Robert and I have had some extended discussions on ordering in
indices. I think that all we really need to agree on is _some_
canonical ordering. If we have mixed types in an index, how should
they be ordered relative to each other? In BDB we have a C function
which implements the ordering based on the type tag and then based on
the type within it. Are you relying on a pure binary sort in
postmodern?
Robert or I will get to submitting that patch shortly. I have
recently sent in a patch to lisp-compare<= so we'll see if we had to
make parallel changes.
Thanks,
Ian
On Jul 24, 2007, at 3:50 AM, Henrik Hjelte wrote:
I sent this message yesterday but I guess it got stuck in the mailing
list filter. Perhaps the attachment was too big. Since my
common-lisp.net user hhjelte does not have write access to elephant I
have placed the patches from here instead:
darcs get http://common-lisp.net/project/grand-prix/darcs/elephant
---------- Forwarded message ----------
From: Henrik Hjelte <[EMAIL PROTECTED]>
Date: Jul 23, 2007 11:28 PM
Subject: some patches
To: elephant-devel@common-lisp.net
Here are some darcs patches that might be of interest. I had some
problems with map-index on db-postmodern that made me almost rip my
hair of, but finally I made it to work again. The problem is that
map-index for a string value rely on the ordering in the btree
(continue-p makes use of less than for strings). The postmodern
backend relies on how the database backend orders things, which is not
always the same thing. Is it a necessary feature that b-trees of
string and objects are required to be ordered by lisp-compare<=?
In the process of solving the bug I have upgraded the test framework
to use FiveAM instead of RT, It has in my opinion a very nice syntax
and some useful features to track dependencies between tests. I hope
you agree that it improves on things.
/Henrik Hjelte
_______________________________________________
elephant-devel site list
elephant-devel@common-lisp.net
http://common-lisp.net/mailman/listinfo/elephant-devel
_______________________________________________
elephant-devel site list
elephant-devel@common-lisp.net
http://common-lisp.net/mailman/listinfo/elephant-devel
