I like that solution; it looks like a handy little utility class.
There's now a TransformUsing() method on IQueryOver (r4980), so you can
write:
Session.QueryOver<Tenant>()
.Select(x => x.Id, x => x.FirstName, x => x.LastName)
.TransformUsing(new PartialObjectTransformer<Tenant>(x => x.Id, x =>
x.FirstName, x => x.LastName))
.List<Tenant>()
I've also fixed the property aliasing to allow usage of the AliasToBean<T>
transformer, so you could also write:
Tenant tenantDto = null;
Session.QueryOver<Tenant>()
.Select(list => list
.Select(t => t.Id).WithAlias(() => tenantDto.Id)
.Select(t => t.FirstName).WithAlias(() => tenantDto.FirstName)
.Select(t => t.LastName).WithAlias(() => tenantDto.LastName))
.TransformUsing(Transforms.AliasToBean<Tenant>())
.List<Tenant>()
(I updated the blog with an example here:
http://nhforge.org/blogs/nhibernate/archive/2009/12/17/queryover-in-nh-3-0.aspx#Projections)
Finally, another option is to use the LINQ provider to generate the partial
classes/DTOs. Something like this should work:
from t in s.Query<Tenant>()
select new Tenant
{
Id = t.Id,
FirstName = t.FirstName,
LastName = t.LastName,
}
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