Subject: Re: [xsl] namespace issue From: Jeni Tennison <jeni@xxxxxxxxxxxxxxxx> Date: Tue, 11 Dec 2001 16:28:46 +0000 |
Hi Dave, >> If by empty ns you meant empty namespace name rather than empty >> prefix then that is special in that it can only be assigned to the >> default namespace (ie the empty prefix) you can't assign a non >> empty prefix to the non-namespace. > > I've now read that eight times and I'm off to let me head heal. > > I think it means > <el xmlns=""> == the default namespace, is 'special' > > I think the double negative means I can't do <pre:el xmlns=""> Not quite. The namespace name is the namespace URI used to identify the namespace, our favourite example being "http://www.w3.org/1999/XSL/Transform". An empty namespace name ("") means 'no namespace' or 'null namespace'. The namespace prefix is the character(s) that you associate with the namespace URI within a particular document. We usually use 'xsl' as the namespace prefix for the XSLT namespace, for example. An empty namespace prefix is what you use with the default namespace - element names without a prefix (with an empty namespace prefix) are in the default namespace. What David said that you can't assign a non-empty namespace prefix to an empty namespace name. That means you can't do: <el xmlns:pre="">...</el> You can, however, assign an empty namespace prefix to a non-empty namespace name (that's what you do when you create a default namespace): <el xmlns="my-namespace">...</el> or You can also assign an empty namespace prefix to an empty namespace name, and, of course, a non-empty namespace prefix to an non-empty namespace name: <pre:el xmlns="" xmlns:pref="my-namespace">...</pre:el> I hope that helps, Jeni --- Jeni Tennison http://www.jenitennison.com/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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