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Re: how to use xml:base and relative URLs with SAX/Java?

• To: Elliotte Harold <elharo@m...>, ElektonikaMail@y...
• Subject: Re: how to use xml:base and relative URLs with SAX/Java?
• From: Anil Philip <goodnewsforyou@y...>
• Date: Mon, 12 Dec 2005 10:35:26 -0800 (PST)
• Cc: xml-dev@l...
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Hello,
I got the error while trying to validate the xml
instance against the schema (by File|Save in XML Spy)
- *not* during runtime.

I am using the default SAX parser in JDK 1.5.

My application uses an xml file that contains urls
(among other things) of audio clips. The clips start
out on the local desktop, and are transferred (with
the XML file) to a server. So the base url is going to
change. So I think I need to be able to have relative
URLs. 

Can anyone please advise or point me to any tutorials
how to use it in Java with the SAX parser?
I have been going through Elliotte Harold's online
book "XML with Java" (but didnt find any treatment of
xml:base) and googling for any other material.
-
thanks,
Anil

--- Elliotte Harold <elharo@m...> wrote:

> 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@m...
> 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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