Trait entity::Database[−][src]

pub trait Database: AsAny + Send + Sync {
    fn get(&self, id: Id) -> DatabaseResult<Option<Box<dyn Ent>>>;
    fn remove(&self, id: Id) -> DatabaseResult<bool>;
    fn insert(&self, ent: Box<dyn Ent>) -> DatabaseResult<Id>;
    fn get_all(&self, ids: Vec<Id>) -> DatabaseResult<Vec<Box<dyn Ent>>>;
    fn find_all(&self, query: Query) -> DatabaseResult<Vec<Box<dyn Ent>>>;
}

Represents a synchronous database, which performs blocking CRUD operations using ents. Given that many database implementations handle interior mutability themselves, the API of this trait does not provide any mut guarantees itself.

Required methods

`fn get(&self, id: Id) -> DatabaseResult<Option<Box<dyn Ent>>>`[src]

Retrieves a copy of a single, generic ent with the corresponding id

This should not connect the ent back to the database upon return as that decision should be made outside of the database itself.

`fn remove(&self, id: Id) -> DatabaseResult<bool>`[src]

Removes the ent with the corresponding id, triggering edge processing for all disconnected ents. Returns a boolean indicating if an ent was removed.

`fn insert(&self, ent: Box<dyn Ent>) -> DatabaseResult<Id>`[src]

Inserts a new ent using its id as the primary index, overwriting any ent with a matching id. If the ent’s id is set to the ephemeral id (of 0), a unique id will be assigned to the ent prior to being inserted.

The ent’s id is returned after being inserted.