[GitHub] [arrow-adbc] paleolimbot commented on pull request #702: feat(python/adbc_driver_manager): experiment with using PyCapsules

["paleolimbot (via GitHub)" <gi...@apache.org>]

paleolimbot commented on PR #702:
URL: https://github.com/apache/arrow-adbc/pull/702#issuecomment-1561593694

   @jorisvandenbossche I didn't see your comment before writing that!
   
   I (experimentally) handle that in the R bindings by returning a stream wrapper and moving the statement to a pointer at a new address (i.e., invalidating any previous R objects that had been pointing to that). There is a function `nanoarrow_pointer_export()` that very specifically exports a schema/array/stream with a self-contained lifecycle (such that it can be passed anywhere safely). Before that happens, dependencies are managed via references (presumably that's what the capsule's Context is doing but that doesn't seem to be documented?).


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