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Message-ID: <d45b08f00707221208se0c93d1lce5462fb927d220b@mail.gmail.com>
Date: Sun, 22 Jul 2007 21:08:26 +0200
From: "Emmanuel Lecharny" <elecharny@gmail.com>
Reply-To: elecharny@iktek.com
To: "Apache Directory Developers List" <dev@directory.apache.org>
Subject: Re: [LDAP] Request for ASN.1 REAL conversion to LDAP Syntax and
 MatchingRules
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References: <a32f6b020707220833p8789412q602726750ec59b4c@mail.gmail.com>

If there is no urgency, I think we just need a JIRA as a reminder...

Writing a SC for float could be a PITA, so if we can differ it for a
while, that would be perfect.

On 7/22/07, Alex Karasulu <akarasulu@apache.org> wrote:
> Hi all,
>
> I've been working on some prototypes of a mapping tool from Java to LDAP =
and
> back. The only really
> sticky point I have for mapping simple primitive properties lies in the a=
rea
> of representing real values
> in the directory.  There is no real syntax in LDAP.  Nor are there
> matchingRules for attributes with this
> syntax.  ASN.1 defines an encoding for REAL data types here:
>
>
> http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf
>
> I'm going to move forward and just ignore Java floats and doubles for now=
.
> However I would really like
> to devise a simple encoding for the base, and mantissa of these entities =
to
> be able to track them without
> rounding errors due to their persistence in the directory.  There's been =
a
> lot of conversation about this
> topic but no one has actually stepped up and done it.  Here's some links =
to
> these convos:
>
>
> http://www.openldap.org/lists/openldap-bugs/200103/msg00065.html
>
>  Does anyone think they can take a stab at writing an LDAP syntax
> description for REAL numbers
> and providing the required SyntaxChecker and matchingRules for it as well=
?
>
> Thanks,
> Alex
>
>


--=20
Regards,
Cordialement,
Emmanuel L=E9charny
www.iktek.com