Struct BelongsTo 

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

Represents a “belongs-to” navigation - ?the dependent side of a one-to-many or one-to-one relationship where the foreign key lives on this entity.

Corresponds to EFCore’s reference navigation property.

Implementations

impl<T> BelongsTo<T>

pub fn new() -> Self

pub fn with(entity: T) -> Self

pub fn get(&self) -> Option<&T>

pub fn get_mut(&mut self) -> Option<&mut T>

pub fn take(&mut self) -> Option<T>

Extracts the related entity, leaving the container empty and unloaded. Used by batch nested-include loading to collect related entities across multiple parents into a single slice for batch SQL.

pub fn is_loaded(&self) -> bool

Returns true if the navigation has been loaded (either eagerly via Include or lazily via [load]).

pub fn set_lazy_context(&mut self, ctx: Arc<dyn LazyContext>)

Attaches a lazy-loading context to this container.

Called by the #[derive(EntityType)] macro’s ILazyInit implementation when lazy loading is enabled on the DbContext.

pub async fn load(&mut self) -> EFResult<()>

where T: IFromRow + IEntityType + ILazyInit,

Triggers lazy loading of this reference navigation.

If the navigation is already loaded, this is a no-op. If no LazyContext is attached (lazy loading disabled), returns Ok(()) without loading.

After this call, [get] returns the loaded entity (or None if no matching row was found).

Trait Implementations

impl<T> Clone for BelongsTo<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for BelongsTo<T>

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

Formats the value using the given formatter.

impl<T> Default for BelongsTo<T>

fn default() -> Self

Returns the “default value” for a type.