Function extract_float64

nodedb-strict/src/arrow_extract.rs:123–149

(
    decoder: &TupleDecoder,
    tuples: &[&[u8]],
    col_idx: usize,
    n: usize,
)

}

fn extract_float64(
    decoder: &TupleDecoder,
    tuples: &[&[u8]],
    col_idx: usize,
    n: usize,
) -> Result<ArrayRef, StrictError> {
    let (null_buf, null_count) = build_null_buffer(decoder, tuples, col_idx)?;
    let mut values = Vec::with_capacity(n);

    for tuple in tuples {
        if let Some(raw) = decoder.extract_fixed_raw(tuple, col_idx)? {
            values.push(f64::from_le_bytes(
                raw[..8]
                    .try_into()
                    .expect("extract_fixed_raw guarantees exact size"),
            ));
        } else {
            values.push(0.0);
        }
    }

    let array = Float64Array::new(
        values.into(),
        if null_count > 0 { Some(null_buf) } else { None },
    );
    Ok(Arc::new(array))
}

fn extract_bool(
    decoder: &TupleDecoder,