Struct Reader 

pub struct Reader { /* private fields */ }

Reads committed native column pages without holding the table in memory.

Implementations

impl Reader

pub fn open(path: impl AsRef<Path>) -> Result<Self>

Opens the highest valid directory slot.

Errors

If the file has no valid committed directory or a directory pointer is out of bounds.

pub fn table(&self) -> &Table

The committed table directory.

pub fn read(&self, stripe: usize, columns: &[usize]) -> Result<Chunk>

Reads only the named columns from one stripe.

Errors

If a stripe, column, page, or checksum is invalid.

pub fn skips(&self, stripe: usize, probes: &[Probe]) -> bool

Whether persisted bounds prove that a stripe cannot match the predicates.

Trait Implementations

impl Clone for Reader

fn clone(&self) -> Reader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Reader

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

Formats the value using the given formatter.