How to implement correctly IUserType?

Question

I need to create a custom type for NHibernate by writing a new mapper class that implements IUserType. While it is relatively straightforward to override most o

Answer 1

You may want to check out this article. It is a good example of how to implement the IUserType interface.

Answer 2

Have a look at how Ritesh Rao has done this in his NCommon framework:

The MoneyUserType implements a base class called CompositeUserTypeBase

There's more detail in the comments but to summarize:

• DeepCopy - should return a deep copy of the persistent state, stopping at entities and at collections
• Disassemble - transforms the object into its 'cacheable' representation (i.e. associations must be cached as identifier values)
• Assemble - reconstructs an object from the cacheable representation

It's explained in a lot more detail here