RE: NOT filter question

["Jim Sermersheim" <jimse@novell.com>]

(&(height=*)(!(height<6))) works to weed out all height-impared people
with all versions

>>> "Ramsay, Ron" <Ron.Ramsay@ca.com> 9/1/04 7:14:44 PM >>>
It was changed in X.500:2000.

Just on a side note, it doesn't make sense to return TRUE.

Consider the filter: !(height<5)

If there is no height attribute, this, according to you, should
evaluate to true. But this implies that height >= 5.

Say you were forming a volleyball team and you searched you company's
directory for all employees at least 6' high. You then invite them to
join a team. On the first day of training you turn up and they're all
midgets!

Ron

-----Original Message-----
From: Kurt D. Zeilenga [mailto:Kurt@OpenLDAP.org] 
Sent: Thursday, 2 September 2004 01:46
To: Ramsay, Ron
Cc: John McMeeking; ietf-ldapbis@OpenLDAP.org 
Subject: RE: NOT filter question


X.501(93), 8.7.3:
>An AVA is:
>a) undefined, if any of the following hold:
>1) the attribute type is unknown,

CN is (presumed) known.

>2) the attribute type has no equality matching rule,

CN has an equality matching rule.

>3) the value does not conform to the data type indicated by the syntax
of the assertion of the attribute's
>equality matching rule;

"bob" conforms to assertion syntax.

>b) true, if the entry contains an attribute of that type, one of whose
values matches that value;

The entry doesn't contain CN.

>c) false, otherwise.

(CN=bob) is False.  (!(CN=bob)) is True.


At 07:18 PM 8/31/2004, Ramsay, Ron wrote:
>Many (most?) LDAP servers evaluate it to true.

I would hope so.

Kurt