[Rust] Expose CSV and JSON reader schemas #21667
Description
It's sometimes convenient to be able to view a datasource's schema without reading the first record batch. This is a proposal to create a pub fn schema(&self) -> Arc<Schema> on the various readers that we support.
I think this would also enable schema inference in datafusion
Reporter: Neville Dipale / @nevi-me
Assignee: Neville Dipale / @nevi-me
Related issues:
- [Rust] Create Arrow File reader (is related to)
PRs and other links:
Note: This issue was originally created as ARROW-5191. Please see the migration documentation for further details.