wjones127 commented on PR #3582:
URL: https://github.com/apache/arrow-rs/pull/3582#issuecomment-1408946429
> Can you confirm that the usecase of this project (adbc in arrow-rs) is to
make it easier for users to implement (in Rust) the ADBC interface for a
specific database)?
There are two use cases for this project, but this PR will only add the
first:
1. Implement ADBC drivers as an interface for querying a particular
database.
2. (Not for this PR) Provide a driver manager, that allows loading and
using an ADBC driver. ADBC drivers can either be initialized from a specific
function (if statically linking to a particular driver) or by dynamically
loading the init function (if dynamically loading drivers).
I am starting with the first since that's my use case, but will probably add
the second in a follow-up soon because it makes testing a lot easier. 😄
> It seems this is likely the most useful for databases that were already
implemented in Rust and thus their "native" client drivers and codebase are
written in Rust as well (for example GreptimeDB, IOx, and Ballista).
Yes, but except for in-memory ones, there's not a hard rule that you have to
write the client in the same language as the server. The main requirement is
that the language can produce dynamic libraries, which I think excludes Java
for example. The recommended stack for an Arrow-native database is use ADBC as
the client-facing API, and the client-server communication in FlightSQL.
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