Subject: Re: [xsl] Using absolute path when context item is an atomic value xslt 2.0 From: andrew welch <andrew.j.welch@xxxxxxxxx> Date: Tue, 18 Oct 2005 18:07:35 +0100 |
> andrew> This seems cumbersome, so I'm probably not using "1 to 10" > andrew> in the correct way. > > It depends upon what you are trying to do. As far as I can see, your > [.] could be replaced by [position < 11], and then you wouldn't need > the 1 to 10 at all. > But maybe I'm misunderstanding your intention. It's just an example to demonstrate what happens when the context is an atomic value. > andrew> Actually, I can't see why '/' would ever select anything > andrew> when the context item is an atomic value, so why doesn't > andrew> it keep it's pointer to the original root. > > Suppose there WASN'T an original root? There is no requirement in XSLT > 2.0 for there ever to be a document root. > How do you define "original"? If it did what it usually does when context is an actual node (even if its from a rootless tree) - when the context is an atomic value its an error to try and select any nodes at all, which is strange because you would expect the two could co-exist happily. As I say, I haven't spent much time processing atomic values yet so my expectations might be off, but I think it's intuitive that: <xsl:template match="node"> <xsl:for-each select="1 to 10"> <xsl:apply-templates/> would apply-templates to <node> 10 times. This isn't possible because the context node is an atomic value and of course it makes no sense to apply-templates that, so it's an error. As Mike said in another reply, they thought about having a context document that would remain when the context item was an atomic value - which makes most sense to me - but it was dropped so the alternative is to recreate that with variables. The concept of the context "node" being an atomic value adds quite a bit to the learning curve...
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