Domain Driven Design Aggregate Root Example
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It doesn t make sense to be able to do context people add as that s not how the domain works.
Domain driven design aggregate root example. For example all people belong to an organization with organization being the aggregate root. The above layout of classes doesn t conform to how the domain works. A ddd aggregate is a cluster of domain objects that can be treated as a single unit.
Aggregate is a pattern in domain driven design. Each aggregate has a single root entity and a boundary that marks what is inside and what is outside of the aggregate. But that doesn t actually matter because the these domain objects have wildly separate responsibilities which don t seem to overlap.
There are currently two examples. An example may be an order and its line items these will be separate objects but it s useful to treat the order together with its line items as a single aggregate. The root entity is the only entity that is globally accessible in the application.
The aggregate root is the root entity so deleting the aggregate root will cascade delete everything within the consistency boundary of the aggregate. For everyone who has read my book and or effective aggregate design but have been left wondering how to implement aggregates with domain driven design ddd on the net platform using c and entity framework this post is for you. An aggregate is a cluster of associated object that we treat as a single unit.
Aggregates and aggregate root or root entity rules to support the internal implementation. As expected this article has within hours of posting received some criticism for the approach used to o r mapping with entity framework. A scoring engine for loans.
Domain driven design ddd advocates modeling based on the reality of business as relevant to your use cases. I have an employee entity which has surfaced as an aggregate root. If we want to delete something within the aggregate we have to tell the aggregate root to mark it for deletion then pass it off to the repo to delete anything marked for deletion.
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