feat: support native GROUP BY expressions (NativeGroupByWrapper) - #200
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Add the missing native wrapper for GROUP BY, mirroring NativeSelectWrapper and NativeSortWrapper (closes queritylib#198): - NativeGroupByWrapper<T> (querity-api) with Querity.groupByNative(...) factory - GroupBySpecification<T> functional interface (querity-jpa-common), the deferred (Root, CriteriaBuilder) -> Expression counterpart of OrderSpecification/SelectionSpecification - JpaNativeGroupByWrapper + dispatch in JpaGroupBy.of() This allows grouping by expressions the querity model cannot express (e.g. jsonb_extract_path_text over a jsonb column) so that native selections can be combined with aggregates computed per group.
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Add the missing native wrapper for GROUP BY, mirroring NativeSelectWrapper and NativeSortWrapper (closes #198):
This allows grouping by expressions the querity model cannot express (e.g. jsonb_extract_path_text over a jsonb column) so that native selections can be combined with aggregates computed per group.