What is aggregate and aggregate root?
Aggregate means collection of something. root is like top node of tree, from where we can access everything like node in web page document. Within an Aggregate there is an Aggregate Root. The Aggregate Root is the parent Entity to all other Entities and Value Objects within the Aggregate.
Can a value object be an aggregate root?
So, answering your question – there is no point in value object being aggregate root since aggregates are distinguished between themselves by unique ID and value object doesn’t care about identity at all.
Can aggregates use repository?
Define one repository per aggregate For each aggregate or aggregate root, you should create one repository class. This is because they have a one-to-one relationship with the aggregate root, which controls the aggregate’s invariants and transactional consistency.
What is root aggregate in netapp?
The root aggregate contains the root volume, which contains special directories and configuration files that help you administer the storage system. By default, the storage system is set up to use a hard disk drive (HDD) aggregate for the root aggregate.
Is it correct for a root aggregate to hold reference to another root aggregate?
DDD: is it correct for a root aggregate to hold a reference to another root aggregate? When following Domain-driven design (DDD), is it correct for a root aggregate to hold a reference to an internal entity that happens to be the root entity on a separate aggregate?
Can a entity be shared across many aggregates?
Since the premise of DDD is that the Aggregate is the entry point, you would be able to load A, modify entity E through it, all the while silently violating invariants from B (that you didn’t load). See the answer from Greg Young here : http://domain-driven-design.3010926.n2.nabble.com/Can-an-Entity-be-Shared-across-many-Aggregates-td7579277.html
Can a value object be part of multiple aggregates?
A Value Object can be part of multiple Aggregates, but not an Entity. The reason is, nothing would then prevent you from sharing the same entity instance between Aggregates. Let’s say that entity instance E belongs to both aggregate instances A and B.