Struct Relation 

pub struct Relation {
    pub name: String,
    pub from: RelationEnd,
    pub to: RelationEnd,
    pub cardinality: RelationCardinality,
    pub on_delete: Option<RelationAction>,
    pub enforce: Option<bool>,
}

A declared link between two tables. enforce: true is checked at put/patch (Database::put_checked/patch_checked) and on_delete at delete (Database::delete_checked) — both opt-in per relation; a relation naming neither is still reported by crate::catalog::check_integrity and Database::relations, but nothing about a write or delete checks it.

Fields

name: String

from: RelationEnd

to: RelationEnd

cardinality: RelationCardinality

on_delete: Option<RelationAction>

enforce: Option<bool>

Trait Implementations

impl Clone for Relation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relation

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

Formats the value using the given formatter.

impl PartialEq for Relation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Relation