Persistent Objects Part 3

The one thing I find missing in other persistent object implementations is the ability to persist data from any kind of source.

You could easily persist data from a Web Service, a dataset, other functionality found in your business logic. Just about anything, actually.

If you look at your persistent objects a bit like facade objects, this would make a lot of sense.

For instance :

1
2
3
4
5
6
7
8
9
 

[Persistent]
public class MyPersistentObject : PersistentObject
{
     [PersistentWebService("<uri for webservice>","get method","set method")]
     public string Name {
          get { return string.Empty; }
          set {}
     }
}

The DoLittle Persistency project found at GotDotNet is going in that direction. The implementation uses a PersistencySource and goes through a manager to get the Default source. The default behaviour can easily be changed by implementing your own source. This source could for instance get data from a file, if that is what you are trying to accomplish.

It's a world of opportunities.. :)