How is Entity Framework 4 POCO support compared to NHibernate?

Question

Just wondering if anyone has experience using Entity Framework 4 POCO support and how it stands up compared to NHibernate. If they are the same, I'm very interested in making Entity Framework 4 my ORM choice, if only because it:

• Support for the first and first objects of the first object
• Have a trusted LINQ provider
• Be easier for customers (starting with Microsoft)
• Come to the .NET platform instead of requiring 8 dlls to get up and running

In other words, are there any significant flaws for EF4?

Does it support all the basic NHibernate support functions (lazy loading, loading eagerly, level 1 caching, etc.) or is it still uneven at the edges? Is the syntax for setting mappings as easy as NHibernate and / or Fluent NHibernate?

Edit: Please do not raise your voice without trust. This was many years ago and addressed some of the serious flaws of EF1, which seem to no longer apply to EF4.

Answer 1

It seems that Ayende has a rather detailed blog post comparing the two, although he admits that this is not a thorough breakdown of the dots (which is kind of what I was hoping for here).

In general, I think that the points he raises in favor of NHibernate are valid, although a little on the good-to-have side. If, in fact, EF4 is actually missing, it seems that EF4 is a great alternative to NHibernate, if only for the reasons listed in the original question.