Re: [xsl] Variable in XPath

Subject: Re: [xsl] Variable in XPath
From: "Dimitre Novatchev" <dnovatchev@xxxxxxxxx>
Date: Wed, 27 Jun 2007 08:49:54 -0700
Assuming that there is a value that cannot be used as a legitimate
value for the "id" attribute, define the $pId xsl:param to have this

doc('factbase.xml')/facts/class/@id = $pId
doc('factbase.xml')/facts/class[$pId = 'notId']

If it the class of possible values is known in advance, define the $pId param to any value outside this class. For example, if the possible values can only be numbers,

doc('factbase.xml')/facts/class/@id = $pId
doc('factbase.xml')/facts/class[not(number($pId) = number($pId))]

-- Cheers, Dimitre Novatchev --------------------------------------- Truly great madness cannot be achieved without significant intelligence. --------------------------------------- To invent, you need a good imagination and a pile of junk ------------------------------------- You've achieved success in your field when you don't know whether what you're doing is work or play

On 6/27/07, Garvin Riensche <g.riensche@xxxxxxx> wrote:

I hope that anyone can help me with the following. I want to write a
stylesheet that is used to check if an element (class) with a special ID
which is given as variable from the commandline exists in the source or
not. If no variable is supplied I want to test if there are "class"
nodes at all. Of course it's no problem to check if a node with a
special ID exists or not. But what do I use as default value of the
variable so that all "class" nodes are selected if no variable is supplied.

(not working) example:
  <class id="2" owner="1" name="A"/>
  <class id="3" owner="1" name="B"/>


<xsl:variable name="id" select="attribute::*"/>

<xsl:template match="//condition/and-condition">
<xsl:when test="doc('factbase.xml')/facts/class[@id eq $id]">

The test should be true if $id is set to "2" or "3" and if $id is not
set at all. So, the key is the comparison "@id eq $id" and the default
value of $id. "attribute::*" as default value is obviously wrong. Which
default value do I have to use to test if class nodes exist at all?


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