[Openinteract-help] Callbacks on links_to?

[Vsevolod (S. I. <si...@cs...>]

Chris,

Finally, an non-trivial question. :) I am implementing a hierarchy of 
objects, each of which owns an SPOPS object. (I tried to not separate 
them, inheriting my classes both from SPOPS and from my superclass, but 
the new() methods collided, and multiple inheritance is not a good idea 
anyway).

So far this worked out well until I started using 'links_to'. Assume 
that MyPublisher and MyBook are my classes, SPOPS_Publisher and 
SPOPS_Book are SPOPS classes. Instances of MyPublisher refer to 
instances of SPOPS_Publisher, instances of MyBooks refer to instances of 
SPOPS_Books.

The expected object behavior is this:

$aMyPublisher->books produces an array of MyBooks.

In actuality,

$aMyPublisher->books produces an array of SPOPS_Books.

Is it possible to generate the desired result without straining the 
framework too much? Looks like I can achieve this by mucking around in 
SPOPS::ClassFactory::DBI and providing some kind of callbacks within the 
get/add/remove functions, but I'd like to get an official word first.

As for my previous question,

> It should print out:
>  Can it before? no
>  Can it after? yes

Precisely - I checked it.

> I agree that they should both say 'yes' and I'll see about making that 
> happen.

Thanks!

Simon
-- 

Simon (Vsevolod ILyushchenko)   si...@cs...
				http://www.simonf.com

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