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Hello,
I'm a bit confused with the Namespaces in XML Recommendation and actual
behaviour of some popular programs. I'd like to ask some questions to
clear my doubts.
First, as I understand, if an attribute has no ns prefix, and the
attribute's element has a ns prefix, then the attribute inherits the ns
URI from the element. So the following two XML documents are equal:
1) <ns:elem xmlns:ns="ns:ns:ns" ns:attr="smth" />
2) <ns:elem xmlns:ns="ns:ns:ns" attr="smth" />
Using the James Clark notation, the both examples define the following:
<{ns:ns:ns}elem {ns:ns:ns}attr="smth" />
Am I right?
If I'm right with the first, then here is the second question: Are there
exceptions for some namespaces? One XSLT processor doesn't accept the
following start of XSLT:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xsl:version="1.0">
The error message is:
Error at xsl:stylesheet on line 1 of file:<filename>:
Attribute xsl:version is not allowed on this element
Should I report a bug to the developers?
The next question is: Does XPath have similar ns inheritance?
When I write "/xsl:stylesheet/@version", what is the correct
interpretation, the first or the second?
1) /{http://www.w3.org/1999/XSL/Transform}stylesheet/
@{http://www.w3.org/1999/XSL/Transform}version
2) /{http://www.w3.org/1999/XSL/Transform}stylesheet/@version
Thank you in advance for comments.
--
Oleg Paraschenko olpa@ http://xmlhack.ru/ XML news in Russian
http://uucode.com/blog/ Generative Programming, XML, TeX, Scheme
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