xsl-list
[Top] [All Lists]

RE: Problem applying XSL to XML that uses a schema

2004-12-09 03:35:14
Hi Mike,
  I thought, Schema Aware XSLT processor was
neccessary in this case. But from your reply, it seems
it is not required in this case.. Can you please tell,
under what cases Schema Aware processor is required..?

Regards,
Mukul

--- Michael Kay <mike(_at_)saxonica(_dot_)com> wrote:


I am trying to apply an XSL stylesheet to an XML
file that 
uses a schema.
I will discuss first what does work.

The following is the input XML file (XML1):
<?xml version="1.0" encoding="UTF-8" ?>
<!-- MainComment1 -->
<mainelement>

   <!-- SubComment1.1 -->
   <subelement name="sub1">content</subelement>
   <!-- SubComment1.2 -->

   <!-- SubComment2.1 -->
   <subelement name="sub2">content</subelement>
   <!-- SubComment2.2 -->

</mainelement>
<!-- MainComment2 -->


The following is the xsl I have so far (XSL1):
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output method="xml" version="1.1"
indent="yes" />

<xsl:template match="comment()">
  <xsl:comment><xsl:value-of
select="."/></xsl:comment>
</xsl:template>

<xsl:template match="subelement|@*">
    <xsl:copy>
        <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="mainelement|@*">
  <xsl:copy>
      <xsl:apply-templates select="node()|@*"/>

      <xsl:comment >NewSubComment1.1</xsl:comment>
      <xsl:text>
</xsl:text>
      <subelement
name="newsub">content</subelement>
      <xsl:comment >NewSubComment1.2</xsl:comment>
  </xsl:copy>
</xsl:template>
</xsl:stylesheet>

Both your template rules match the same attribute
nodes, which is
technically an error, though many processors will
take the recovery action,
which is to use the second template rule. Both
template rules do the same
thing with attributes, so this isn't a big problem,
but it's untidy.


The following is the output from applying XSL1 to
XML1 (OUTPUT1):
<?xml version="1.0" encoding="UTF-8"?>
<!-- MainComment1 -->
<mainelement>

   <!-- SubComment1.1 -->
   <subelement name="sub1">content</subelement>
   <!-- SubComment1.2 -->

   <!-- SubComment2.1 -->
   <subelement name="sub2">content</subelement>
   <!-- SubComment2.2 -->

<!--NewSubComment1.1-->
<subelement name="newsub">content</subelement>
<!--NewSubComment1.2-->

</mainelement>
<!-- MainComment2 -->


This is exactly what I want without the schema
(OUTPUT1).  
The problem is when
the XML file uses a schema which is my real world
problem.

The following is the input XML file that uses the
schema (XML2):
<?xml version="1.0" encoding="UTF-8" ?>
<!-- MainComment1 -->
<mainelement
    xmlns="http://www.mydomain.com/mainelement";
   

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
   

xsi:schemaLocation="http://www.mydomain.com/mainelement
file:///C:/schemas/mainelement.xsd">

   <!-- SubComment1.1 -->
   <subelement name="sub1">content</subelement>
   <!-- SubComment1.2 -->

   <!-- SubComment2.1 -->
   <subelement name="sub2">content</subelement>
   <!-- SubComment2.2 -->

</mainelement>
<!-- MainComment2 -->


When I apply XSL1 to XML2 I get the following
output (OUTPUT2):
<?xml version="1.0" encoding="UTF-8"?>
<!-- MainComment1 -->

   <!-- SubComment1.1 -->
   content
   <!-- SubComment1.2 -->

   <!-- SubComment2.1 -->
   content
   <!-- SubComment2.2 -->

<!-- MainComment2 -->



It's not the presence of the schema that has
scuppered this, it's the
presence of the default namespace declaration
xmlns="http://www.mydomain.com/mainelement";, which
has changed the names of
all your elements and means that they no longer
match the rules in your
stylesheet. To match an element with localname
"mainelement" and namespace
URI http://www.mydomain.com/mainelement, you need a
template rule of the
form

<xsl:template match="x:mainelement" 
             
xmlns:x="http://www.mydomain.com/mainelement";>

Michael Kay
http://www.saxonica.com/





OUTPUT2 is clearly not what I want.  I want the
exact same 
output as OUTPUT1
except with the schema location and xmlns etc. 
The following 
is the desired
output (DESIREDOUTPUT):
<?xml version="1.0" encoding="UTF-8"?>
<!-- MainComment1 -->
<mainelement
    xmlns="http://www.mydomain.com/mainelement";
   

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
   

xsi:schemaLocation="http://www.mydomain.com/mainelement
file:///C:/schemas/mainelement.xsd">

   <!-- SubComment1.1 -->
   <subelement name="sub1">content</subelement>
   <!-- SubComment1.2 -->

   <!-- SubComment2.1 -->
   <subelement name="sub2">content</subelement>
   <!-- SubComment2.2 -->

<!--NewSubComment1.1-->
<subelement name="newsub">content</subelement>
<!--NewSubComment1.2-->
</mainelement>
<!-- MainComment2 -->





Can anyone help me understand how to modify my
XSL1 to create 
the DESIREDOUTPUT?
 Any help would be greatly appreciated.  I have
been trying 
to make this work
for days!


Thanks,

Tim










----------------------------------------------------------------
This message was sent using IMP, the Internet
Messaging Program.




--~------------------------------------------------------------------
XSL-List info and archive: 
http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to:
http://lists.mulberrytech.com/xsl-list/
or e-mail:
<mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--





--~------------------------------------------------------------------
XSL-List info and archive: 
http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to:
http://lists.mulberrytech.com/xsl-list/
or e-mail:
<mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--





                
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - Helps protect you from nasty viruses. 
http://promotions.yahoo.com/new_mail

--~------------------------------------------------------------------
XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--