Referencing Aggregate Roots in DDD

[wdorninger]

I have a question of how i can reference Aggregate Roots from other objects when using a domain driven design. Here is my problem

I do not want to directly reference other Aggregate Roots from my Objects (Aggregates) as this would mean (1) I would eventually load a whole network of objects when loading one Aggregate Root (2) I would create dependencies between the Repositories

I thought of using Proxies instead - however this does not seem to be a good idea as well as when using a proxy ideally i would be able to resolve the "real" Aggregate Root transparently - but this will require the object to use the service layer (where all the repositories are used and the transactions are maintained) - so I'll create a sependency on the service layer in the Business Objects which I don't really want as well.

So to make this question short - how are you referencing Aggregate roots from your objects without creating a whole network of objects and still having a clean separation of the Service Layer and the Business Objects?

Thanks in advance for your comments/suggestions/ideas
Walter