Struct KCliqueShape 

pub struct KCliqueShape { /* private fields */ }

Shape consumed by the full-variable WCOJ planner.

Implementations

impl KCliqueShape

pub fn complete(variable_count: u8, first_rel_id: RelId) -> Option<Self>

Creates a complete K_k binary-edge shape with deterministic relation IDs.

pub fn from_edges(variable_count: u8, edges: Vec<KCliqueEdge>) -> Option<Self>

Creates a K-clique-family shape from explicit relation edges.

Used by the production promoter after it has validated the lowered RIR as a complete clique and recovered the actual relation IDs from scan leaves. The edge list must already be in deterministic shape order.

pub fn cycle4(first_rel_id: RelId) -> Option<Self>

Creates the four-variable cycle shape used by the predecessor WCOJ path.

pub fn variable_count(&self) -> u8

Number of variables in the shape.

pub fn edges(&self) -> &[KCliqueEdge]

Relation edges in canonical shape order.

Trait Implementations

impl Clone for KCliqueShape

fn clone(&self) -> KCliqueShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KCliqueShape

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

Formats the value using the given formatter.

impl PartialEq for KCliqueShape

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for KCliqueShape

impl StructuralPartialEq for KCliqueShape