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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2014/11/10 18:50:33 UTC

[jira] [Created] (CALCITE-460) Add ImmutableBitSet and replace uses of BitSet

Julian Hyde created CALCITE-460:
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             Summary: Add ImmutableBitSet and replace uses of BitSet
                 Key: CALCITE-460
                 URL: https://issues.apache.org/jira/browse/CALCITE-460
             Project: Calcite
          Issue Type: Bug
            Reporter: Julian Hyde
            Assignee: Julian Hyde


Calcite makes heavy use of bit sets. java.util.BitSet has a convenient API but (a) is mutable, (b) uses quite a lot of memory, (c) is not iterable.

Propose to implement ImmutableBitSet, which addresses those deficiencies.



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