Re: applying templates out of a for-each

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Subject: Re: applying templates out of a for-each
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 29 May 2009 14:34:15 -0400

At 2009-05-29 20:28 +0200, Detlef Heyn wrote:

but if i want to apply more than one element-content with the help of a for-each over the readed config-input (wich im tokenizing to seperate the certain element names) i get this error:

"F[Saxon-B 9.0.0.6]Cannot select a node here: the context item is an atomic value URL: http://www.w3.org/TR/xpath20/#ERRXPTY0020"

Correct, because you are not in a node tree when you are acting on the tokens from a string.

==================================================
<config-input>show_element:Elementname1 Elementname2</config-input>
=========================
<xsl:template name="select">
 <xsl:param name="input"/>
 <xsl:choose>
  ...
  <!-- show element -->
  <xsl:when test="contains($input,'show_element:')">
   <xsl:for-each select="tokenize(substring-after($input,':'),' ')">
    <xsl:variable name="temp_name" select="string(.)"/>
    <xsl:apply-templates select="//node()[name() = $temp_name]" mode="pure"/>
   </xsl:for-each>
  </xsl:when>
   ...
 </xsl:choose>
</xsl:template>
=========================

I understand that Saxon has a problem with applying templates inside of a for-each-loop wich is all about selecting atomic values (strings in this case)

It is not Saxon's problem at all! It is your problem for trying to use "/" when there is no current node.

* Do I guess right or don't i catch the real cause?

You have missed the real cause and blamed software for your own stylesheet problem.

* And how, if possible, do i get it work as intented?
(I'm afraid I've just overseen a simple thing)

Put the root node you want to use into a variable and then address off if it:

<xsl:variable name="top" select="/"/> <xsl:for-each select="tokenize(substring-after($input,':'),' ')"> <xsl:variable name="temp_name" select="string(.)"/> <xsl:apply-templates select="$top//node()[name() = $temp_name]" mode="pure"/> </xsl:for-each>

BTW, your use of "name()=$temp_name" is not sensitive to namespaces, which may or may not be important to you in the long run. Look up the use of node-name() and functions returning QName values.

I hope this helps.

. . . . . . . . . . . Ken

--
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Current Thread
applying templates out of a for-each Detlef Heyn - 29 May 2009 18:30:07 -0000 G. Ken Holman - 29 May 2009 18:38:05 -0000 <= Michael Kay - 29 May 2009 18:59:40 -0000

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