Enum Cardinality 

pub enum Cardinality {
    One,
    ZeroOrOne,
    OneOrMore,
    ZeroOrMore,
}

Allowed cardinality ranges for RelationshipDef::cardinality_per_source. Stringly-typed parsing rejected — typos surface at YAML load time via serde, the warning builder gets exhaustive matches, and the wire payload renders via Display.

Variants

One

ZeroOrOne

OneOrMore

ZeroOrMore

Implementations

impl Cardinality

pub fn admits(&self, count: usize) -> bool

Returns true iff count falls inside the allowed range. Used by memstead_relate to predict whether a post-mutation outgoing count would violate the schema’s intent.

Trait Implementations

impl Clone for Cardinality

fn clone(&self) -> Cardinality

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Cardinality

impl Debug for Cardinality

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Cardinality

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Cardinality

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

Formats the value using the given formatter.

impl Eq for Cardinality

impl JsonSchema for Cardinality

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for Cardinality

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Cardinality

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 Cardinality