Hibernate version:
1.2.1

The Get(IDataReader, x) method impl of the types in NHibernate.Type internally uses Convert.Xxx.

I might be wrong here, but I've always used IDataReader's GetXxx when converting data source values to a .net type becaused I thought it performed better.

If my thoughts are right, I guess this can make a decent improvement of the overall performance. At least when reading quite a lot number of objects.

Anyone who can confirm this? Why has nhibernate chosen the "Convert.Xxx" path when reading data?

Regards
Roger

I can't say I really know either way, but the following post on the microsoft forums seems to indicate that the data to be retreived by the GetXXX method must already be in the correct format as no conversion is performed.

http://forums.microsoft.com/MSDN/ShowPo ... 8&SiteID=1


Cheers,

Symon.

Thanks for your reply.

In our application we use guids as pk so my original post was primarly based on that type. Nhib's impl regarding Guid's Get() method first calls ToString() which, I guess, won't be needed nor used internally if relying on IDataReader's GetXxx impl.

I will investigate this further.

/R