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Re: Moving towards "strict" xml:id checking

From: Norman Walsh <Norman.Walsh@Sun.COM>
Date: Thu, 02 Sep 2004 13:05:11 -0400
To: public-xml-core-wg@w3.org
Message-id: <871xhklhyw.fsf@nwalsh.com>
/ John Cowan <jcowan@reutershealth.com> was heard to say:
| Norman Walsh scripsit:
|
|> The proposal I was trying to make when we ran out of time is the following:
|> 
|>   It is an error for an ID value to be specified more than once.
|>   A processor which detects this error MUST report it. Processors
|>   SHOULD attempt to detect all such errors.
|
| My objection to this is from the viewpoint of SAXish or other stream
| processors, which are being asked to keep an ID table requiring O(n)
| space, where n is the document length.  Currently they need only a
| stack requiring space proportional to the document's nesting depth.

That was the reason for making "attempt to detect all such errors" a
SHOULD. I could live with just being silent on that.

| I'd rather see this:
|
|    It is an error for an ID value to be specified more than once.
|    Processors MAY detect and report an error and MAY recover from it.
|
| (That's from the XML definition of "error".)

Hmm. I'm happy with "MAY detect" but I want "MUST report", I think.

                                        Be seeing you,
                                          norm

-- 
Norman.Walsh@Sun.COM / XML Standards Architect / Sun Microsystems, Inc.
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Received on Thursday, 2 September 2004 17:06:52 GMT

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