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- To: Michael Kay <mike@saxonica.com>
- Subject: Re: [xml-dev] how to use xml:base and relative URLs with SAX/Java?
- From: Elliotte Harold <elharo@metalab.unc.edu>
- Date: Sun, 11 Dec 2005 10:07:30 -0500
- Cc: 'Anil Philip' <goodnewsforyou@yahoo.com>, xml-dev@lists.xml.org
- In-reply-to: <20051210162238.4C6614842C@metalab.unc.edu>
- References: <20051210162238.4C6614842C@metalab.unc.edu>
- User-agent: Thunderbird 1.5 (Macintosh/20051025)
Michael Kay wrote:
>> 1. However, I get validation error: "Element audioClip
>> is based on a simple type. Attribute 'xml:base' is not
>> defined in the schema instance namespace (xsi)."
>
> Correct: if the schema doesn't allow xml:base, then you can't use it. The
> only privileged attributes that you can use without declaring them are the
> xsi: attributes defined in the XML schema spec itself, such as xsi:type.
Actually if the schema doesn't support xml:base all that means is that
the document is invalid. You can still use it despite the validity error
if the tool/API you're using supports xml:base. SAX parsers normally
don't support it as far as I know. XOM 1.1 does support it. I'm not sure
what would happen to XOM if a SAX parser suddenly started supporting it.
There might be double trouble there. However, so far that hasn't been an
issue. XOM just reads the attributes and uses that and the information
returned by the Locator interface to calculate the appropriate base URI
values. Unless you tell it to validate, it will completely ignore
whatever the schema says.
--
Elliotte Rusty Harold elharo@metalab.unc.edu
XML in a Nutshell 3rd Edition Just Published!
http://www.cafeconleche.org/books/xian3/
http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/ref=nosim
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