Struct WriteSummary 

pub struct WriteSummary { /* private fields */ }

The result of a successfully finished writer.

Row, block, and sequence counts describe this writer session. A session from crate::Writer::open reports only what it appended, so a reopened file’s earlier rows and blocks are not counted again. Self::bytes_written is the exception: it is the length of the whole file, including anything earlier sessions wrote.

Implementations

impl WriteSummary

pub fn rows_written(&self) -> u64

The number of logical rows this session committed to data frames.

pub fn blocks_written(&self) -> u64

The number of data frames this session committed.

pub fn bytes_written(&self) -> u64

The final length of the whole file, including the prologue, the schema frame, and any frames written before this session.

pub fn last_sequence(&self) -> Option<u64>

The last data-frame sequence this session wrote, or None when it appended no batch.

A reopened session that publishes nothing reports None even though the file already holds data frames.

pub fn accounting(&self) -> WriteAccounting

The final row and byte accounting snapshot. finish has published and synchronized the final partial block, so buffered counts are zero.

Trait Implementations

impl Clone for WriteSummary

fn clone(&self) -> WriteSummary

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WriteSummary

impl Debug for WriteSummary

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for WriteSummary

impl PartialEq for WriteSummary

fn eq(&self, other: &WriteSummary) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for WriteSummary