Domain Services with multiple Aggregate Operations

[nilaxann65]

I have the following issue: I'm working on an inventory system where I have two aggregates, Note and Article. A Note has a list of lots associated with it, and Article is a single aggregate, without child entities.

Here is the problem:
When I create a new Note with many lots (which could be from different articles), I need to calculate the total price. However, the prices of the articles are in the Article aggregate, so I can't access that data directly. For this, I could create a domain service that fetches the data from both articles and calculates the total price. But where should I declare this domain service? The aggregates and services are in different modules. Maybe I'm going the wrong way. I would like to know your opinions :).
Thank you.

[Sairyss]

I would just create a query in an Article module that exposes the data that you need and call it from the service that needs that data.

But where should I declare this domain service?

If that service creates a Note, it probably should be in the Note domain (and call Article -> GetPrice query)

[nilaxann65]

Sounds good, but is it really needed to make an http request within the same project?
It seems unnecessary but I cant see another way...

[Sairyss]

is it really needed to make an http request within the same project?

I never said anything about HTTP requests, it's just a method call (or a query bus call if you use that in your project).