Function build_reader

datafusion/datasource-avro/src/source.rs:262–275

(
        name: &'_ str,
        projection: Option<Vec<usize>>,
    )

    use std::io::BufReader;

    fn build_reader(
        name: &'_ str,
        projection: Option<Vec<usize>>,
    ) -> Reader<BufReader<File>> {
        let testdata = datafusion_common::test_util::arrow_test_data();
        let filename = format!("{testdata}/avro/{name}");
        let mut builder = ReaderBuilder::new().with_batch_size(64);
        if let Some(proj) = projection {
            builder = builder.with_projection(proj);
        }
        builder
            .build(BufReader::new(File::open(filename).unwrap()))
            .unwrap()
    }

    fn get_col<'a, T: 'static>(
        batch: &'a RecordBatch,