API for more ergonomic construction of RecordBatchOptions

[alamb]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
When creating a RecordBatchOptions object it would be nice to use a standard Rust patterns of either

A builder interface :

let options = RecordBatchOptions::new()
  .with_rows_count(Some(row_count))

Or Default::default() for pub structs:

let options = RecordBatchOptions{
      row_count:Some(row_count),
      ..Default::default()
    };

However, there is no builder interface provided and RecordBatchOptions is marked as non-exhaustive so you get this error

error[E0639]: cannot create non-exhaustive struct using struct expression
   --> /home/isidentical/projects/arrow-datafusion/datafusion/core/src/physical_plan/coalesce_batches.rs:295:19
    |
295 |       let options = RecordBatchOptions {
    |  ___________________^
296 | |         row_count: Some(row_count),
297 | |         ..Default::default()
298 | |     };
    | |_____^

For more information about this error, try `rustc --explain E0639`.

This means you have to use mut like:

  let mut options = RecordBatchOptions::default();
  options.row_count = Some(row_count);

Describe the solution you'd like
Add a builder interface for RecordBatchOptions

Additional context

See comments from @isidentical apache/datafusion#3439 (comment)

[alamb]

I think this is a good first issue because the API is relatively new, adding a builder interface is backwards compatible, and this would be a good way to learn the codebase and process in arrow

[askoa]

I'll pick this one!

[askoa]

let options = RecordBatchOptions{
      row_count:Some(row_count),
      ..Default::default()
    };

I don't think the above option is possible due to non-exhaustive clause. There is already default implemented for this struct and not working outside of the crate.

Edit: If the builder pattern is implemented then there'll be two forms of initialization for RecordBatchOptions as Default is already implemented and working within the crate. My suggestion is to remove the Default and retain only the Builder. The impact will be within the crate as Default cannot be used outside the crate. Let me know if this is okay.

arrow-rs/arrow/src/record_batch.rs

Lines 416 to 423 in 2a0fc77

	impl Default for RecordBatchOptions {
	fn default() -> Self {
	Self {
	match_field_names: true,
	row_count: None,
	}
	}
	}