Struct NullableEncoder 

pub struct NullableEncoder<'a> {
    encoder: Box<dyn Encoder + 'a>,
    nulls: Option<NullBuffer>,
}

An encoder + a null buffer. This is packaged together into a wrapper struct to minimize dynamic dispatch for null checks.

Fields

encoder: Box<dyn Encoder + 'a>

nulls: Option<NullBuffer>

Implementations

impl<'a> NullableEncoder<'a>

pub fn new( encoder: Box<dyn Encoder + 'a>, nulls: Option<NullBuffer>, ) -> NullableEncoder<'a>

Create a new encoder with a null buffer.

pub fn encode(&mut self, idx: usize, out: &mut Vec<u8>)

Encode the value at index idx to out.

pub fn is_null(&self, idx: usize) -> bool

Returns whether the value at index idx is null.

pub fn has_nulls(&self) -> bool

Returns whether the encoder has any nulls.

Trait Implementations

impl Encoder for NullableEncoder<'_>

fn encode(&mut self, idx: usize, out: &mut Vec<u8>)

Encode the non-null value at index idx to out.