Struct Relationship 

pub struct Relationship {
    pub id: RelationshipId,
    pub source_id: EntityId,
    pub relation: String,
    pub target_id: EntityId,
    pub scope: Scope,
    pub valid_from: DateTime<Utc>,
    pub invalid_at: Option<DateTime<Utc>>,
    pub created_at: DateTime<Utc>,
}

A directed, typed, time-bounded edge between two entities.

Fields

id: RelationshipId

source_id: EntityId

Source entity.

relation: String

Relation label (e.g. "works_for", "located_in").

target_id: EntityId

Target entity.

scope: Scope

valid_from: DateTime<Utc>

invalid_at: Option<DateTime<Utc>>

When this relationship stops being valid. None means “still valid”.

created_at: DateTime<Utc>

Implementations

impl Relationship

pub fn new( source_id: EntityId, relation: impl Into<String>, target_id: EntityId, scope: Scope, ) -> Self

pub fn is_valid(&self) -> bool

Returns true if this relationship is currently valid.

pub fn is_valid_at(&self, at: DateTime<Utc>) -> bool

Returns true if this relationship was valid at the given point in time.

Trait Implementations

impl Clone for Relationship

fn clone(&self) -> Relationship

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relationship

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Relationship

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Relationship

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

where __S: Serializer,

Serialize this value into the given Serde serializer.