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Re: xmlns

From: Vix <vixcc@yahoo.com>
Date: Fri, 25 Jan 2002 19:13:19 -0800 (PST)
Message-ID: <20020126031319.73998.qmail@web21107.mail.yahoo.com>
To: Masayasu Ishikawa <mimasa@w3.org>, frank.ellermann@t-online.de
Cc: www-validator@w3.org
--- Masayasu Ishikawa <mimasa@w3.org> wrote:
> Frank Ellermann <frank.ellermann@t-online.de> wrote:
> 
> > Hi, in http://www.w3.org/TR/REC-xml-names/ I found a nice way 
> > to change the relevant XML namespace on the fly in a document.
> > 
> > I tried this with attribute target= of <base> resp. align= of
> > <img>, i.e. I used a validated XHTML 1.0 transitional document,
> > modified it to be strict, and added xmlns="...transitional" to
> > <base> and <img> (before target= resp. align=).
> 
> Note that XHTML 1.0 Strict and Transitional share the same
> namespace "http://www.w3.org/1999/xhtml".  Declaring a namespace
> doesn't help for your purpose.
> 
> > The validator recognized the additional namespace (shown in the
> > header of the validator output), but marked these attributes as
> > erroneous.  In my second attempt I moved xmlns="..." up to the
> > <head> resp. <address>, but the validator still didn't like the
> > xmlns=, base=, and align= attributes.
> 
> DTD-based validation and namespaces are not really compatible.
> If you really want to perform DTD-based validation, whatever
> namespaces you want to add, you have to declare necessary
> elements and attributes appropriately in the internal or
> external DTD subset, including the xmlns attribute.
> 
> If your REALLY have to do so, you might want to look at
> "Modularization of XHTML", at:
> 
>     http://www.w3.org/TR/xhtml-modularization/

Do you know of any quick introduction to XHTML modularization?!

> Otherwise, you'd better consider schema-based validation or
> live with "well-formed but not valid" for now.
> 
> Regards,
> -- 
> Masayasu Ishikawa / mimasa@w3.org
> W3C - World Wide Web Consortium
 


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Received on Friday, 25 January 2002 22:13:19 GMT

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