Struct ddd_rs::infrastructure::persistence::InMemoryRepository

pub struct InMemoryRepository<T: AggregateRoot> { /* private fields */ }

An in-memory implementation of Repository, using a HashMap.

Examples

use ddd_rs::application::{ReadRepository, Repository};
use ddd_rs::domain::{AggregateRoot, Entity, UnitDomainEvent};
use ddd_rs::infrastructure::InMemoryRepository;

#[derive(ddd_rs::AggregateRoot, ddd_rs::Entity, Clone)]
struct MyEntity {
    id: i32,
    my_field: String,
    domain_events: Vec<UnitDomainEvent>,
    created_at: chrono::DateTime<chrono::Utc>,
    updated_at: chrono::DateTime<chrono::Utc>,
}

impl MyEntity {
    pub fn new(id: i32, my_field: impl ToString) -> Self {
        Self {
            id,
            my_field: my_field.to_string(),
            domain_events: vec![],
            created_at: chrono::Utc::now(),
            updated_at: chrono::Utc::now(),
        }
    }
}

let my_entity_repository: InMemoryRepository<MyEntity> = InMemoryRepository::new();

my_entity_repository.add(MyEntity::new(1, "foo")).await.unwrap();
my_entity_repository.add(MyEntity::new(2, "bar")).await.unwrap();
my_entity_repository.add(MyEntity::new(3, "baz")).await.unwrap();

let my_entity_2 = my_entity_repository.get_by_id(2).await.unwrap();

assert!(my_entity_2.is_some());
assert_eq!(my_entity_2.map(|e| e.my_field), Some(String::from("bar")));

Implementations

impl<T: AggregateRoot> InMemoryRepository<T>

pub fn new() -> Self

Creates a new InMemoryRepository.

Trait Implementations

impl<T: AggregateRoot> Default for InMemoryRepository<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: AggregateRoot + Clone> ReadRepository<T> for InMemoryRepository<T>where
    <T as Entity>::Id: Hash + Eq,

fn get_by_id<'life0, 'async_trait>(
    &'life0 self,
    id: <T as Entity>::Id
) -> Pin<Box<dyn Future<Output = Result<Option<T>>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Gets an entity with the given ID.

fn list<'life0, 'async_trait>(
    &'life0 self,
    skip: usize,
    take: usize
) -> Pin<Box<dyn Future<Output = Result<Vec<T>>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Lists all entities within a given page.

fn count<'life0, 'async_trait>(
    &'life0 self
) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Returns the total number of entities in the repository.

fn any<'life0, 'async_trait>(
    &'life0 self
) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Returns a boolean whether the repository is not empty.

impl<T: AggregateRoot + Clone> Repository<T> for InMemoryRepository<T>where
    <T as Entity>::Id: Hash + Eq,

fn add<'life0, 'async_trait>(
    &'life0 self,
    entity: T
) -> Pin<Box<dyn Future<Output = Result<T>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Adds an entity to the repository.

fn update<'life0, 'async_trait>(
    &'life0 self,
    entity: T
) -> Pin<Box<dyn Future<Output = Result<T>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Updates an entity on the repository.

fn delete<'life0, 'async_trait>(
    &'life0 self,
    entity: T
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>where
    Self: 'async_trait,
    'life0: 'async_trait,

Deletes the entity from the repository.

fn add_range<'life0, 'async_trait>(
    &'life0 self,
    entities: Vec<T>
) -> Pin<Box<dyn Future<Output = Result<Vec<T>>> + Send + 'async_trait>>where
    Self: Sync + 'async_trait,
    'life0: 'async_trait,

Adds the given entities to the repository.

fn update_range<'life0, 'async_trait>(
    &'life0 self,
    entities: Vec<T>
) -> Pin<Box<dyn Future<Output = Result<Vec<T>>> + Send + 'async_trait>>where
    Self: Sync + 'async_trait,
    'life0: 'async_trait,

Updates the given entities on the repository.

fn delete_range<'life0, 'async_trait>(
    &'life0 self,
    entities: Vec<T>
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>where
    Self: Sync + 'async_trait,
    'life0: 'async_trait,

Deletes the given entities from the repository.