launchpad-dev team mailing list archive

[Jeroen Vermeulen <jtv@xxxxxxxxxxxxx>]

On 2010-08-03 00:40, Jamu Kakar wrote:

> I'm not convinced that "override select to take ids list into
> account somehow" is a great idea.
True.  Frankly I haven't had a need yet to build custom query methods in 
concrete collections on our base; maybe that's where the customization 
should be.

> I think it'll lead to mixture of
> models: you'll have a list of expressions, sometimes, with special
> cases, sometimes, and then some glue to put it all back together.  I
Perhaps we shouldn't expose `select` and `refine` to anything outside 
the concrete collection, so that the caller doesn't get the flexibility 
but the implementation remains encapsulated and open to change.

Jeroen