Can hibernate business objects be used as entities in a clean architecture?

Asked Feb 11 '17 at 11:47

Active Feb 11 '17 at 11:47

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In our project we use classes generated by eclipse hibernate plugin for persistence. The generated classes have following structure.

MyClass extends BaseMyClass //POJO's, that are refenced in the hbm
files

MyClassDAO extends BaseMyClassDAO //DAO objects that use hibernate
session objects to provide CRUD API's for working with DB

My question is, would it violate Uncle Bobs clean architecture if we use the POJO classes used in the mapping files as the Entities in the innermost layer.

The hibernate specific DAO classes would belong in this case to the outermost layer and UseCases layer would communicate with this layer via providing an interface to be implemented.

Thanks in advance.

asked Feb 11 '17 at 11:47

Aleksandr Burnazyan

Are those POJOs generated from the DB schema? – MaxSC Mar 02 '17 at 20:04
Yes they are generated from DB schema – Aleksandr Burnazyan Mar 04 '17 at 07:14
1

So this is not a business model, this is a DB model :) If you want to stick to hexagonal or onion architecture type, this DB model should not be the core domain model of your application. – MaxSC Mar 04 '17 at 12:43
This makes sense, thanks – Aleksandr Burnazyan Mar 04 '17 at 19:34
1

Also using POJOs would probably lead to an [anemic model](https://martinfowler.com/bliki/AnemicDomainModel.html) – MaxSC Mar 05 '17 at 10:25

Can hibernate business objects be used as entities in a clean architecture?

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