[ARROW-5191] [Rust] Expose CSV and JSON reader schemas

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/21667
• Assignee: Neville Dipale
• Reporter: Neville Dipale
• Created: 21/Apr/19 21:20
• Updated: 11/Jan/23 07:38
• Resolved: 25/Apr/19 17:34

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

Issue Links

• is related to: ARROW-5181 [Rust] Create Arrow File reader
• links to: GitHub Pull Request #4181