Re: "Binary XML" proposals

[Olivier Dubuisson <Olivier.Dubuisson@francetelecom.com>]

"Clark C. Evans" wrote:
> 
> On Tue, 10 Apr 2001, Al Snell wrote:
> > I'm mainly after speed and storage
> 
> Look at the hierarchical binary format called ASN.1

ASN.1 is certainly hierarchical, but not binary (ASN.1 is a datatype
specification language that can be translated to your favourite implementation
language).
What is binary is the encoding rules (called BER or PER) that are associated
with ASN.1. I recommend PER to people looking for compacity and 
encoding/decoding speed.

> it has a rather direct mapping to/from XML.  There is
> a group working on that mapping.  Why invent a format
> when one already exists?

Thanks so much! The ASN.1 group is currently meeting in Los Angeles to
progress this work.
One advantage in using a standardized solution vs. an ad-hoc one is that it 
improves interoperability.
Information can be found at: http://asn1.elibel.tm.fr/xml/
If there are people interested in these mappings, it would be my pleasure
to receive their comments (to me directly -- please indicate which mapping
you're interested in: ASN.1 -> XML or XML -> ASN.1) and associate them to our 
work to make sure that we end up with what people are looking for. 

Finally allow me to say again that, even though ITU-T Recommendations and ISO 
standards are not usually freely available, ITU-T allows each and every one to 
freely download 3 Recommendations from their website (http://www.itu.int).
-- 
Olivier DUBUISSON (ITU-T ASN.1 Rapporteur)
france telecom R&D
     _                 DTL/MSV - 22307 Lannion Cedex - France
    ( )           tel: +33 2 96 05 38 50 - fax: +33 2 96 05 39 45
    / \/               --------------------------------------
    \_/\               Site ASN.1 : http://asn1.elibel.tm.fr/