Generating unique object ids

[Markus Schaber <schaber@scan-plus.de>]

Hello,

Is there any way to atomically create unique object IDs / object names
in openldap?

Our scenario:
Our customers get unique, but ugly identifiers which are created by a
mechanism not under our control.

Now we want to enable them to create alias names via web interface. As
this alias names are to be used for creation of web urls and email
adresses, they must be unique.

Now, how can I ensure in a bullet-proof way that an alias name is
unique?

Simply looking whether it exists before adding it to the directory is
not considered bullet-proof as there could be concurrent access by
several customers.

In SQL, I'd use transactions, but I never heard of transactions
existing in LDAP.

Thanks,
Markus


-- 
-----------------------------------------------------------------------
|  ScanPlus GmbH NOC Ulm                       Tel +49 731 92013 106  |
|  Koenigstr. 78 * D 89077 Ulm                 Fax +49 731 92013 290  |
|  http://www.scan-plus.de/                 Amtsgericht Ulm HRB 3220  |
|  mailto:info@scan-plus.de           Geschaeftsf.: Juergen Hoermann  |
-----------------------------------------------------------------------
Diese  E-Mail  koennte  vertrauliche  und/oder  rechtlich   geschuetzte
Informationen enthalten. Wenn Sie nicht der richtige Adressat sind oder
diese E-Mail irrtuemlich erhalten haben, informieren Sie  bitte  sofort
den Absender und vernichten Sie diese  Mail.  Das  unerlaubte  Kopieren
sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. 
-----------------------------------------------------------------------
This e-mail may contain  confidential  and/or  privileged  information.
If you are not the intended recipient (or  have  received  this  e-mail
in error) please notify the sender immediately and destroy this e-mail.
Any unauthorised copying, disclosure or distribution  of  the  material
in this e-mail is strictly forbidden.
-----------------------------------------------------------------------