Resolving complex object graph with Unity

Question

I have the following situation, arrows represent dependencies:

Hierarchy

How can I resolve an Entity Manager object? When I resolve one, it creates 2 instances of the customer and address repository, but these instances need the same Dbcontext!

But I do not want the Dbcontext to be static in the entire application, when resolving another entity manager, it should resolve a separate dbcontext...

The best approach would be to remove the repository layer and query the context directly. This sounds controversial, but it isn't. — Gert Arnold, Feb 03 '14 at 11:24
I'm not convinced. I'm open to the idea, but could you argument that? — user2807357, Feb 03 '14 at 14:18
Start here for instance: http://stackoverflow.com/q/5625746/861716 — Gert Arnold, Feb 03 '14 at 15:42
PerResolveLifetimeManager was created for this situation. Why complicate things with child containers? — jlvaquero, Aug 17 '15 at 06:16

score 0 · Accepted Answer · answered Aug 12 '15 at 03:22

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You can register you Dbcontext in Unity with HierarchicalLifetimeManager, create new child container and resolve Entity Manager from new child container. So, you will have new instance of Dbcontext for every Entity Manager.

answered Aug 12 '15 at 03:22

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score 0 · Answer 2 · answered Aug 12 '15 at 08:29

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Maybe PerResolveLifetimeManager for DBContext could help you.

All objects in graph has the same instance but a new instance is created in every graph resolve.

Full example here.

answered Aug 12 '15 at 08:29

jlvaquero

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Resolving complex object graph with Unity

2 Answers2