Re: Supported RFC's and "features"
Marc Chantreux wrote:
On Thu, Nov 15, 2007 at 12:30:09PM -0800, Quanah Gibson-Mount wrote:
>> - RFC 2891 (server side sorting)
> Why is this problematic? Server side sorting is a horrible waste of server
> CPU that's better served by the client doing sorting how it wants.
well ... i think this feature could be very usefull in certain cases.
Imagine I just want to know what's the max uidNumber used in my directory.
actually, i ask the server to give all the uidNumbers and my client sort
them. isn't it an horrible waste of bandwidth ?
In OpenLDAP you would set an equality index on uidNumber and do a query for,
e.g., (uidNumber<=2147483647) with sizelimit=1.
The server side sorting feature is an extremely indirect (and inefficient)
route to answering this particular question; you get the answer you're looking
for as a side-effect of a non-standard query. That seems pretty silly, when
you can just get the answer as a direct result of a standard LDAP query.
--
-- Howard Chu
Chief Architect, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/