Re: [xsl] document() function and error-handling

["Dimitre Novatchev" <dnovatchev@xxxxxxxxx>]

Open the document prior to starting the XSLT transformation, then pass
it as parameter to the transformation (in case the file did not exist,
pass an empty node-set as the value of the parameter).

Read more about the  IXSLProcessor.addParameter()  method.


-- 
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
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Never fight an inanimate object
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You've achieved success in your field when you don't know whether what
you're doing is work or play



On Jan 3, 2008 9:17 AM, Scott Trenda <Scott.Trenda@xxxxxxxx> wrote:
> Robert -
> Server-side transformation, so it's hitting the file system. You have a good idea there, but I couldn't configure the web server like that in the first place. (huge system, IT throws a fit if we ask for anything to be changed. you know how it is.)
>
> Michael -
> Wish I had an XSLT 2.0 processor available for regular use at work. :/ We've gone into this debate before, but I'm pretty much stuck with what's here, at least for now.
>
>
> That said, does anyone know if MSXML provides a proprietary checking/handling function, or at least a workaround for this? I ask because I'm also trying to move a bunch of messy client-side XML.load() handling to server-side XSLT, but XML.load() handles invalid URIs gracefully, while document() does not. It'd be nice to be able to do the transformation in one pass, rather than having to do an intermediate transform simply to check the existance of the file URIs specified in the document source.
>
> ~ Scott
>
>
> -----Original Message-----
> From: Robert Koberg [mailto:rob@xxxxxxxxxx]
> Sent: Thursday, January 03, 2008 11:07 AM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] document() function and error-handling
>
>
> I will assume this is in a web environment. You could configure your web
> app/server to return a well-formed error page when you get a 404 (and
> disregard it if you want).
>
> best,
> -Rob
>
> -----Original Message-----
> From: Michael Kay [mailto:mike@xxxxxxxxxxxx]
> Sent: Thursday, January 03, 2008 11:05 AM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>
> Subject: RE: [xsl] document() function and error-handling
>
> You're right, this question is specific to the processor. XSLT 1.0 makes it
> implementation-defined what happens when you ask for a non-existent
> document, and there's no mechanism in the standard for testing whether the
> document exists or for recovering if it doesn't. XSLT 2.0 has a
> doc-available() function for this purpose.
>
> Michael Kay
> http://www.saxonica.com/
>
> > -----Original Message-----
> > From: Scott Trenda [mailto:Scott.Trenda@xxxxxxxx]
> > Sent: 03 January 2008 16:49
> > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> > Subject: [xsl] document() function and error-handling
> >
> > Quick question, might be specific to the MSXML XSLT processor.
> >
> > I'm trying to reference two different files passed in as
> > parameters to a transformation using the document() function.
> > If the files are blank or valid URIs (the URI handling is
> > correct), the transformation works as expected, but if the
> > URI points to a non-existant file, MSXML errors out with code
> > 0x800c0006: "The system cannot locate the object specified."
> > I'm developing a central framework for several different
> > applications, and I don't know if the application is actually
> > going to create the file I'm trying to reference here. If it
> > doesn't exist, I don't care, I just want to use it in the
> > case that it does exist.
> >
> > I've played around with some different scenarios in the
> > stylesheet, and the error occurs any time I try to access the
> > variable that contains the result of the document() function,
> > even if I only want to check if it's non-empty. Is there any
> > more graceful way (for MSXML, in particular) to handle the
> > case where the URI passed to document() doesn't exist?
> >
> > I've included the stylesheet I'm using at the bottom, just in
> > case it helps.
> >
> > ~ Scott
> >
> >
> >
> > <xsl:stylesheet version="1.0"
> > xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> > xmlns:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/
> > " exclude-result-prefixes="encodingStyle">
> >
> > <xsl:param name="framework-map-file"/>
> > <xsl:param name="app-map-file" />
> >
> > <xsl:output method="text" encoding="utf-8"/>
> >
> > <xsl:variable name="framework-maps"
> > select="document($framework-map-file)"/>
> > <xsl:variable name="app-maps"
> > select="document($app-map-file )"/>
> > <xsl:variable name="maps"
> > select="$framework-maps/*/map | $app-maps/*/map"/>
> >
> > <xsl:template match="*">
> > <xsl:variable name="var-name">
> > <xsl:apply-templates
> > select="." mode="name"/>
> > </xsl:variable>
> > <xsl:for-each
> > select="$maps[normalize-space(@new) = $var-name]">
> > <xsl:value-of
> > select="concat('&lt;webSet #', normalize-space(@old), '# =
> > #', $var-name, '#&gt;&#10;')"/>
> > </xsl:for-each>
> > <xsl:apply-templates select="*"/>
> > </xsl:template>
> >
> > <xsl:template match="*" mode="name">
> > <xsl:apply-templates
> > select="parent::*" mode="name"/>
> > <xsl:choose>
> > <xsl:when
> > test="../@encodingStyle:arrayType">[<xsl:number/>]</xsl:when>
> > <xsl:otherwise>
> > <xsl:if
> > test="parent::*">.</xsl:if>
> > <xsl:value-of
> > select="name()"/>
> > </xsl:otherwise>
> > </xsl:choose>
> > </xsl:template>
> >
> > </xsl:stylesheet>