SQLite3 Phobos branch

[Alex Khmara]

On Mon, 25 Apr 2011 15:26:44 +0300, Piotr Szturmaj <bncrbme at jadamspam.pl>  
wrote:

> In my Postgres implementation SELECT result is an Input Range, since  
> Forward Range implies position saving and that's possible only with  
> cursors.
>
> I think we could loosely follow .NET approach where each client has  
> separate class with its own capabilities. On top of that there's a  
> wrapper which abstracts all clients to one minimal api set. Actually  
> strictly speaking it's under that rather than on top, I mean polymorphic  
> DBConnection and its descendands. I think such an approach may be good  
> to consider.
>
> Class hierarchy could then look like this:
>
> DBConnection
> |
>   \
>    SqliteConnection
>    MySqlConnection
>    PostgresConnection

Sorry. Of course, I meant Input Range. My error.
As for hierarchy - I don't know, may be DBConnection will become just
interface - it seems that there is little common code between different  
database
clients hat can be moved into common ancestor.