Enum KeyLabelSetPolicy 

pub enum KeyLabelSetPolicy {
    NoOverlap,
    Containment,
}

Reserved policy for relationships between the key label sets of a closed graph type’s element types.

Currently inert. This value is persisted on GraphType but is not yet consulted by any binding or validation path: closed-graph element binding uses exact key-label-set equality, and the catalog DDL only produces singleton key label sets (one label per type — see selene-gql’s create_node_type lowering), so no two key label sets can stand in an overlap/containment relationship. The variants reserve the two ISO postures that become meaningful once future multi-label key label set support lands.

Variants

NoOverlap

Reserved: key label sets must be pairwise disjoint.

Containment

Reserved: key label sets may contain one another, enabling ISO/IEC 39075:2024 §4.13.2.7 key label set implication consistency — a type whose key label set is a subset of another type’s label set “implies” that super-type. The current default; activated when multi-label key label sets ship.

Trait Implementations

impl Clone for KeyLabelSetPolicy

fn clone(&self) -> KeyLabelSetPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for KeyLabelSetPolicy

impl Debug for KeyLabelSetPolicy

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

Formats the value using the given formatter.

impl Default for KeyLabelSetPolicy

fn default() -> KeyLabelSetPolicy

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for KeyLabelSetPolicy

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for KeyLabelSetPolicy

impl Hash for KeyLabelSetPolicy

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for KeyLabelSetPolicy

fn eq(&self, other: &KeyLabelSetPolicy) -> 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 Serialize for KeyLabelSetPolicy

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for KeyLabelSetPolicy