Class InMemoryRepository<TEntity>`Abstract`

Base in-memory repository implementation.

Provides common CRUD operations for entities stored in memory. Useful for development, testing, and prototyping.

Example

class InMemoryProductRepository extends InMemoryRepository<Product> {
  async findByName(name: string): Promise<Product | null> {
    return this.findOne(p => p.name === name);
  *
  async findByCategory(category: string): Promise<Product[]> {
    return this.findMany(p => p.category === category);
  }
}

Type Parameters

TEntity extends Entity<string>
The entity type this repository manages

Implements

Repository<TEntity, string>

Index

Constructors

constructor

new InMemoryRepository<TEntity extends Entity<string>>(): InMemoryRepository<
TEntity,
>
Type Parameters
- TEntity extends Entity<string>
Returns InMemoryRepository<TEntity>

Methods

findById

findById(id: string): Promise<null | TEntity>
Finds an entity by its ID.
Parameters
- id: string
  The entity ID (string)
Returns Promise<null | TEntity>
The entity or null if not found
Implementation of Repository.findById
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:36

findAll

findAll(): Promise<TEntity[]>
Finds all entities.

Returns Promise<TEntity[]>
Array of all entities
Implementation of Repository.findAll
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:45

save

save(entity: TEntity): Promise<void>
Saves an entity (creates or updates).
Parameters
- entity: TEntity
  The entity to save
Returns Promise<void>
Implementation of Repository.save
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:54

delete

delete(id: string): Promise<void>
Deletes an entity by its ID.
Parameters
- id: string
  The entity ID (string) to delete
Returns Promise<void>
Implementation of Repository.delete
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:63

exists

exists(id: string): Promise<boolean>
Checks if an entity exists.
Parameters
- id: string
  The entity ID (string) to check
Returns Promise<boolean>
true if entity exists, false otherwise
Implementation of Repository.exists
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:73

findOne

findOne(predicate: (entity: TEntity) => boolean): Promise<null | TEntity>
Finds the first entity matching a predicate.
Parameters
- predicate: (entity: TEntity) => boolean
  Function to test each entity
Returns Promise<null | TEntity>
The first matching entity or null
Example
```
const product = await repository.findOne(p => p.price > 100);
```
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:88

findMany

findMany(predicate: (entity: TEntity) => boolean): Promise<TEntity[]>
Finds all entities matching a predicate.
Parameters
- predicate: (entity: TEntity) => boolean
  Function to test each entity
Returns Promise<TEntity[]>
Array of matching entities
Example
```
const expensiveProducts = await repository.findMany(p => p.price > 1000);
```
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:108

count

count(predicate?: (entity: TEntity) => boolean): Promise<number>
Counts entities matching an optional predicate.
Parameters
- Optionalpredicate: (entity: TEntity) => boolean
  Optional function to test each entity
Returns Promise<number>
Count of matching entities
Example
```
const totalCount = await repository.count();
const activeCount = await repository.count(p => p.status === 'active');
```
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:124

clear

clear(): void
Clears all entities from the repository. Useful for testing cleanup.

Returns void
Example
```
afterEach(() => {
  repository.clear();
});
```
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:142

saveMany

saveMany(entities: TEntity[]): Promise<void>
Saves multiple entities in batch.
Parameters
- entities: TEntity[]
  Array of entities to save
Returns Promise<void>
Example
```
await repository.saveMany([product1, product2, product3]);
```
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:156

deleteMany

deleteMany(ids: string[]): Promise<void>
Deletes multiple entities by their IDs.
Parameters
- ids: string[]
  Array of entity IDs (strings) to delete
Returns Promise<void>
Example
```
await repository.deleteMany(['id1', 'id2', 'id3']);
```
- Defined in runtime/src/infrastructure/InMemoryRepository.ts:172

Properties

`Protected`entities

entities: Map<string, TEntity> = ...

Class InMemoryRepository<TEntity>Abstract

Example

Type Parameters

Implements

Index

Constructors

Methods

Properties

Constructors

constructor

Type Parameters

Returns InMemoryRepository<TEntity>

Methods

findById

Parameters

Returns Promise<null | TEntity>

findAll

Returns Promise<TEntity[]>

save

Parameters

Returns Promise<void>

delete

Parameters

Returns Promise<void>

exists

Parameters

Returns Promise<boolean>

findOne

Parameters

Returns Promise<null | TEntity>

Example

findMany

Parameters

Returns Promise<TEntity[]>

Example

count

Parameters

Returns Promise<number>

Example

clear

Returns void

Example

saveMany

Parameters

Returns Promise<void>

Example

deleteMany

Parameters

Returns Promise<void>

Example

Properties

Protectedentities

Settings

On This Page

Class InMemoryRepository<TEntity>`Abstract`

`Protected`entities