Re: Fwd: Spurious error on recursive invocation of fn:transform

On 24.11.2020 15:57, Ihe Onwuka wrote:
>
> On Tue, Nov 24, 2020 at 7:32 AM Michael Kay <[email protected]
> <mailto:[email protected]>> wrote:

>     Having said that, if you can put together a repro we'll be happy to
>     look at it. I think it's fairly clear the problem is happening
>     because the base URI is being lost through the call on
>     fn:transform(), but whether losing it is a bug or an application
>     error is something we can only determine if we study the detail.

> Here.
>
> Here is bug.xsl
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform
> <http://www.w3.org/1999/XSL/Transform>"
>                  xmlns:fn="http://www.w3.org/2005/xpath-functions
> <http://www.w3.org/2005/xpath-functions>"
>         xmlns:xs="http://www.w3.org/2001/XMLSchema
> <http://www.w3.org/2001/XMLSchema>"
>         xmlns:local="urn:local"
> version="3.0" >
>
>     <xsl:mode on-no-match="shallow-copy"/>
>     <xsl:function name="local:generateNextVersion" as="document-node()">
>        <xsl:param name="currentVersion" as="document-node()"/>
>        <xsl:variable name="isFinalVersion" as="xs:boolean"
> select="$currentVersion/* eq '3'"/>
>        <xsl:sequence select="if ($isFinalVersion)
>                              then $currentVersion
>                              else
> local:generateNextVersion(fn:transform(map {
>
>   'stylesheet-node' : doc(''),
>                                                      'source-node'     :
>   $currentVersion
>                                                              })?output)"/>
>     </xsl:function>
>
>     <xsl:template match="*">
>    <xsl:message select="."/>
>        <xsl:copy>
>           <xsl:sequence select="let $customizedResult := fn:transform(map {
>
> 'stylesheet-node' :  doc('bugs2.xsl'),
>
> 'source-node'     :  /
>                                                                 })?output
>                                 return
>   local:generateNextVersion($customizedResult)"/>
>         </xsl:copy>
>     </xsl:template>
>
>   </xsl:stylesheet>
>
> Here is bugs2.xsl
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform
> <http://www.w3.org/1999/XSL/Transform>"
>                  xmlns:fn="http://www.w3.org/2005/xpath-functions
> <http://www.w3.org/2005/xpath-functions>"
> version="3.0" >
>
>     <xsl:mode on-no-match="shallow-copy"/>
>     <xsl:template match="*">
>        <xsl:copy>
>           <xsl:value-of select=". + 1"/>
>        </xsl:copy>
>     </xsl:template>
>
>   </xsl:stylesheet>
>
> Here is input XML
>
> <bug>1</bug>
>
> Reproduction instructions.
>
> Run the transform bug.xsl against input bug.xml and see the xsl:message
> output below
>
> <bug>1</bug>
> <bug>2</bug>
>
> Change bug.xsl to test for $currentVersion eq '4' instead of 3
>
> crashes as below
>
> <bug>1</bug>
> <bug>2</bug>
> Error in bugs2.xsl:
>    XTSE0150  The supplied file does not appear to be a stylesheet
> Static error in bugs2.xsl:
>    XTSE0150  The supplied file does not appear to be a stylesheet
> Error in bugs2.xsl:
>    XTSE0150  The supplied file does not appear to be a stylesheet
> at function local:generateNextVersion in bug.xsl:
>       invoked by function call
>    In template rule with match="*" of bug.xsl
>       invoked by built-in template rule (shallow-copy)
> The supplied file does not appear to be a stylesheet

It seems to be a regression in 10.3, with lower 10.x versions it runs
through, with 9.9 (9.9.1.8J) as well.



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