Enum DenseReadiness 

pub enum DenseReadiness {
    Unavailable,
    Embedding,
    Ready,
}

0.8.20 Slice 20 (R-20-DR) — the ENGINE-SET readiness of the searchable→vector projection, per dev/design/record-lifecycle-protocol/projection-registry-and-async-embed.md §3.

Exactly three members. filterable and searchable→FTS are same-transaction (non-stale on commit) so they need no readiness axis at all; searchable→vector is async, rebuild-durable, so it carries one.

Naming discipline (load-bearing). The token pending is RESERVED for the admission axis (quarantine/trust — an app judgment). Index-readiness is a DIFFERENT, orthogonal dimension (a record can be active ∧ is_latest ∧ admissible yet dense_readiness = embedding), so this enum deliberately does not reuse that word: the non-ready member is Embedding, never Pending.

Variants

Unavailable

Engine-selected state for a session with no usable dense runtime (an absent embedder or refused vector equivalence). Caller input remains accept-inert; reads select this through the shared runtime predicate.

Embedding

At least one row in the vector projection’s row set has not yet reached a projection terminal — embedding is outstanding. This is the ONLY tolerable torn state: readiness embedding with the vector absent (the dense arm reads as partial and RRF under-ranks; it does not hide).

Ready

Every row in the vector projection’s row set has reached a projection terminal — the dense arm is caught up. Because the vector INSERT and the terminal record are written in ONE transaction ([commit_projection_outcomes]), Ready can never be observed with the vector row absent (design §4.1 invariant 1).

Implementations

impl DenseReadiness

pub fn as_str(self) -> &'static str

pub fn from_str_opt(value: &str) -> Option<Self>

The three accepted spellings. "pending" is DELIBERATELY not one of them (reserved for the admission axis) and so parses to None.

Trait Implementations

impl Clone for DenseReadiness

fn clone(&self) -> DenseReadiness

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DenseReadiness

impl Debug for DenseReadiness

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

Formats the value using the given formatter.

impl Eq for DenseReadiness

impl Ord for DenseReadiness

fn cmp(&self, other: &DenseReadiness) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for DenseReadiness

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for DenseReadiness

fn partial_cmp(&self, other: &DenseReadiness) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for DenseReadiness