Where is functions that retrieves data to display about iddd_samples HOT 5 CLOSED

Look at agilepm.application for queries. Also look in infrastructure persistence for projections.

from iddd_samples.

My mistake, you are correct. There are no projections or query interfaces in that project as iddd_agilepm is not event sourced. However, if you look at the iddd_collaboration project you can see examples of both event sourcing and CQRS.

from iddd_samples.

You will need to decide what works best for you. From your statements it could well be that CQRS would help simplify your queries.

from iddd_samples.

Thank you for your question is a great honor for me.
But I read very carefully and don't see any code about query command.

See the screen snapshot, it is not any services for find, query, search ... for data

from iddd_samples.

Dear Vaughn Vernon,

Ofcourse, I read the code and feel so excited.

I'm very curious about how you building query services in iddd_agilepm. You may create another query model that is separated with command model as CQRS (like QueryService in iddd_collaboration) or just use DTO Assembler to render command model (domain object).

A separated query model and query service is make more sense. But reuse domain model for read / render user interface that is hard to do. If I do that, I may call many services to retrieve data from small aggragtes to assemble into more bigger query model. It's not a efficient multiple sql commands.

I feel that if using DDD with small aggregates, almost projects must be use CQRS to separate command and query model. Do you agree about that?

from iddd_samples.