Hi all,

I just would like to know how to map a view. i have a class Group a which mapping file is:



V_GROUPE is the view i would like to use but i always have the message:

"Invalid mapping information specified for type ArchivecoFramework.Groupe, check your mapping file for property type mismatches."

Moreover, if i compile again, i have the results that i expect to.

Thank you for answer me quickly !!!

I found the solution : I had to put "bag" instead of "set" for my one-to-many relation block.

Could someone explain me the difference between set and bag ????

>Could someone explain me the difference between set and bag ????

set cannot accomodate duplicate entries in it where as bag can have duplicates.

set uses the NHibernate specific datatype Iesi.collections.Iset in the entity file where as bag used .NET native type IList.

set performance is found to be better when one-to-many relationships where as Large NHibernate bags mapped with inverse="false" are inefficient and should be avoided. NHibernate can't create, delete or update rows individually, because there is no key that may be used to identify an individual row.