Struct ProjectionVector 

pub struct ProjectionVector {
    pub embedder: Option<String>,
    pub dense_readiness: Option<DenseReadiness>,
}

0.8.20 Slice 15d (R-20-PR) — the searchable→vector sub-target selector.

Slice 20 (R-20-DR) attached dense_readiness HERE, additively: this sub-object is STORED by 15d (so the shape exists and a caller can declare a vector projection); Slice 20 hangs the READ-METADATA readiness flag off it. Nothing in 15d’s persisted shape changed (the registry columns vector_embedder + vector_declared still round-trip the declaration) — readiness is DERIVED, never stored, so there is no schema step and no separate flag that could tear (see [derive_dense_readiness]).

Fields

embedder: Option<String>

Optional embedder override; None ⇒ the engine’s shipped default.

dense_readiness: Option<DenseReadiness>

0.8.20 Slice 20 (R-20-DR) — READ METADATA, engine-set. Populated by Engine::read_projections; None on every caller-authored spec.

It is not part of the declaration: configure_projections neither stores nor honours it (see [StoredProjection::from_spec], which reads only embedder), so a value supplied here is INERT — the engine always reports the derived truth. This is deliberately accept-inert rather than hard-reject so read.projections output stays feedable straight back into configure_projections (the fix-4 read→configure round-trip, which both bindings pin with a test).

0.8.20 Slice 23 (R-20-SV) correction (TC-39 class). This doc used to justify accept-inert by analogy with “the already-audited accept-inert ruling on an fts/vector sub-object declared without the searchable role”. That ruling is OVERRULED — the HITL ruled the shape an INVALID SPEC on 2026-07-24 and [apply_projection_config] now rejects it with EngineError::WriteValidation. dense_readiness accept-inert is UNCHANGED and stands on its own footing: it is engine-set READ METADATA, never part of the declaration, so there is nothing about it to reject.

The bindings still HARD-REJECT the shapes that could not round-trip: a readiness supplied with vector = false, and any spelling outside {unavailable, embedding, ready}.

Trait Implementations

impl Clone for ProjectionVector

fn clone(&self) -> ProjectionVector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectionVector

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

Formats the value using the given formatter.

impl Default for ProjectionVector

fn default() -> ProjectionVector

Returns the “default value” for a type.

impl Eq for ProjectionVector

impl PartialEq for ProjectionVector

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProjectionVector