feat(aggregate): add Java-compatible field aggregators - #463

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liangjie3138 wants to merge 12 commits into

alibaba:mainfrom

liangjie3138:feat/java-compatible-aggregators

Commits on Aug 4, 2026

feat(aggregate): add Java-compatible field aggregators

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revert field_roaring_bitmap64_agg
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refactor(aggregate): let Agg return Result instead of a parallel AggResult

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fix(aggregate): compare row kind in row equality and note the O(n^2) lookups

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fix(aggregate): keep binary ownership on the reversed null path

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refactor(aggregate): drop RowsEqual in favour of FieldAggregateUtils::Equals

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test(aggregate): port composite-type and boundary cases from the Java suite

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test(aggregate): port remaining nested-update and retract-contract cases from Java

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test(aggregate): add end-to-end write, compaction and read tests for new aggregators

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test(aggregate): keep the reader alive while reading sketch columns

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test(aggregate): use emplace_back in the collect map helper

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chore: remove stray test.txt

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