Julian Hyde created CALCITE-6050:
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Summary: Add interface ImmutablePairList
Key: CALCITE-6050
URL: https://issues.apache.org/jira/browse/CALCITE-6050
Project: Calcite
Issue Type: Improvement
Reporter: Julian Hyde
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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