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I think the answer to your question is, yes. You can send a node to an XSLT function. If you are wondering what to use for the value of the as="" attribute, you have several choices. If you want to be very lax and accept just about anything, use as="item()*". <a href="http://www.dpawson.co.uk/xsl/rev2/exampler2.html#istar" rel="noreferrer">From David Pawson's site</a>: <blockquote> item()* .. sort of nodeset? W3C Yes, I agree it looks pretty meaningless doesn't it. However. As of CR, its pretty essential, especially if you want to use types. And want to generate, say, a nodeset.. sorry sequence, in a variable. </blockquote> <pre><code><xsl:variable name="a" select="(//h3)[position() < 3]" as="item()*"/> </code></pre> <blockquote> This creates a variable you can hack into using xpath quite readily. I.e. remember item()*. types ... a few examples. W3C From an explanatory email from Mike Kay, thanks Mike. Examples: <code><xsl:param name="x" as="item()"/></code> the parameter value can be any item (i.e. a node or atomic value). But it must be a single item. <code><xsl:param name="x" as="item()?"/></code> the parameter can be a single item or an empty sequence <code><xsl:param name="x" as="item()+"/></code> the parameter must be a sequence of one or more items - an empty sequence is not allowed <code><xsl:param name="x" as="item()*"/></code> the parameter can be any sequence of zero or more items - this places no constraints on its value. <code><xsl:param name="x" as="node()*"/></code> the parameter can be any sequence of zero or more nodes <code><xsl:param name="x" as="xs:atomicValue*"/></code> the parameter can be any sequence of zero or more atomic values (e.g. integers, strings, or booleans). item()* is the most general type possible, it matches everything, like "Object" in Java. For that reason, it can usually be omitted. But not always, for example the default type in xsl:variable is not item()* but document-node(), to ensure that <code><xsl:variable name="rtf"><a>thing</a> </xsl:variable></code> continues to behave like XSLT 1.0 Use these to specify parameters, variable types etc. </blockquote>
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