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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3280) Add new bit set impl for caching filters
Date Wed, 06 Jul 2011 16:25:18 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13060668#comment-13060668
] 

Michael McCandless commented on LUCENE-3280:
--------------------------------------------

OK I'll add getBits().

> Add new bit set impl for caching filters
> ----------------------------------------
>
>                 Key: LUCENE-3280
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3280
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 3.4, 4.0
>
>         Attachments: LUCENE-3280.patch
>
>
> I think OpenBitSet is trying to satisfy too many audiences, and it's
> confusing/error-proned as a result.  It has int/long variants of many
> methods.  Some methods require in-bound access, others don't; of those
> others, some methods auto-grow the bits, some don't.  OpenBitSet
> doesn't always know its numBits.
> I'd like to factor out a more "focused" bit set impl whose primary
> target usage is a cached Lucene Filter, ie a bit set indexed by docID
> (int, not long) whose size is known and fixed up front (backed by
> final long[]) and is always accessed in-bounds.

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