If you use a 'repository' to abstract away your persistence technology, it really is a Data Access Object.
The definition of a repository is: 'Mediates between the domain and data mapping layers using a collection-like interface for accessing domain objects.' (fowler) note the 'collection-like'. The definition of a DAO is: a data access object (DAO) is an object that provides an abstract interface to some type of database or persistence mechanism, providing some specific operations without exposing details of the database. (wikipedia) So the 'repository' in the above example really is a DAO... It's just a naming issue, but do to this 'repository' hype, people have lost the real meaning of what a repository does. (ayende has some posts about it too). On 18 jun, 06:29, Paul Batum <[email protected]> wrote: > Today I read Fabio's post on how he sees little sense in combining non- > generic repositories with LINQ: > > http://fabiomaulo.blogspot.com/2009/06/linq-and-repository.html > > I was hoping to have a discussion about this. Basically, I don't > really understand where Fabio is coming from. If I have this > interface: > > public interface ICustomerRepository > { > Customer GetCustomerById(string id); > IEnumerable<Customer> FindByName(string name); > void AddCustomer(Customer customer); > > } > > Then I have some options in regards to the implementation for > FindByName. I could use the criteria API, I could use HQL, and I could > use LINQ. There are probably some other options that I am forgetting, > but I think its fair to say that these are the three major options. > > I'm a big fan of LINQ. I think its great that developers can learn one > common query language and apply it to different datasources. I see > LINQ2NH eventually replacing HQL and the criteria API in 90% of cases. > I don't understand why using LINQ to implement the FindByName method > is inappropriate. Could Fabio or someone else that understands his > point of view elaborate on this further? > > Thanks! > > Paul Batum --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
