Re: [Models] An attribute value should be equal to self

Hallvard,

Hallvard B Furuseth wrote:
> Steven Legg <[email protected]>
> 
>>I will have to review that discussion yet again soon...
>>
>>It was a short thread:
>>http://www.openldap.org/lists/ietf-ldapbis/200411/msg00190.html
> 
> 
> Ah, thanks.
> 
> Kurt D. Zeilenga writes:
> 
>>At 05:20 PM 3/7/2005, Steven Legg wrote:
>>
>>>I dislike it too. I would prefer that LDAPprep removes troublesome
>>>characters instead of failing.
> 
> 
> I'm not sure that is right; it might be better to translate them to some
> otherwise unused character or leave them alone or something.

You're right. Removing the troublesome characters means that a string
with "garbage" will match a string without "garbage". I'd suggest mapping
to something like the replacement character rather than leaving the characters
alone for the reason that two distinct bad sequences might one day be made
equivalent, which would then present a problem if an attribute already has both
as values.

 > Or let
> EQUALITY match use a fallback which does not do LDAPprep if LDAPprep
> fails, like Rici suggested.

That's fine for equality matching but could dramatically change the collation
order for ordering matches. If two values are the same except for some final
bad characters then it is desirable for them to still be close in the collation
order.

Regards,
Steven