Enum TypeConstraint 

pub enum TypeConstraint {
    PrimaryKey(Vec<String>),
    Unique(Vec<String>),
    NotNull(String),
    Check {
        name: Option<String>,
        expression: String,
    },
}

A constraint on a node or edge type.

Variants

PrimaryKey(Vec<String>)

Primary key (implies UNIQUE + NOT NULL).

Unique(Vec<String>)

Uniqueness constraint on one or more properties.

NotNull(String)

NOT NULL constraint on a single property.

Check

CHECK constraint with a named expression string.

Fields

name: Option<String>

Optional constraint name.

expression: String

Expression (stored as string for now).

Trait Implementations

impl Clone for TypeConstraint

fn clone(&self) -> TypeConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeConstraint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TypeConstraint

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TypeConstraint

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

where __S: Serializer,

Serialize this value into the given Serde serializer.