Struct Writer 

pub struct Writer { /* private fields */ }

Appends pages and commits a new directory for one table.

Implementations

impl Writer

pub fn create( path: impl AsRef<Path>, name: impl Into<String>, fields: Vec<Field>, ) -> Result<Self>

Creates a new v7 file and its first table.

Errors

If the file exists, a field has no v7 scalar encoding, or the path cannot be written.

pub fn append(&mut self, chunk: &Chunk) -> Result<()>

Writes one chunk as independently readable column pages.

Errors

If its width or types differ from the declared table, or a page exceeds its bound.

pub fn append_at(&mut self, order: (u64, u64), chunk: &Chunk) -> Result<()>

Writes one chunk and records its source position for directory ordering.

Pages may be encoded by parallel pipeline instances and reach the file in completion order. Their directory entries are sorted by this key at commit, so a scan still observes source order without holding the page bytes until earlier work finishes.

Errors

The same as Self::append.

pub fn finish(self) -> Result<Table>

Commits the directory and syncs the file before publishing its header slot.

Errors

If directory encoding, writing, or syncing fails.

Trait Implementations

impl Debug for Writer

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

Formats the value using the given formatter.