Subject: RE: [xsl] storing the result of a transformation in a param and evaluating the content From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Tue, 23 Nov 2004 09:30:31 -0000 |
> String-length only works if $content is a text node, on a result tree > fragment, it returns false every time. > > I need something that evaluates to true when a result tree fragment is > present in the variable. > The variable will always contain a result tree fragment: you are trying to test, I think, whether the fragment (which is a document node) has any child nodes. Since there are only two things you can do with an RTF in XSLT 1.0, convert it to a string or copy it to another tree, there is no way of distinguishing an RTF having a single empty element child from one that has no children. (Both have a string value of "" - it's not true that string-length works only on text nodes, but it is true that it gives you zero if there are no text nodes, regardless of how many element nodes there are.) So: you can't do it without the xx:node-set extension. Michael Kay http://www.saxonica.com/
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