Struct DomainDef 

pub struct DomainDef {
    pub name: String,
    pub base_type: DataType,
    pub nullable: bool,
    pub default: Option<String>,
    pub checks: Vec<DomainCheck>,
    pub base_domain: Option<String>,
}

default / checks are stored as Display-form source so spg-storage stays free of spg-sql dependency — same pattern as FunctionDef / ViewDef.

Fields

name: String

base_type: DataType

nullable: bool

default: Option<String>

checks: Vec<DomainCheck>

v7.39 (round 260) — each CHECK carries its constraint NAME, so ALTER DOMAIN … DROP CONSTRAINT <name> can find it and the violation message can report the constraint that actually failed. PG’s auto-naming for an unnamed check is <domain>_check, then _check1, _check2, … (probed).

base_domain: Option<String>

v7.39 (round 258/259) — when this domain was declared over ANOTHER domain (CREATE DOMAIN child AS parent CHECK (…)), the parent’s name. base_type is the ultimate scalar type either way, so without this the parent’s constraints were invisible and a value violating them was silently accepted. PG checks the whole chain, base-first, and an ALTER DOMAIN on the parent takes effect for the child immediately (probed) — so the chain is walked at check time rather than copied at CREATE time. Catalog FILE_VERSION 74+.

Trait Implementations

impl Clone for DomainDef

fn clone(&self) -> DomainDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DomainDef

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

Formats the value using the given formatter.

impl Eq for DomainDef

impl PartialEq for DomainDef

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DomainDef