General Query Framework, an updated proposal

[Phillip Shelton]

Would having your `does this object match this predicate' return - for under
zero for true and + for above work? ... Oh, a predicate is not an object is
it.

Phill

> -----Original Message-----
>
> Unfortunately I forgot to include some of the "sort-by" functionality.
> I need to go back and see how that's going to fit in.  I completely
> missed the fact that "does this object match this predicate" is not
> the same code as "does this object come before this other objects of
> the same type".
> 
> I'd like to try to re-use code as much as possible, but I think I'm
> going to need yet another function for core types to return a
> comparrison.  I think this prototype would look something like:
> 
>         int (*QueryCompare) (gpointer a, gpointer b,
>                              gint compare_options, 
> QueryAccess get_fcn);
> 
> This would let you say something like:
>         sort-by trans->entered_date (DATE_ROUNDED)
> 
> Comments?
> 
> -derek
> 
> -- 
>        Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
>        Member, MIT Student Information Processing Board  (SIPB)
>        URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
>        warlord@MIT.EDU                        PGP key available
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