Hi.

I am trying to find out the best way to have a generic Find method on my service layer classes that would accept multiple criteria expressions and return a list of entities.

The criteria API does everything I need but you have to create the criteria object from the session and could then call the .List mehtod directly from the UI...so why have the service layer at all!!?

I notice that the DetachedCriteria in Hib 3x would seem like a better option but that is probably a fair way off for NH I guess.

How is everyone else handling this problem? Do you create your own criteria API that gets translated into HQL or into NH criteria? Seems like a lot of work for not much gain! I am tempted to just use the current Criteria API and accept that the service layer is just a very thin wrapper to the .List method call!!

Thanks,

Jason

Here is a related topic: Keeping HQL out of the UI layer.

Thanks Pierre.

That thread is interesting although quite discouraging! Sounds like it is fairly tricky to create your own criteria class and have that converted into HQL and I am not overly keen to go down that path at this stage.

Cheers,

Jason