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Posted to dev@xalan.apache.org by "Henry Zongaro (JIRA)" <xa...@xml.apache.org> on 2008/02/01 15:29:16 UTC

[jira] Commented: (XALANJ-2430) Circular variable/parameter reference if recursive template is used in global variable

    [ https://issues.apache.org/jira/browse/XALANJ-2430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564778#action_12564778 ] 

Henry Zongaro commented on XALANJ-2430:
---------------------------------------

It looks like the problem is caused by the definition and reference to a local variable within the top-level variable definition.  I have reduced the sample stylesheet to the following:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version='1.0'>

<xsl:variable name='countInfo'>
  <xsl:variable name='someElement'/>
  <xsl:value-of select='$someElement'/>
</xsl:variable>

<xsl:template match='/'>
  <out><xsl:value-of select='$countInfo'/></out>
</xsl:template>

</xsl:stylesheet>

I think this problem was caused by the fix to XALANJ-2108.

> Circular variable/parameter reference if recursive template is used in global variable
> --------------------------------------------------------------------------------------
>
>                 Key: XALANJ-2430
>                 URL: https://issues.apache.org/jira/browse/XALANJ-2430
>             Project: XalanJ2
>          Issue Type: Bug
>          Components: XSLTC
>    Affects Versions: 2.7.1
>         Environment: Ubuntu 7.10, java-1.5.0-sun-1.5.0.13, Xalan 2.7.1, Xerces 2.9.0 (from Xalan package)
>            Reporter: Auke Schrijnen
>
> Xalan 2.7.1 won't compile an xslt when a recursive template is used in a global variable. This works in Xalan 2.7.0!
> 2.7.1 throws a TransformerException: Circular variable/parameter reference in '[variable(countInfo)]'.
> Example:
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version='1.0'>
> <xsl:template name='countRecursive'>
>     <xsl:param name='info'/>
>     <xsl:param name='count' select='"1"'/>
>     <xsl:choose>
>         <xsl:when test='$info != "" and number($count) &lt; 4'>
>             <xsl:call-template name='countRecursive'>
>                 <xsl:with-param name='info' select='substring-after($info, " ")'/>
>                 <xsl:with-param name='count' select='$count + 1'/>
>             </xsl:call-template>
>         </xsl:when>
>         <xsl:otherwise>
>             <xsl:value-of select='$count'/>
>         </xsl:otherwise>
>     </xsl:choose>
> </xsl:template>
> <xsl:variable name='countInfo'>
>         <xsl:variable name='someElement'>
>                 <xsl:value-of select='/root/vars'/>
>         </xsl:variable>
>         <xsl:call-template name='countRecursive'>
>             <xsl:with-param name='info' select='$someElement'/>
>         </xsl:call-template>
> </xsl:variable>
> <xsl:template match='/'>
>     <xsl:element name='count'>
>         <xsl:value-of select='$countInfo'/>
>     </xsl:element>
> </xsl:template>
> </xsl:stylesheet>

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