timsaucer opened a new pull request, #105:
URL: https://github.com/apache/datafusion-java/pull/105
> **Stacked PR series (6 parts) — splitting the Spark DataSource V2
connector.**
> All six target `main`. They build on each other, so **review and merge in
order** — until the earlier parts merge, this PR's diff includes their changes
too.
>
> 1. Cargo workspace + `native-common` extraction
> **➤ 2.** `datafusion-spark-bridge` Rust SDK
> 3. Spark connector Java SPI
> 4. Spark DataSource V2 connector (Scala)
> 5. Bridge scaffold generator
> 6. End-to-end examples
## Purpose
Add the `datafusion-spark-bridge` Rust SDK — the foundation a domain
connector ("bridge") builds on. Its `export_bridge!` macro generates the JNI
entry points the JVM side calls (schema probe, scan create/execute/close); it
also bundles the options decoder, scan glue, and the Arrow **type-widening**
layer for Spark type compatibility.
Self-contained; depends only on `native-common`.
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