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Re: ANN: Regular Associations

• To: xml-dev@l...
• Subject: Re: ANN: Regular Associations
• From: Bob Foster <bob@o...>
• Date: Sat, 03 Jan 2004 21:06:41 -0600
• In-reply-to: <200401031926.i03JQxb2093311@a...>
• References: <200401031926.i03JQxb2093311@a...>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007

My quick reaction is it looks like you're proposing to validate the 
entire file to determine what schema to use for the file. Possibly many 
times. Have I misunderstood?

Again at a glance, it's hard to see why you would descend into the any 
pattern since it accepts anything. All you care about is the namespace 
on the start element.

Bob Foster
http://xmlbuddy.com/

David Tolpin wrote:

 > Hi,
 >
 > The idea is inspired by James Clark's approach to Clark's schema
 > location approach for nXML,
 > http://groups.yahoo.com/group/emacs-nxml-mode/message/259.
 >
 > I was going to implement it for my needs, but realized that a more
 > consistent solution would be more appropriate. The original proposal
 > lists a number of features which can be used to determine a document's
 > type; however, the exact set of chosen features, while can be 
practical for some applications, can become a certain obstacle for others.
 >
 > In fact, regular expressions can be used. For URIs, that is, for 
files' names,
 > there are string regular expressions, in any of the many available 
syntaxes;
 > for XML, that is, for files' contents, the regular expressions 
language is
 > Relax NG.
 > One does not need to specify a complete syntax for either URIs or 
contents
 > to choose between document types:
 > - /.*\.rng/ is a pattern for the name of a file with Relax NG grammar 
inside;
 >
 > -
 >     namespace rng = "http://relaxng.org/ns/structure/1.0"
 >     start = element rng:* {any}
 >     any = (element * {any}|attribute * {text}|text)*
 >
 >   is a Relax NG pattern for the contents of a file with Relax NG 
grammar inside.
 >
 > ARX, http://davidashen.net/rnv.html , is a tool that uses a list of 
regular
 > (string and XML) patterns to associate files with symbolic names (of 
grammars, stylesheets etc.).
 > David Tolpin
 > http://davidashen.net/

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