Struct Relation 

pub struct Relation<T> { /* private fields */ }

Implementations

impl<T> Relation<T>

pub fn new() -> Self

pub fn scene(&self) -> SceneId

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn links(&self) -> &[Link<T>]

pub fn ids(&self) -> &[LinkId]

pub fn link( &mut self, entities: &Entities, from: Entity, to: Entity, data: T, ) -> Result<LinkId, StoreError>

Occupied when the endpoint’s slot still lists links of an older generation.

pub fn unlink(&mut self, id: LinkId) -> Result<Link<T>, StoreError>

pub fn get(&self, id: LinkId) -> Option<&Link<T>>

pub fn get_mut(&mut self, id: LinkId) -> Option<&mut T>

pub fn outgoing(&self, from: Entity) -> Endpoints<'_>

pub fn incoming(&self, to: Entity) -> Endpoints<'_>

Trait Implementations

impl<T> Default for Relation<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Clone + Send + 'static> StoreField for Relation<T>

type Snapshot = RelationSnapshot<T>

fn bind(&mut self, scene: SceneId, _owner: Owner)

fn snapshot(&self) -> RelationSnapshot<T>

fn restore(&mut self, from: &RelationSnapshot<T>, scene: SceneId, _owner: Owner)

fn release(&mut self, entity: Entity, _owner: Owner)

fn boundary(&mut self, _owner: Owner)