GH-184: Add Arrow C Data Interface import foundation#603
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This was referenced Jul 6, 2026
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## main #603 +/- ##
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Add ArrowSchema and ArrowArray ABI structs plus C Data import for null and primitive arrays. Root struct arrays are exposed as Tables.jl column tables with DataAPI metadata. Add validation for pointer layout, child counts, buffers, offset arithmetic, metadata bounds, dictionary pointer consistency, release idempotency, and reads after release. Keep aligned imported buffers rooted behind a shared owner, and mirror arrow-rs by copying misaligned fixed width buffers into aligned storage before typed access. The copy and collect methods materialize Julia owned arrays. Adjust dictionary encoding offsets for non 1-based reference pools so categorical pools with missing values keep correct dictionary indices. Co-authored-by: Robert Buessow <robert.buessow@relational.ai> Co-authored-by: Olle Martensson <olle.martensson@gmail.com> Generated-by: OpenAI Codex
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Refs #184.
Adds the import foundation for the Arrow C Data Interface:
ArrowSchemaandArrowArraydefinitions with layout coverage.Arrow.from_c_data,Arrow.from_c_data_table, andArrow.release_c_data.copy/collect.This intentionally leaves broader type support and export support for follow up PRs.
Validation:
julia --project=. -e 'using Arrow, Test, Tables, DataAPI; include("test/cdata.jl")'julia --project=. --check-bounds=yes -e 'using Arrow, Test, Tables, DataAPI; include("test/cdata.jl")'julia --project=. -e 'using Pkg; Pkg.test()'julia --project=. -e 'using Pkg; Pkg.test(; julia_args=["--check-bounds=yes"])'git diff --check upstream/main...HEADAI assistance was used and the generated changes were reviewed before submission.
Generated-by: OpenAI Codex