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RE: Making XPath expressions out of variables

2003-10-29 09:03:42
You either need to generate the whole stylesheet before you start, or
you need to make extensive use of the xx:evaluate() extension function
(and an XSLT processor that supports it).

Michael Kay

-----Original Message-----
From: owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com 
[mailto:owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com] On Behalf Of 
Richard Lewis
Sent: 29 October 2003 13:09
To: XSL-List(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Making XPath expressions out of variables


This is a theoretical bit of XSL code which I need a 
practical version of:

All the variables are passed as parameters to the stylesheet.

<xsl:for-each select="//$record-type">
      <xsl:sort select="$sort-by" order="$sort-order" />
      <xsl:if test="$lh-operator $operand $rh-operator">
              <tr>
                      <xsl:for-each select="*">
                              <td><xsl:value-of select="." /></td>
                      </xsl:for-each>
              </tr>
      </xsl:if>
</xsl:for-each>

Any ideas? Is it possible? Or do I need to use this basic 
construct multiple 
times using <xsl:if> for each variable and the correct names 
of nodes and 
operands. (The number of permutations is massive!)

Cheers,
Richard
-------------------------------------------------------------
This is question I was going to ask (it might make things clearer):

Is there a way of selecting nodes which have the name 
$some-variable using an 
XPath expression?

e.g. <xsl:for-each select="//$some-variable">

would, in theory (though not in practice - I've tried it!), 
select all the 
nodes whose name is equal to whatever the value of $some-variable is.
-------------------------------------------------------------


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