Re: Empty IA5String

[Hallvard B Furuseth <h.b.furuseth@usit.uio.no>]

Leif Johansson writes:
>To: Hallvard B Furuseth <h.b.furuseth@usit.uio.no>
>> I can give you what might have become a real-world example at our site
>> if Directory Strings could be zero-length:  A 'vacation message'
>> attribute which the mail system would check.  If the attribute was
>> present, the mail system would send a vacation message in response to
>> incoming messages, with a standard initial text + the optional
>> user-supplied message.
>>
>> As it is, we ended up another boolean attribute which means 'there is an
>> active vacation message', and only use the vacation attribute if the
>> boolean is TRUE.
> 
> I'd say the typical solution is that the attribute is an optional 
> attribute of an objectClass indicating the function of a vacation
> message.

For a vacation message by itself, yes.  Not when it's part of an
object class for mail handling in general.  Spam and virus filtering,
forwarding, IMAP server, maildrop, etc.

> The filter is then objectClass=something rather than the
> presence-filter based on the vaction attribute.

-- 
Hallvard