Function to_arrow2

pub fn to_arrow2<T: Serialize>(
    fields: &[Field],
    items: T,
) -> Result<Vec<Box<dyn Array>>>

Build arrow2 arrays from the given items (requires one of the arrow2-* features)

items should be given in the form a list of records (e.g., a vector of structs). To serialize items encoding single values consider the Items wrapper.

To build arrays record by record use ArrayBuilder.

use arrow2::datatypes::Field;
use serde::{Serialize, Deserialize};
use serde_arrow::schema::{SchemaLike, TracingOptions};

#[derive(Serialize, Deserialize)]
struct Record {
    a: Option<f32>,
    b: u64,
}

let items = vec![
    Record { a: Some(1.0), b: 2},
    // ...
];

let fields = Vec::<Field>::from_type::<Record>(TracingOptions::default())?;
let arrays = serde_arrow::to_arrow2(&fields, &items)?;