Struct HelperRelationSpec 

pub struct HelperRelationSpec {
    pub name: String,
    pub rel_id: RelId,
    pub schema: Schema,
    pub source_rels: [RelId; 2],
}

Description of a helper relation introduced by the pass.

Fields

name: String

Predicate name allocated for the helper relation.

rel_id: RelId

Relation identifier allocated for the helper relation.

schema: Schema

Output schema of the helper relation.

source_rels: [RelId; 2]

Pair of source relations extracted into the helper body.

Trait Implementations

impl Clone for HelperRelationSpec

fn clone(&self) -> HelperRelationSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HelperRelationSpec

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

Formats the value using the given formatter.

impl PartialEq for HelperRelationSpec

fn eq(&self, other: &HelperRelationSpec) -> 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 HelperRelationSpec

impl StructuralPartialEq for HelperRelationSpec