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From jcalla...@sphere.com
Subject Re: Schematron transform in a Cocoon pipeline
Date Wed, 22 Jan 2003 12:24:02 GMT
Oskar,

Excellent suggestion.  The XPATH of the error would be very useful for
debugging.  What applications of Schematron have you done within Cocoon?
So far, I'm using it to validate uploaded documents.

-- jack

> 
> Hi Jack,
> 
> I have done the same to validate an XML document with an schematron. I think
> that it would be also useful to get the XPATH path of the errors in the XML
> output. The template which does this is done in skeleton1-5 (<axsl:template
> match="*|@*" mode="schematron-get-full-path">); so you have to call it from
> the assert template:
> 
> <xsl:template match="sch:assert | assert">
>     <xsl:if test="not(@test)">
>         <xsl:message>Markup Error: no test attribute in
> &lt;assert></xsl:message>
>     </xsl:if>
>     <axsl:choose>
>         <axsl:when test="{@test}"/>
>         <axsl:otherwise>
>             <error> <!--my xml output-->
>                 <message> <!--my xml output-->
>                     <xsl:call-template name="process-assert">
>                     <xsl:with-param name="role" select="@role"/>
>                     <xsl:with-param name="id" select="@id"/>
>                     <xsl:with-param name="test"
> select="normalize-space(@test)" />
>                     <xsl:with-param name="icon" select="@icon"/>
>                     <xsl:with-param name="subject" select="@subject"/>
>                     <xsl:with-param name="diagnostics"
> select="@diagnostics"/>
>                     </xsl:call-template>
>                 </message>
>                 <location> <!--my xml output-->
>                     <axsl:apply-templates mode="schematron-get-full-path"
> select="self::*"/> <!--XPATH path of the error-->
>                 </location>
>             </error>
>          </axsl:otherwise>
>     </axsl:choose>
> </xsl:template>
> 
> Oskar
> 
> ----- Original Message -----
> From: "John R. Callahan" <jcallahan@sphere.com>
> To: <cocoon-users@xml.apache.org>
> Sent: Tuesday, January 21, 2003 9:58 PM
> Subject: Schematron transform in a Cocoon pipeline
> 
> 
> > This seems too simple, but I wanted to see if I could
> > use Schematron generated XSLT to validate some
> > XML in a Cocoon pipeline.  This might be used for
> > validating uploaded  XML files for example.
> >
> > I downloaded the latest Schematron skeleton (1.5),
> > then generated some XSLT from a set of assertions,
> > and then put it into a transform in a pipeline with some
> > data:
> >
> > <map:match pattern="*.xml">
> >   <map:generate src="{1}.xml"/>
> >   <map:transform src="asserts1.xsl"/>
> >   <map:serialize type="xml"/>
> > </map:match>
> >
> > <!-- build the Schematron generated XSLT -->
> > <map:match pattern="asserts1.xsl">
> >   <map:generate src="asserts1.sch"/>
> >   <map:transform src="skeleton1-5.xsl"/>
> >   <map:transform src="store.xsl">
> >       <map:parameter name="file" value="asserts1.xsl"/>
> >       <map:parameter name="dir" value="."/>
> >   </map:transform>
> >   <map:transform type="write-source"/>
> >   <map:serialize type="xml"/>
> > </map:match>
> >
> > (see below for the source code for store.xsl)
> >
> > Unfortunately, the Schematron skeleton puts out plain
> > text messages so the output from data1.xml isn't well-formed
> > XML.  What I wanted was a series of applicable
> > Schematron messages as XML output.  So, I altered
> > the skeleton somewhat and now I works!
> >
> > My alterations to the skeleton were pretty simple:
> >
> > (1)  Add the following template:
> >
> > <xsl:template match="sch:error | error" mode="text">
> >      <xsl:copy-of select="."/>
> > </xsl:template>
> >
> > (2) Wrap a <sch:results> around the "/" template:
> >
> >   <axsl:template match="/">
> >       <sch:results>
> >           <xsl:call-template name="process-root">
> >             ...
> >           </xsl:call-template>
> >       </sch:results>
> >   </axsl:template>
> >
> > Finally, you must wrap all messages in the .sch file with
> > <sch:error>...</sch:error> as follows:
> >
> > <sch:schema xmlns:sch="http://www.ascc.net/xml/schematron">
> > ...
> > <sch:assert test="(@Title = 'Mr' and Sex = 'Male') or @Title != 'Mr'">
> >   <sch:error>If the Title is "Mr" then the sex of the person must be
> "Male".</sch:error>
> > </sch:assert>
> > ...
> > </sch:schema>
> >
> > Enjoy!
> >
> > -- jack
> >
> >
> > (The XSLT file "store.xsl" is my own brew to wrap an
> > element around the input source for use by the subsequent
> > SourceWriterTransformer:
> >
> > <?xml version="1.0" encoding="UTF-8"?>
> > <!-- CVS: $Id: store.xsl,v 1.1 2002/12/16 11:04:11 callahan Exp $ -->
> >
> > <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> >
> > <xsl:param name="file" select="'foo'"/>
> > <xsl:param name="dir" select="'foo'"/>
> >
> > <xsl:template match="/">
> >     <source:write xmlns:source="http://apache.org/cocoon/source/1.0">
> >  <source:source><xsl:value-of select="$dir"/>/<xsl:value-of
> select="$file"/></source:source>
> >  <source:fragment>
> >      <xsl:copy-of select="."/>
> >  </source:fragment>
> >     </source:write>
> > </xsl:template>
> >
> > </xsl:stylesheet>
> > )
> >
> >
> >
> > ---------------------------------------------------------------------
> > Please check that your question  has not already been answered in the
> > FAQ before posting.     <http://xml.apache.org/cocoon/faq/index.html>
> >
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> >
> 
> 
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