Thanks Geert.
My question is not in relation to XSLT. I was talking about the
namespace prefix resolution in general for XPath. For example, in Java,
JAXP 1.3 has some APIs to process XPath given a context ( likewise DOM
Level 3 has some APIs). These APIs are application independent. I guess,
the namespace mappings available in scope to the context node will be
the deciding factor, right?. Pls, correct me if I am wrong.
Thanks,
Prakash
Geert Josten wrote:
Hi,
The answer should be pretty clear, it all depends on how you declare
the namespaces in your XSL stylesheet... :)
1. If we have a XPath like "//sup:name", how will the XPath processor
know which "sup:name" will have to be returned? (considering that
there are two sup:name elements that are in two different namespaces.
<xsl:value-of select="//sup:name" xmlns:sup="http://www.suppliers.com";
/> will result in the first one.
<xsl:value-of select="//sup:name"
xmlns:sup="http://www.anothersuppliers.com"; /> will result in the
second one.
You will probably choose to assing prefix sup1 to the first namespace
and sup2 to the second. If you want both, you can then simply specify
//sup1:name|//sup2:name (or //*:name in XSLT 2.0 altogether)
2. Similarly, if we have a XPath such as "//order", which "order"
will be considered considering that there are two order elements both
in default namespace (first order element is actually in null
namespace whereas the second one in default namespace declared in the
root element)
Likewise. I expect that //order results in the first when you don't
specify a default namespace, and in the second if you use
xmlns="http://www.customers.com";.
It is adviced not to use default namespaces in XSL stylesheets, though.
Cheers,
Geert
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