Subject: Re: [xsl] Unwanted (default) namespaces. From: "David N Bertoni/Cambridge/IBM" <david_n_bertoni@xxxxxxxxxx> Date: Mon, 8 Jul 2002 17:10:58 -0700 |
> You're right; that's how I was propogating the <html:br/> tag forward. I > have to confess that namespaces are the one area of XSL (I'm currently > aware of) that I really don't have a handle on, so if you don't mind, I'd > like to "kick the dead horse" a bit. > > In the source XML document, the <html:br/> tag is completely qualified. > Why is the choice being made to associate an additional (the default) > namespace with this node? This seems like it will cause problems in > environments in which components from multiple namespaces are being > integrated. Does this mean we shouldn't define default namespaces in > situations involving multiple namespaces? I don't understand why that > node is being associated with a namespace other than what it was > explicitly referenced by. Could you describe what aspect/rule > associated with the XSL transformation causes this additional namespace > to be associated with that node? It's not a "choice," and it's not additional. If a namespace is in scope, it's in scope. Hopefully, you'll agree that if I declare a namespace bound to a particular prefix, that namespace is in scope in that subtree: <foo:bar xmlns:foo="http://foo.com"> <foo:bar/> </bar> The default namespace is no different (other than in does not apply to attributes): <bar xmlns="http://foo.com"> <foo2:bar xmlns:foo2="http://foo2.com"> <!-- The default namespace, "http://foo.com", is in scope here --> <bar/> <!-- In the namespace "http://foo.com" --> </foo2:bar> </bar> That being the case, the XSLT recommendation requires that when you copy a node, all the in-scope namespace nodes be copied to the result tree. You need to understand the XPath data model. The particulars regarding namespace nodes are here: http://www.w3.org/TR/xpath#namespace-nodes The particulars for xsl:copy are here: http://www.w3.org/TR/xslt#copying Hope that helps... Dave XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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