R1NStore

xvc_core

Struct R1NStore 

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pub struct R1NStore<T, U>
where
    T: Storable,
    U: Storable,
{
    pub parents: XvcStore<T>,
    pub children: XvcStore<U>,
    pub child_parents: XvcStore<ChildEntity<U, T>>,
}
Expand description

RNStore is 1-N RelationStore, where we store one-to-many relationships between two entities. It doesn’t have any semantics except binding two entities together.

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§parents: XvcStore<T>

Keeps the parent type

§children: XvcStore<U>

Keeps the child type

§child_parents: XvcStore<ChildEntity<U, T>>

Keeps the relationships between child entities and parent entities The key for the child_parents is the child entity, as there are many children for a parent.

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impl<T, U> R1NStore<T, U>
where T: Storable, U: Storable,

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pub fn insert( &mut self, parent_entity: XvcEntity, parent_component: T, child_entity: XvcEntity, child_component: U, ) -> Option<XvcEntity>

Insert a child component to a parent parent_component. It checks whether the parent is equal to the given, and updates if there is a change.

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pub fn children_of(&self, parent_entity: &XvcEntity) -> Result<HStore<U>, Error>

get the store of related entities.

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pub fn parent_of( &self, child_entity: &XvcEntity, ) -> Result<(&ChildEntity<U, T>, &T), Error>

Get left entity that’s related with thethe right child_entity.

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pub fn remove_child(&mut self, child_entity: XvcEntity) -> Result<(), Error>

Remove the child entity from child-parent store and children store

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impl<T, U> R1NStore<T, U>
where T: Storable, U: Storable,

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pub fn load_r1nstore(store_root: &Path) -> Result<R1NStore<T, U>, Error>

Loads the stores from store root and directory named after type names

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pub fn save_r1nstore( store: &R1NStore<T, U>, store_root: &Path, ) -> Result<(), Error>

Records the stores to store root and directories created from type names

Trait Implementations§

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impl<T, U> Clone for R1NStore<T, U>
where T: Clone + Storable, U: Clone + Storable,

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fn clone(&self) -> R1NStore<T, U>

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl<T, U> Debug for R1NStore<T, U>
where T: Debug + Storable, U: Debug + Storable,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T, U> Freeze for R1NStore<T, U>

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impl<T, U> RefUnwindSafe for R1NStore<T, U>
where T: RefUnwindSafe, U: RefUnwindSafe,

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impl<T, U> Send for R1NStore<T, U>
where T: Send, U: Send,

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impl<T, U> Sync for R1NStore<T, U>
where T: Sync, U: Sync,

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impl<T, U> Unpin for R1NStore<T, U>
where T: Unpin, U: Unpin,

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impl<T, U> UnwindSafe for R1NStore<T, U>
where T: RefUnwindSafe + UnwindSafe, U: RefUnwindSafe + UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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fn instrument(self, span: Span) -> Instrumented<Self>

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That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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const ALIGN: usize

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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