing of a term (which is too limited), it needs
to be able to control everything. (This would solve Shai's needs too)

We started down this path with LUCENE-831 - you could pass some *UnInverter on the sort field
if i remember right, so that pretty much everything could be overridden. It has come up a
lot - we really need this level of customizability eventually.

> FieldCache should include a BitSet for matching docs
> ----------------------------------------------------
>                 Key: LUCENE-2649
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Ryan McKinley
>             Fix For: 4.0
>         Attachments: 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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