¿A qué nivel pertenece: aplicación o dominio?

¿Dónde debo poner esto?

, ( ) () , : : ? , - - . , , , - :

? , .

2

(Dependency rule): . , . (Infrastructure) (Application). (Domain). , . , /API, . , , . . ; , -- (Application-as-an-interface).

, « ». PurchaseEbookController



, , PurchaseEbook



, PurchaseEbookService



. , . Purchase



PurchaseRepository



, . PurchaseRepositoryUsingSql



, PurchaseRepository



.

PurchaseRepository



? (, ). Purchase



. . , , , . , .

? , . API, .

-- ApplicationInterface?

, : API, , interface



. ,

namespace Application;

interface ApplicationInterface
{
    public function purchaseEbook(PurchaseEbook $command): void;

    /**
     * @return EbookForList[]
     */    
    public function listAvailableEbooks(): array;
}
      
      

        
        
        
      

    
        
        
        
      
      

        
        
        
      

    
    

, listAvailableEbooks()



, , ApplicationInterface



.

, -- - , . , , . , . ApplicationInterface



, , , . , ​​ , . .

---

PHP-? — .

Middle+ , PHP.



-, : “ ? ?”



-

---