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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-3280) Add new bit set impl for caching filters
Date Wed, 06 Jul 2011 14:41:16 GMT
Add new bit set impl for caching filters
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                 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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