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Re: Multiple instances of an attribute Re: Towards X

  • From: Peter Coppens <pc.subscriptions@gmail.com>
  • To: David Lee <dlee@calldei.com>
  • Date: Sun, 12 Dec 2010 10:38:35 +0100

Re:  Multiple instances of an attribute Re:  Towards X
Would a PI not be used for that type of "guidance" to a consuming app/parser? Obviously next on that comes around will want to put XML fragments in that "csv" list :)

Peter


On 11 Dec 2010, at 19:41, David Lee wrote:

Not opposed to it, but once you change the separator character, you need to consider the escaping and quoting …
 
 
----------------------------------------
David A. Lee
http://www.xmlsh.org/
 
From: Kurt Cagle [mailto:kurt.cagle@g...] 
Sent: Saturday, December 11, 2010 1:33 PM
To: David Carlisle
Cc: stephengreenubl@g...; XML Developers List
Subject: Re: Multiple instances of an attribute Re: Towards XML 2.0
 
I understand that the original reason for the use of white space came from the id of NMTOKEN objects in DTDs, but it may be that perhaps a better solution to lists may be to define a list separator at the beginning of an xml document:
 
<foo xml:separator=";">
     <bar value="bat;bin"/>  <-- items "bat" and "bin" -->
     <bar value="bat bin"/>  <!-- one item "bat bin" -->
     <bar value="This is a test.;This is only a test."/> <!-- items "This is a test" and "This is only a test" -->
     <bar value="This&59;that;The other"/> <!-- items "This;that" and "The other" -->
</foo>


Kurt Cagle
XML Architect
Lockheed / US National Archives ERA Project


On Thu, Dec 9, 2010 at 10:22 AM, David Carlisle <davidc@n...> wrote:
On 09/12/2010 15:18, Stephen Green wrote:
in XML, why not also allow

<foo value="bar" value="spam"/>
 
because that's equivalent to a json object with a repeated field name which isn't allowed there either.

<foo value="bar spam"/>

is allowed, and xsd or relax would allow you to type that automatically to have it parsed as a list if you want. Which is the equivalent of
the json you showed.  As white space is used as the separator for XSD lists, you'd need to quote white space in values, but that's no different to having to quote , and " which are the separators in json.




David


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