[SQLObject] relationship interface and lists..

[Bud P. B. <bu...@si...>]

I've been thinking about the API for dealing with relations.

person.roles is just perfect.

In addition, what about person.rolesWhere(<some condition>)

And instead of person.addRole(r), what about person.roles.append(r)
and similarly, r.removePerson(p) as r.persons.remove(p)

To be pythonic, everything should behave as much as a list as
possible.  So I started to play around with inheriting from list and
looking at the hooks (see attached file).  I was expecting that there
was a single interface to setting and getting list items (namely,
__getitem__ and __setitem__), but it seems that other ways of
modifying the list such as l.extend() or l.append() don't internally
fall back on __getitem__ and __setitem__.  

Also, someone could "recalculate" relationships and assign them:
p.roles = throttleBack(p.roles)

Has any of you looked into these issues and knows which hooks have to
be taken care of?

thanks

--bud

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