Struct BatchObjectHeaderWriter 

pub struct BatchObjectHeaderWriter { /* private fields */ }

Batch writer that collects multiple object headers in memory and flushes them as a single contiguous I/O pass.

This reduces the number of serialization passes when creating many datasets in parallel — each thread builds its ObjectHeaderWriter independently, then all headers are serialized together.

Implementations

impl BatchObjectHeaderWriter

pub fn new() -> Self

Create a new empty batch writer.

pub fn add(&mut self, writer: ObjectHeaderWriter)

Add a pre-built ObjectHeaderWriter to the batch.

pub fn len(&self) -> usize

Number of headers in the batch.

pub fn is_empty(&self) -> bool

Whether the batch is empty.

pub fn compute_sizes(&self) -> Vec<usize>

Compute the serialized size of each header without actually serializing. Returns sizes in the same order as headers were added.

pub fn serialize_all(&self) -> (Vec<u8>, Vec<usize>)

Serialize all headers into a single contiguous buffer. Returns (combined_bytes, offsets) where offsets[i] is the byte offset of header i within the combined buffer.

Trait Implementations

impl Default for BatchObjectHeaderWriter

fn default() -> Self

Returns the “default value” for a type.