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RE: XHTML 1.1 DTD, Bug in AElfred (used by saxon)

From: Christian Wolfgang Hujer <Christian.Hujer@itcqis.com>
Date: Fri, 14 Sep 2001 16:48:21 +0200
To: "keijo.kortelainen" <keijo.kortelainen@orchimedia.com>, <www-html@w3.org>, <info@opentext.com>
Message-ID: <000801c13d2c$4cbe9ba0$3e95e23e@andromeda>
Hello all,

I think XHTML 1.1 DTD should be changed, but this is not a bug in XHTML 1.1
DTD but in XML Parsers.

Here is what I got with saxon is an error in saxon's XML Parser, AElfred:
Transformation failed: java.io.FileNotFoundException:

The reason is:
http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd *declares* this Entity:
<!ENTITY % xhtml-model.mod PUBLIC
	"-//W3C//ENTITIES XHTML 1.1 Document Model 1.0//EN"
(contains relative URI: xhtml11-model-1.mod)

*references* this Entity:
<!ENTITY % xhtml-model.module "INCLUDE" >
	<!-- instantiate the Document Model module declared in the DTD driver -->
(changed formatting of cites for readability)

From the XML Recommendation:
"Unless otherwise provided by information outside the scope of
this specification (e.g. a special XML element type defined by a particular
DTD, or a processing instruction defined by a particular application
relative URIs are relative to the location of the resource within which the
entity declaration occurs."

Means *declaration*, not *reference*.
But AElfred resolves the URI of the external parsed entity "xhtml-model.mod"
at the *reference* the entity, not at the *declaration* of the entity.

So this is what AElfred resolves:
And this is what XML Parsers must load:

So AElfred, at least the version used by saxon, has a bug.

Since more XML Parsers and software based on them might have this bug, and
since it will take some time until these bugs are fixed, I suggest, that the
HTML working group changes the URI of the drivers to be absolute URLs.

I suggest changing
<!ENTITY % xhtml-model.mod PUBLIC
	"-//W3C//ENTITIES XHTML 1.1 Document Model 1.0//EN"
<!ENTITY % xhtml-model.mod PUBLIC
	"-//W3C//ENTITIES XHTML 1.1 Document Model 1.0//EN"


Christian Hujer

> -----Original Message-----
> From: www-html-request@w3.org [mailto:www-html-request@w3.org]On Behalf
> Of keijo.kortelainen
> Sent: Thursday, September 13, 2001 12:42 PM
> To: www-html@w3.org
> Subject: Re: XHTML 1.1 DTD
> I'm getting the same error when using either msxml, saxon, ixslt or any
> other validating parser on my machine. All point out to
> xhtml-framework-1.mod file line 53. Please check the status of the
> dtd/mod-file in case it is corrupted.
> Yours truly
> -keijo kortelainen-
> ---------------
> 2K mediat
> www.2kmediat.com
Received on Friday, 14 September 2001 10:47:49 UTC

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