Properties on Domain Events

[JorgeOnrubiaMojica]

Hi

I'm in love with this project. The debate is so rich.

I have a question or various questions.

How do you model your domain events? I mean. I have an aggregate in one BC named Address that holds references to other Aggregates by theirs ids, like a normal aggregate: CityId, StateId, etc.... But in another BC the same Address aggregate I would like to represent the Address like various Value Objects, I dont care about your ids. Address has CityName and StateName.

The problem is my Domain Event, AddressCreated only hold the ids of the aggregate fresh created, I mean, the AddressId, CityId and StateId, but in the other BC I need the names.

[AlbertMorenoDEV]

Hello,

If AddressCreated event doesn't have all the information you need then you'll probably need to provide more events like CityCreated, StateCreated... and so on, so the other BC has all the data to populate his projection.

[JorgeOnrubiaMojica]

Hi.

I don't want to replicate all the address structure on the second BC. I don't need to known that CityId with id 1 is NYC or so. I only need in the second BC a Value object that represent the Address of a Client.

Yesterday, thinking on the best solution, came up one idea. When I consume the event in the second BC, my ACL can do a HTTP call to the first BC to transform the ids of the event in my Address Value Object on my second BC.

[AlbertMorenoDEV]

This might work as long as you handle outages properly, I usually try to avoid direct calls between BC for it, but depending on the project can be a valid solution for sure.

Cheers