Sent by: owner-ietf-ldapbis@OpenLDAP.org
To: <mcs@netscape.com>
cc: <ietf-ldapbis@OpenLDAP.org>, <Kurt@OpenLDAP.org>
Subject: Re: AttributeTypeValue and binary
My suggested change is the result of trying to keep the existing wording intact as much as possible, and also not address any issues other than the wrapper confusion. Another wordy possibility is:
A field of type AttributeValue is an OCTET STRING containing an encoding of the value syntax of the companion attribute type. When the syntax of an attribute type defines a string encoding, that encoding is used unless an option is present in the companion AttributeDescription which overrides the string-based encoding. For example, if the "binary" option is present, the value will be the binary encoding of the value.
This addresses the "wrapper" issue, the "default encoding" issue, and the "future encodings" issue.
Jim
>>> Mark Smith <mcs@netscape.com> 1/24/01 4:01:54 PM >>>
Jim Sermersheim wrote:
>
> I believe there is consensus regarding the first part of this message.
> That being that the first paragraph of section 4.1.6 is confusing, and
> leaves the reader unsure as to whether or not all binary encodings require
> an extra OCTET STRING wrapper.
>
> Unless there are objections, I will make the following change to the protocol > document:
>
> 4.1.6
> <A field of type AttributeValue takes on as its value either a string encoding of a AttributeValue data type, or an OCTET STRING containing an encoded binary value, depending on whether the "binary" option is present in the companion AttributeDescription to this AttributeValue.
> >A field of type AttributeValue is an OCTET STRING containing either a string encoding, or an encoded binary value of an AttributeValue data type, depending on whether the "binary" option is present in the companion AttributeDescription to this AttributeValue.
I think the revised text is better but still a little confusing and
awkward (although the OCTET STRING wrapper issue has been addressed).
At the risk of being "wordy" I suggest:
If the companion AttributeDescription to an AttributeValue does not
contain the "binary" option, then the AttributeValue field is an
OCTET STRING that contains a string encoded value.
If the companion AttributeDescription to an AttributeValue contains the
"binary" option, then the AttributeValue field is an OCTET STRING
that contains an encoded binary value of the AttributeValue data type.
-Mark