Re: CLOS persistence

On Tue, 13 Nov 2007 08:15:42 -0800, Javier wrote:

I've got some classes, with millions of instances. So much that it is
easy to get running out of memory.
My simple question is:

Is there any way to manage all of this clases through a database? I'm
not saying just persist them, but also getting them out of memory so I
can work from the database when needed? I don't want to reimplement all
of the program, I'm looking for a solution like MOP or something like
that.

Any help?

I've been looking around for a persistence library lately, and as far as
I can tell, clsql is /probably/ good enough to do this. It has a fairly
basic (but apparently sane and straight-forward) OO-relational mapping
and the documentation seems to be quite good.

See http://clsql.b9.com/

I've also had a look at cl-perec, and it looks a lot fancier, but the
documentation is pretty much non-existent (or it may be just hard to find)

Anyway, I can't tell you anything about the memory efficiency of either -
maybe someone else can tell you more, or just try it out yourself.

Joost.
.

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