wjones127 opened a new pull request, #3582:
URL: https://github.com/apache/arrow-rs/pull/3582
# Which issue does this PR close?
Closes #3540.
# Rationale for this change
Rust is a good candidate for implementing an ADBC driver, but doing so
involves quite a bit of `unsafe`. It would be nice to keep that `unsafe` code
consolidated in one place, and allow implementors to interact instead with APIs
that are more canonical Rust.
# What changes are included in this PR?
The PR adds a new `arrow_adbc` crate with three modules:
* `ffi`: contains the FFI types corresponding to each of the structs in
[adbc.h](https://github.com/apache/arrow-adbc/blob/main/adbc.h).
* `error`: contains traits relevant to translating Rust error enums into
the `FFI_AdbcError` struct and `AdbcStatusCode` enum.
* `interface`: provides Rust traits to define behavior for each struct and
a macro `adbc_api!()` that generates the ADBC API. Users simply have to
implement each of the traits and call the macro.
# Are there any user-facing changes?
These are entirely new APIs. This PR will include documentation for all APIs.
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