Help: Select every node except these nodes

arcuza · May 23rd, 2005, 07:40 AM

I have a XML-structure like this:

<DOCUMENT>
<USER>Name</USER>
<HTMLDATA>
 
 Hi there!

 <OBJECT>
 <TYPE>Image</TYPE>
 <SOURCE>http://www.hi.com/image.jpg</SOURCE>
 </OBJECT>
 This is transformed by XSL
 
</HTMLDATA>
</DOCUMENT>

Tags with CAPITAL LETTERS are my XML data tags, and tags with small letters are my HTML output data:

I want to copy everything between the HTMLDATA tags and insert it into my HTML-page.

Like this:

<html>
<head>
<title>XSL Transforms</title>
</head>
<body>
<xsl:copy-of select="//HTMLDATA">
</body>
</html>

But I do not want to copy the <OBJECT>-tag because it belongs to my XML data and should be informative for the transform.

I want the output to be:

<html>
<head>
<title>XSL Transforms</title>
</head>
<body>
 
 Hi there!

 <img src="http://www.hi.com/image.jpg" />
 This is transformed by XSL
 
</body>
</html>

How do I write my <xsl:copy-of> tag to get this output?

Maybe like this:

<xsl:copy-of select="//HTMLDATA/*[but not the OBJECT tag, the OBJECT tag should be transformed with some XSL code futher down]">

mhkay · May 23rd, 2005, 08:26 AM

xsl:copy-of will only do an exact copy. To copy most elements but not all, write an identity template

<xsl:template match="*">
 <xsl:copy>
 <xsl:copy-of select="*"/>
 <xsl:apply-templates/>
 </xsl:copy>
</xsl:template>

and then override it:

<xsl:template match="OBJECT"/>

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

arcuza · May 23rd, 2005, 08:32 AM

How do I navigate to the position of HTMLDATA, before I do the * selection?

EDIT: I mean, don't I have to do "cd /DOCUMENT/HTMLDATA" before I do "ls *" analogously?

mhkay · May 23rd, 2005, 08:49 AM

How you get to somewhere depends entirely on where you are starting from.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

arcuza · May 24th, 2005, 03:51 AM

Dear Michael,

I have done the implementation just as you suggested, but I get a strange result.

I first get a copy of the data between the HTMLDATA tags. Then, I get the data without the tags.

Like this:

 
 Hi there!

 <OBJECT>
 <TYPE>Image</TYPE>
 <SOURCE>http://www.hi.com/image.jpg</SOURCE>
 </OBJECT>
 This is transformed by XSL
 
Hi thereImageThis is transformed by XSL

The OBJECT-tag is overridden, however.

arcuza · May 24th, 2005, 04:46 AM

Instead, I am now using:

<xsl:copy-of select="/DOCUMENT/HTMLDATA/*[name() != 'OBJECT']"/>

That doesn't work, but if I replace with this:

<xsl:copy-of select="/DOCUMENT/HTMLDATA/*[name() != 'i']"/>

The data between the -tags disappears.

Why is that so?

mhkay · May 24th, 2005, 05:49 AM

You haven't understood the relationship between apply-templates and match patterns. Match patterns are conditions that a node must satisfy, they don't say how to reach the node. You say how to reach the node in the select attribute of xsl:apply-templates. Match patterns never need a "//" at the start for that reason.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

arcuza · May 24th, 2005, 06:44 AM

I don't get anywhere with this:

<xsl:template match="/DOCUMENT">
 <html>
 <body>
 <xsl:apply-templates select="HTMLDATA"/>
 </body>
 </html>
</xsl:template>

<xsl:template match="HTMLDATA">
 <xsl:apply-templates select="*"/>
</xsl:template>

<xsl:template match="*">
 <xsl:copy>
 <xsl:copy-of select="*"/>
 <xsl:apply-templates/>
 </xsl:copy>
</xsl:template>

<xsl:template match="OBJECT"/>

I feel like there's a missing link somewhere in my code. I have your book XSLT - Programmer's Reference, where do I find info about this in particular?

barcher · May 25th, 2005, 08:07 AM

Try this:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:template match="/DOCUMENT">
 <html>
 <body>
 <xsl:apply-templates select="HTMLDATA" />
 </body>
 </html>
 </xsl:template>

 <xsl:template match="HTMLDATA">
 <xsl:apply-templates />
 </xsl:template>

 <xsl:template match="*">
 <xsl:copy>
 <xsl:apply-templates />
 </xsl:copy>
 </xsl:template>

 <xsl:template match="OBJECT[TYPE='Image']">
 <img src="{SOURCE}" />
 </xsl:template>
</xsl:stylesheet>

Regards
Bryan