>
> You can do that without persistent class slots -- make a counter class and
> update its value.
> Something like this:
>
> (defpclass counter ()
> ((classname :index t :initarg :classname)
> (counter :initform 0)))
>
> Then you can increment it automatically:
>
> (defmethod initialize-instan
> Why not have a caching get-instance-count function instead?
>
> Leslie
>
>
I doubt that will work well for datasets on which people are adding/deleting
records. If we just cache the count, then we will need to do a recount every
time some one adds/deletes some records, which will halt the site f
Hi,
Is there a simple way to ensure that values of a persistent slot must be
unique? Namely, when a instance is persisted (either with the plain
make-instance or at the end of a transaction), an error of condition will be
thrown if the slot value is not unique. Thank you.
Warren
_
Hi,
As I understand from the online document, class slots with :allocation
:class are not persisted. Is there any plan to change that soon?
I first did not think that is such a big deal, but then I encountered a
performance issue to which I think persisted class slot may be the answer.
The issue
