Empty/blank namespace declarations being generated within result-document - xslt

I have written a package for converting XMLs to ePubs. Everything works fine, except some cases, where blank namespace (xmlns="") nodes are being written to the result-documents. Prior to transformation, I prepared temporary variables for holding main-segments(i.e., meta, body etc.) and finally copied the nodes(using xsl:copy-of[#copy-namespaces='no'] instruction) to result-document. I also have used #exclude-result-prefixes='ns_list_sep_by_space' within xsl:transform element and still not able to get desired result.
oXygen IDE shows a message in pop-up saying:
When using xsl:copy-of the new elements will also have namespace nodes copied from the original element node, unless they are excluded by specifying copy-namespaces="no". If this attribute is omitted, or takes the value yes, then all the namespace nodes of the original element are copied to the new element. If it takes the value no, then none of the namespace nodes are copied: however, namespace nodes will still be created in the result tree as required by the namespace fixup process.
Here is some more details of my problem:
Main stylesheet:
main.xsl:main caller
<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl"
xmlns:cylian="local-ns-for-extension-functions"
exclude-result-prefixes="xs xd cylian"
version="2.0">
<xsl:import href="modules/core.xsl"/>
<xsl:variable name="base" select="base-uri()" as="xs:anyURI"/>
<xsl:template match="/">
<xsl:call-template name="procA"/>
</xsl:template>
</xsl:transform>
Main stylesheet:
core.xsl: core processing unit
<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl"
xmlns:cylian="local-ns-for-extension-functions"
exclude-result-prefixes="xs xd cylian"
version="2.0">
<xsl:import href="sub1.xsl"/>
<xsl:import href="sub2.xsl"/>
<!--and more-->
<!-- variable to hold intermediate results for stage1 -->
<xsl:variable name="stage1">
<cylianz>
<xsl:copy-of select="$a" copy-namespaces="no"/>
<xsl:copy-of select="$b" copy-namespaces="no"/>
<!--and more-->
</cylianz>
</xsl:variable>
<!-- variable to hold intermediate results for stage2 -->
<xsl:variable name="stage2">
<cylianz>
<xsl:for-each select="$stage1//cylian">
<xsl:sort select="#pos"/>
<xsl:sequence select="."/>
</xsl:for-each>
</cylianz>
</xsl:variable>
<xsl:template name="procA">
<xsl:for-each select="$stage2//cylian">
<xsl:result-document href="{concat($outdir,#href)}" format="general">
<xsl:call-template name="procB">
<xsl:with-param name="context" select="."/>
<xsl:with-param name="title">
<xsl:value-of select="$book_title"/>
</xsl:with-param>
</xsl:call-template>
</xsl:result-document>
</xsl:for-each>
</xsl:template>
<xsl:template name="procB">
<xsl:param name="context"/>
<xsl:param name="title"/>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<xsl:call-template name="header">
<xsl:with-param name="title" select="$title"/>
</xsl:call-template>
</head>
<body>
<div id="root">
<xsl:apply-templates select="."/>
</div>
</body>
</html>
</xsl:template>
<!--
1/ other rules are shortened for clarity
2/ declaration «xmlns:cylian='local-ns-for-extension-functions'» has to retain, some parts of transformation uses some extension functions from that namespace
-->
</xsl:transform>
and here's the output:
a.html
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta xmlns="" http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title xmlns="">BookTitle</title>
<!--
2012.04.16 - 18:27:36 [XSLT processor: SAXON 9.1.0.5 from Saxonica]
-->
<link xmlns="" href="isbn.css" type="text/css" rel="stylesheet"/>
</head>
<body>
<div id="root">
<div xmlns="" id="a1">
<!--...-->
</div>
</div>
</body>
</html>
I hope it would be easier to understand what's the problem is going on. All suggestions are welcome. Thanks in advance.

Well we need to see your code to be sure but I suspect you have e.g.
<xsl:template match="/">
<foo xmlns="http://example.com/ns">
<xsl:apply-templates/>
</foo>
</xsl:template>
<xsl:template match="whatever">
<bar/>
</xsl:template>
and then you get
<foo xmlns="http://example.com/ns">
<bar xmlns=""/>
</foo>
while you want
<foo xmlns="http://example.com/ns">
<bar/>
</foo>
To fix that make sure you move the default namespace declaration on the xsl:stylesheet element with e.g.
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns="http://example.com/ns">
version="1.0">
<xsl:template match="/">
<foo>
<xsl:apply-templates/>
</foo>
</xsl:template>
<xsl:template match="whatever">
<bar/>
</xsl:template>
</xsl:stylesheet>
that way it applies to all result elements created in different templates.
[edit]
Based on the samples you have provided now I think my suggestion is right, only with several files you need to make sure that all stylesheet modules you have put xmlns="http://www.w3.org/1999/xhtml" on the xsl:stylesheet respectively xsl:transform elements so that all result elements end up in the XHTML namespace.
[second edit]
I think you want
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl"
xmlns:cylian="local-ns-for-extension-functions"
exclude-result-prefixes="xs xd cylian"
version="2.0">
<xsl:import href="sub1.xsl"/>
<xsl:import href="sub2.xsl"/>
<!--and more-->
<!-- variable to hold intermediate results for stage1 -->
<xsl:variable name="stage1" xmlns="">
<cylianz>
<xsl:copy-of select="$a" copy-namespaces="no"/>
<xsl:copy-of select="$b" copy-namespaces="no"/>
<!--and more-->
</cylianz>
</xsl:variable>
<!-- variable to hold intermediate results for stage2 -->
<xsl:variable name="stage2" xmlns="">
<cylianz>
<xsl:for-each select="$stage1//cylian">
<xsl:sort select="#pos"/>
<xsl:sequence select="."/>
</xsl:for-each>
</cylianz>
</xsl:variable>
<xsl:template name="procA">
<xsl:for-each select="$stage2//cylian">
<xsl:result-document href="{concat($outdir,#href)}" format="general">
<xsl:call-template name="procB">
<xsl:with-param name="context" select="."/>
<xsl:with-param name="title">
<xsl:value-of select="$book_title"/>
</xsl:with-param>
</xsl:call-template>
</xsl:result-document>
</xsl:for-each>
</xsl:template>
<xsl:template name="procB">
<xsl:param name="context"/>
<xsl:param name="title"/>
<html >
<head>
<xsl:call-template name="header">
<xsl:with-param name="title" select="$title"/>
</xsl:call-template>
</head>
<body>
<div id="root">
<xsl:apply-templates select="."/>
</div>
</body>
</html>
</xsl:template>
</xsl:transform>
And then if you have any additional modules supposed to produce XHTML elements make sure you put xmlns="http://www.w3.org/1999/xhtml" on the root element of the module or if you need to create elements in other namespaces as well then on any template supposed to output XHTML.

There are two kinds of "unwanted" namespace declarations that might appear in your output: declarations that are unwanted because they are redundant noise (they declare namespace prefixes that aren't used), and declarations that are unwanted because they put the elements in a different namespace from the one intended.
In the first case, XSLT provides features such as exclude-result-prefixes and copy-namespaces='no' to get rid of the noise.
In the second case (which is where I think you are), the namespace declarations are a symptom of the fact that the stylesheet author created the elements in the wrong namespace in the first place, and the solution is to look at the code that created the elements, and fix it. For example you might have written a literal result element <foo> that creates an element in no namespace, when you intended <foo xmlns="something"/> to create it in some other namespace.

Let's have this XML document:
<x:t xmlns:x="some:x">
<a/>
<b/>
</x:t>
Here is code that is probably similar to yours:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/*">
<t xmlns="some:x">
<xsl:copy-of select="*" copy-namespaces="no"/>
</t>
</xsl:template>
</xsl:stylesheet>
and it produces this unwanted result:
<t xmlns="some:x">
<a xmlns=""/>
<b xmlns=""/>
</t>
Why is this result produced?
Because you are using <xsl:copy-of> the nodes are copied "as-is", so elements don't change the namespace they are in. The attribute copy-namespaces="no" only specifies that the namespace nodes belonging to this element will be skipped from copying -- not that the element will change its own namespace.
Solution:
When we want to change the namespace an element is in (in this case from "no namespace" to "some:x", we shouldn't copy this element node.
Instead we must create a new element from this one, and specify the new namespace in which the new element should be:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/*">
<t xmlns="some:x">
<xsl:apply-templates select="*"/>
</t>
</xsl:template>
<xsl:template match="*">
<xsl:element name="{local-name()}" namespace="some:x">
<xsl:apply-templates select="node() | #*"/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>
When this transformation is applied on the same XML document (above), the wanted, correct result is produced:
<t xmlns="some:x">
<a/>
<b/>
</t>

Related

Creating text from character code in XSLT

I am transforming documents from one XML standard to another. One of the requirements is that a numbered list uses alphabetical instead of roman numbering. I can create the unicode from the list position but it seems impossible to insert those into the XML output.
Maybe I am simply not seeing the obvious solution here. In JavaScript I would be using the fromCharCode( ) function but I have not yet found a similar option in XSLT.
I am using XSL 2.0 but could also use 3.0 if needed to make things easier.
I created a simple XML plus XSL to show the problem I need to solve. The actual files are much too big to be sharing here.
Sample XML input document:
<doc>
<p>Some text</p>
<p>Some more text</p>
</doc>
Required output:
<doc>
<list>
<list-item>
<label>A</label>
<p>Some text</p>
</list-item>
<list-item>
<label>B</label>
<p>Some more text</p>
</list-item>
</list>
</doc>
I have tried this:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:output method="xml" encoding="UTF-8"/>
<xsl:template match="/doc">
<xsl:copy>
<list>
<xsl:apply-templates select="p"/>
</list>
</xsl:copy>
</xsl:template>
<xsl:template match="p">
<xsl:variable name="number" as="xs:integer" select="position()"/>
<list-item>
<label>
<xsl:value-of select="concat('&#',$number + 65,';')" disable-output-escaping="yes"/>
</label>
<xsl:copy-of select="."/>
</list-item>
</xsl:template>
</xsl:stylesheet>
I have used disable-output-escaping on other generated items before (e.g. to put angular brackets into the XML output), but it seems that the standard character codes are not being handled in the same way. My output from the above XSL shows up like this:
doc>
<list>
<list-item>
<label>B</label>
<p>Some text</p>
</list-item>
<list-item>
<label>C</label>
<p>Some more text</p>
</list-item>
</list>
</doc>
Is there any way to do this elegantly (i.e. without me having to create a huge xsl:choose to call out every possible integer label value and then explicitly creating the alphabetical labels?
You can use codepoints-to-string() and have it convert the number into the letter.
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:output method="xml" encoding="UTF-8" indent="yes"/>
<xsl:template match="/doc">
<xsl:copy>
<list>
<xsl:apply-templates select="p"/>
</list>
</xsl:copy>
</xsl:template>
<xsl:template match="p">
<list-item>
<label>
<xsl:value-of select="codepoints-to-string(position() + 64)"/>
</label>
<xsl:copy-of select="."/>
</list-item>
</xsl:template>
</xsl:stylesheet>
Or you could use xsl:number with value="position()" and format="A"
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:output method="xml" encoding="UTF-8" indent="yes"/>
<xsl:template match="/doc">
<xsl:copy>
<list>
<xsl:apply-templates select="p"/>
</list>
</xsl:copy>
</xsl:template>
<xsl:template match="p">
<list-item>
<label>
<xsl:number format="A" value="position()"/>
</label>
<xsl:copy-of select="."/>
</list-item>
</xsl:template>
</xsl:stylesheet>
A quick solution for values up to 26 (='Z') would be
<xsl:template match="p">
<xsl:variable name="alphabet" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>
<xsl:variable name="number" as="xs:integer" select="position()"/>
<list-item>
<label><xsl:value-of select="substring($alphabet,$number,1)"/></label>
<xsl:copy-of select="."/>
</list-item>
</xsl:template>
The output is as desired.
This could be extended to 26*26 by using a div and an xsl:if.

Remove namespace declaration from XSLT stylesheet with XSLT

I have an XSLT stylesheet like the following:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:XQHeaderFunc="java:com.sonicsw.xq.service.xform.HeaderExtension"
xmlns:saxon="http://saxon.sf.net/">
<saxon:script language="java" implements-prefix="XQHeaderFunc" src="java:com.sonicsw.xq.service.xform.HeaderExtension" />
<xsl:output indent="yes" omit-xml-declaration="yes"/>
<xsl:template match="/">
<xsl:variable name="processId" select="XQHeaderFunc:getProperty(XQHeaderFunc:new(),'processId',-1)" />
<xsl:value-of select="XQHeaderFunc:setProperty(XQHeaderFunc:new(),'processId',string(#id),-1)"/>
<root>
<xsl:apply-templates />
</root>
</xsl:template>
<!-- Other stuff -->
</xsl:stylesheet>
I want to transform this stylesheet using a second XSLT stylesheet to remove anything that has to do with the XQHeaderFunc and saxon namespaces. Is there a way I can do this?
I have now tried the following, which successfully deals with the elements, but the namespace declaration doesn't seem to want to disappear.
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:XQHeaderFunc="java:com.sonicsw.xq.service.xform.HeaderExtension"
xmlns:saxon="http://saxon.sf.net/"
exclude-result-prefixes="XQHeaderFunc saxon">
<xsl:param name="XQHeaderReplacement" />
<xsl:variable name="apos">'</xsl:variable>
<!-- Copy all nodes -->
<xsl:template match="node()|#*">
<xsl:copy>
<xsl:apply-templates select="node()|#*"/>
</xsl:copy>
</xsl:template>
<!-- Remove saxon script tag -->
<xsl:template match="saxon:script" />
<!-- Remove elements with setProperty calls -->
<xsl:template match="*[starts-with(#select, 'XQHeaderFunc:setProperty')]" />
<!-- Replace getProperty calls with replacement value-->
<xsl:template match="#select[starts-with(., 'XQHeaderFunc:getProperty')]">
<xsl:attribute name="select">
<xsl:value-of select="concat($apos, $XQHeaderReplacement, $apos)"/>
</xsl:attribute>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:XQHeaderFunc="java:com.sonicsw.xq.service.xform.HeaderExtension"
xmlns:saxon="http://saxon.sf.net/">
<xsl:output indent="yes" omit-xml-declaration="yes" />
<xsl:template match="/">
<xsl:variable name="processId" select="''" />
<root>
<xsl:apply-templates />
</root>
</xsl:template>
<!-- Other stuff -->
</xsl:stylesheet>
I would add
exclude-result-prefixes="foo"
onto your
<xsl:stylesheet>
element. Then the namespace declaration for foo will be omitted if possible, i.e. if there no elements or attributes in that namespace to output.
FYI, the reason tnat this line
<xsl:template match="xsl:stylesheet/#xmlns:foo" />`
throws an error is because xmlns:foo in the input document is not an attribute; it's a pseudoattribute. What your match pattern is asking to match is an attribute named foo that is in a namespace corresponding to a namespace prefix xmlns. Since you have not declared a namespace prefix xmlns in your stylesheet, you get the error "prefix xmlns is not defined."
Update:
I see from your posted output (and my own testing) that exclude-result-prefixes hasn't been effective in removing the namespace declaration.
1) First I would ask why it matters. It doesn't change the namespace of anything in your output XSLT. Are you just trying to remove it for aesthetic reasons?
2) Looking at the XSLT 1.0 spec, it appears to me that <xsl:copy> pays no attention to exclude-result-prefixes:
Instantiating the xsl:copy element creates a copy of the current node.
The namespace nodes of the current node are automatically copied as
well...
AFAICT, only literal result elements will omit namespace nodes based on exclude-result-prefixes.
On that basis, I would try replacing <xsl:copy> in your identity template (for elements) with <xsl:element name="{name()}"> or some variant thereof. You would then need a separate identity template for non-element nodes.
I replaced your identity template with the following two templates:
<!-- Copy elements -->
<xsl:template match="*" priority="-1">
<xsl:element name="{name()}">
<xsl:apply-templates select="node()|#*"/>
</xsl:element>
</xsl:template>
<!-- Copy all other nodes -->
<xsl:template match="node()|#*" priority="-2">
<xsl:copy />
</xsl:template>
and that gave what I believe is the desired output, with no extraneous ns declarations:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
<xsl:output indent="yes" omit-xml-declaration="yes" />
<xsl:template match="/">
<xsl:variable name="processId" select="''" />
<root>
<xsl:apply-templates />
</root>
</xsl:template>
<!-- Other stuff -->
</xsl:stylesheet>
(I have adjusted the whitespace for clarity.)

xsl:sort with apply-templates not sorting

I have quite a large XSL document for an assignment that does a number of things. It is nearly complete but I missed a requirement that it has to be sorted and I cannot get it working. Here is a SSCCE of what is happening.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<!-- Root Document -->
<xsl:template match="/">
<html>
<body>
<xsl:apply-templates select="staff">
<xsl:sort select="member/last_name" />
</xsl:apply-templates>
</body>
</html>
</xsl:template>
<xsl:template match="member">
<xsl:value-of select="first_name" /> <xsl:value-of select="last_name" /> <br/>
</xsl:template>
</xsl:stylesheet>
The XML file looks like this
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="sort.xsl"?>
<staff>
<member>
<first_name>Joe</first_name>
<last_name>Blogs</last_name>
</member>
<member>
<first_name>John</first_name>
<last_name>Smith</last_name>
</member>
<member>
<first_name>Steven</first_name>
<last_name>Adams</last_name>
</member>
</staff>
I was expecting the staff members to be listed by last name but they are not getting sorted. Please bear in mind that I am very inexperienced at XSLT.
<xsl:apply-templates select="staff">
<xsl:sort select="member/last_name" />
</xsl:apply-templates>
selects the staff elements and sorts them, but there is only one staff element, so this is a no-op.
Change to
<xsl:apply-templates select="staff/member">
<xsl:sort select="last_name" />
</xsl:apply-templates>
then that selects all the member elements and sorts them.
what is missing is a staff matching template or change the matching template to member like in this one:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<!-- Root Document -->
<xsl:template match="/">
<html>
<body>
<xsl:apply-templates select="staff/member">
<xsl:sort select="last_name" />
</xsl:apply-templates>
</body>
</html>
</xsl:template>
<xsl:template match="member">
<xsl:value-of select="first_name" /> <xsl:value-of select="last_name" /> <br/>
</xsl:template>
</xsl:stylesheet>

xsl:element apply attributes

this question relates to
XSLT to generate html tags specified in XML
where I had an xml docment and used an xsl to generate html tags using
<xsl:element name="{Type}" >
the problem I have is that I want to specify some html attributes in my xml for example
<Page>
<ID>Site</ID>
<Object>
<ID>PostCode</ID>
<Type>div</Type>
<Attributes>
<Attribute name="class">TestStyle</Attribute>
<Attribute name="id">TestDiv</Attribute>
</Attributes>
<Class>display-label</Class>
<Value>PostCode</Value>
</Object>
</Page>
So does any one know how I could populate the xsl:element with the two attributes using xsl?
Thanks
Building from the stylesheet that I posted in the previous question, within the element declaration you can iterate through each of the Attributes/Attribute elements and construct the attributes for the element that you are constructing.
You are "standing" on the Object element node inside that for-loop, so you can then iterate over it's Attributes/Attribute elements like this:
<xsl:for-each select="Attributes/Attribute">
<xsl:attribute name="{#name}"><xsl:value-of select="current()"/></xsl:attribute>
</xsl:for-each>
Applied to your stylesheet:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
>
<xsl:output method="html" indent="yes"/>
<xsl:template match="/">
<html>
<head>
</head>
<body>
<xsl:for-each select="Page/Object">
<xsl:element name="{Type}" >
<xsl:for-each select="Attributes/Attribute">
<xsl:attribute name="{#name}"><xsl:value-of select="current()"/></xsl:attribute>
</xsl:for-each>
<xsl:value-of select="Value"/>
</xsl:element>
</xsl:for-each>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
This is an alternative way to achieve the same output, but in a little more delcarative fashion, using apply-templates instead of for-each.
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
>
<xsl:output method="html" indent="yes"/>
<xsl:template match="/">
<html>
<head>
</head>
<body>
<xsl:apply-templates select="Page/Object" />
</body>
</html>
</xsl:template>
<xsl:template match="Object">
<xsl:element name="{Type}" >
<xsl:apply-templates select="Attributes/Attribute" />
<xsl:apply-templates select="Value" />
</xsl:element>
</xsl:template>
<xsl:template match="Attribute">
<xsl:attribute name="{#name}"><xsl:value-of select="."/></xsl:attribute>
</xsl:template>
</xsl:stylesheet>
You need to fix the Attributes element in your source sample, it's not closed.
You can use xsl:for-each or xsl:apply-templates with select="Attributes/Attribute", to invoke an xsl:attribute element that looks a bit like this:
<xsl:attribute name="{#name}"><xsl:value-of select="text()"/></xsl:attribute>
The thing you need to watch out for is that xsl:attribute must come before anything that adds children to the {Type} element.
<xsl:element name="Attribute">
<xsl:attribute name="class">TestStyle</xsl:attribute>
<xsl:attribute name="id">TestDiv</xsl:attribute>
</xsl:element>

String comparison in XSLT

When I call this template I get the following results.
155IT Matches 155OO
155OO Matches 155OO
155PP
The XML I am processing does have three rows and those are the values, but why is the test returning true for the first two and false for the last one? How should I be doing the string comparison?
<?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="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template name="ProofOfConcept">
<xsl:param name="Lines"/>
<xsl:param name="MainDeliveryCode"/>
<xsl:choose>
<xsl:when test="$Lines">
<xsl:variable name="CurrentDeliveryCode" select="$Lines/DLVYLOCCD"/>
<p>
<xsl:choose>
<xsl:when test=" $MainDeliveryCode = $CurrentDeliveryCode">
<xsl:value-of select="$CurrentDeliveryCode"/> Matches <xsl:value-of select="$MainDeliveryCode"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$Lines"/> Fails <xsl:value-of select="$MainDeliveryCode"/>
</xsl:otherwise>
</xsl:choose>
</p>
<xsl:call-template name="ProofOfConcept">
<xsl:with-param name="Lines" select="$Lines[position() > 1]"/>
<xsl:with-param name="MainDeliveryCode" select="$MainDeliveryCode"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="/">
<html>
<head>
<title></title>
</head>
<body>
<xsl:call-template name="ProofOfConcept">
<xsl:with-param name="Lines" select="data/Lines/LINE"/>
<xsl:with-param name="MainDeliveryCode" select="data/header/DLVYLOCCD"/>
</xsl:call-template>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
Sample data
<?xml version="1.0"
encoding="ISO-8859-1"
standalone="yes"?> <data>
<header><DLVYLOCCD>155OO</DLVYLOCCD>
</header> <Lines>
<LINE><DLVYLOCCD>155IT</DLVYLOCCD></LINE>
<LINE><DLVYLOCCD>155OO</DLVYLOCCD></LINE>
<LINE><DLVYLOCCD>155PP</DLVYLOCCD></LINE>
</Lines> </data>
Thanks for any advice.
Here is a less painful version of your XSLT:
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="data">
<html>
<head>
<title></title>
</head>
<body>
<!-- this selects the matching LINE node(s), or nothing at all -->
<xsl:apply-templates select="
Lines/LINE[DLVYLOCCD = /data/header/DLVYLOCCD]
" />
</body>
</html>
</xsl:template>
<xsl:template match="LINE">
<p>
<!-- for the sake of the example, just output a copy -->
<xsl:copy-of select="." />
</p>
</xsl:template>
</xsl:stylesheet>
gives (formatted result):
<?xml version="1.0" encoding="utf-8"?>
<html>
<head>
<title></title>
</head>
<body>
<p>
<LINE><DLVYLOCCD>155OO</DLVYLOCCD></LINE>
</p>
</body>
</html>
There are a few things wrong with your implementation. Most important, the expression:
<xsl:variable name="CurrentDeliveryCode" select="$Lines/DLVYLOCCD"/>
returns a node-set consisting of all the DLVYLOCCD elements, not just the current one as you seem to assume. Also, you shouldn't be using recursion to iterate. Use <xsl:for-each> instead, in which case you will process the items one at a time.
I figured it out.
I need to change my test to
<xsl:when test="contains($MainDeliveryCode, $CurrentDeliveryCode" >
That solved the problem.
http://www.zvon.org/xxl/XSLTreference/Output/function_contains.html is the documentation for the function.