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Re: ASN.1 is an XML Schema Language (Fix those lists!)and Bina

• To: Alessandro Triglia <sandro@m...>
• Subject: Re: ASN.1 is an XML Schema Language (Fix those lists!)and Binary XML not needed...
• From: Robin Berjon <robin.berjon@e...>
• Date: Tue, 04 Nov 2003 18:19:26 +0100
• Cc: "'Amelia A. Lewis'" <amyzing@t...>, xml-dev@l...
• In-reply-to: <003401c3a2a4$bda48d40$25189bac@aldebaran>
• Organization: Expway
• References: <003401c3a2a4$bda48d40$25189bac@aldebaran>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031013 Thunderbird/0.3

Alessandro Triglia wrote:
> Amelia A. Lewis wrote:
>>We believe in unicode and concrete syntax.
> 
> Good.  So you don't believe in schemas.  That's fine.  Just use XML 1.0.

I don't think that that happens to be what Amy said (apologies if I 
presume wrong). The fact is that at this point in time any schema 
language for XML defines one single concrete syntax. And a fair part of 
what the ASN.1 people do not seem to understand is that the XML folks 
see that as a *good* thing.

The ASN.1 equivalent of a simple XML parser in terms of universality 
would have to properly decode (and likely handle negotiation for) BER, 
PER, CER, DER, XER, and probably LWER, OER, and SER. That's a bit of a 
behemoth to implement!

There's a lot to say in favour of minimizing the number of concrete 
syntaxes, and that's where a lot of the concerns about having *two* 
(just two!) universal formats came from at the binary infosets workshop. 
Not having two means that there'll be twenty different ones out there; 
having two may be harmful to interoperability in that it enforces (as 
opposed to just making available) an increase in options. This is a hard 
question to decide.

Choice is only technically good when you're the one choosing ;) Or at 
least, when you like all the flavours that can be chosen from.

-- 
Robin Berjon <robin.berjon@e...>
Research Scientist, Expway      http://expway.com/
7FC0 6F5F D864 EFB8 08CE  8E74 58E6 D5DB 4889 2488

• Follow-Ups:
  • Re: ASN.1 is an XML Schema Language (Fix those lists!)and Binary XML not needed...
    • From: Alaric B Snell <alaric@a...>
  • RE: ASN.1 is an XML Schema Language (Fix those lists!) and Binary XML not needed...
    • From: "Bob Wyman" <bob@w...>

• References:
  • RE: ASN.1 is an XML Schema Language (Fix those lists!) and Binary XML not needed...
    • From: "Alessandro Triglia" <sandro@m...>

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