Struct SharedDocumentRow 

pub struct SharedDocumentRow { /* private fields */ }

A positional projection that shares an in-memory document’s stored values.

Persistent backends still decode owned rows through the ordinary bulk methods. The memory backend exposes this optional representation so a physical scan can carry storage-owned values through joins without cloning them.

Implementations

impl SharedDocumentRow

pub fn project<'a>(&'a self, output: &mut Vec<&'a Value>)

Populate a reusable borrowed projection for predicate evaluation.

pub fn with_projected<R>(&self, visitor: impl FnOnce(&[&Value]) -> R) -> R

Borrow the projection through an inline reference array. Relational tables normally have far fewer than 32 requested fields, so predicate evaluation needs no scratch allocation.

pub fn indexed_values(&self) -> (&[Value], &[usize])

Borrow the storage-owned values and the projection from requested field positions to value slots. A usize::MAX projection slot represents a missing field and therefore SQL NULL.

pub fn into_parts(self) -> (Arc<Vec<Value>>, Arc<[usize]>)

Transfer the shared vector and its fragment-local projection into a physical row without cloning either allocation.

Trait Implementations

impl Clone for SharedDocumentRow

fn clone(&self) -> SharedDocumentRow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SharedDocumentRow

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

Formats the value using the given formatter.

impl PartialEq for SharedDocumentRow

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SharedDocumentRow