Struct FjPlan 

pub struct FjPlan {
    pub num_vars: usize,
    pub nodes: Vec<FjNode>,
    pub output_vars: Vec<usize>,
}

A host-side Free Join plan over inputs (design §3). Callers hand-build the plan today; planner construction from binary joins (binary2fj) is a downstream integration surface.

Fields

num_vars: usize

Number of distinct join variables (ids 0..num_vars).

nodes: Vec<FjNode>

Plan nodes, executed in order.

output_vars: Vec<usize>

Head projection: variable ids in output column order. When this is a strict subset of the bound variables the result is deduplicated (set semantics).

Trait Implementations

impl Clone for FjPlan

fn clone(&self) -> FjPlan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FjPlan

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

Formats the value using the given formatter.