Composition & Aggregation #CSharp

gistfile1.cs

class CompositeCustomService
{
    // Композиция
    private readonly CustomRepository _repository
          = new CustomRepository();
    public void DoSomething()
    { 
        // Используем _repository
    }
}

class AggregatedCustomService
{ 
    // Агрегация
    private readonly AbstractRepository _repository; 
    public AggregatedCustomService(AbstractRepository repository) 
    { 
        _repository = repository; 
    } 
    public void DoSomething() 
    { 
        // Используем _repository
    }
}

internal interface IRepositoryFactory
{ 
    AbstractRepository Create();
}
 
class CustomService
{ 
    // Композиция
    private readonly IRepositoryFactory _repositoryFactory; 
    public CustomService(IRepositoryFactory repositoryFactory) 
    { 
        _repositoryFactory = repositoryFactory; 
    } 
    public void DoSomething() 
    { 
        var repository = _repositoryFactory.Create(); 
        // Используем созданный AbstractRepository
    }
}