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Thinking about operational attribute numSubordinates...
In some cases it would be very handy if an application could
determine whether a LDAP entry is a leaf-node or not (e.g. when
displaying a search tree or doing recursive deletes). Most times
this is done by the application with issuing another one-level
search which unfortunately causes extra load on the server.
The Netscape/iPlanet Directory server is maintaining an operational
attribute numSubordinates which holds an integer with the number of
entries in the sub-tree. It would be very handy if OpenLDAP would
also implement such an attribute.