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https://issues.apache.org/jira/browse/CALCITE-6050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-6050.
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Resolution: Fixed
Fixed in
[95408cc7|https://github.com/julianhyde/calcite/commit/95408cc71fb7cc2742d09dac1a2fe113daf5328f].
> Add interface ImmutablePairList
> -------------------------------
>
> Key: CALCITE-6050
> URL: https://issues.apache.org/jira/browse/CALCITE-6050
> Project: Calcite
> Issue Type: Improvement
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Priority: Major
> Fix For: 1.36.0
>
>
> In CALCITE-5706, we added {{class PairList}}; in this change, we add
> {{ImmutablePairList}}, which is optimized for cases where the list does not
> change after creation. The implementation stores entries in an array, rather
> than a list, saving memory allocations and indirection.
> {{PairList}} and {{ImmutablePairList}} are now interfaces; this allows us to
> have multiple implementations that do not have a common base class.
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