[xsl] Selecting First Direct Sibling

["Wasiq Shaikh" <wasiq911@xxxxxxxxxxx>]

Hello,

I'm having a weird and frustrating problem. I have two XSL files 
(XPath1.0/Xalan2.7J). Both do the same thing. One (mine) is more robust and 
has a bit more processing. The other more simplistic and different 
formatting but with the same goal in mind. That goal is to produce a flat 
list of elements and its attributes from an XML Schema document.

The objective here is to get the comment block directly after an element 
and/or attribute declaration.

Example:

<xsd:element name="blah">
<!-- This is a comment about the element blah -->
  <xsd:attribute name="someAttribute"/>
  <xsd:attribute name="blahAttribute"/>
  <!-- This is a comment about the attribute blahAttribute under element 
blah -->
</xsd:element>

Let's focus on grabbing the comment block under attributes. In the 
simplistic XSL tranformation we have this:

<xs:stylesheet exclude-result-prefixes="xsd"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema";
  xmlns:xs="http://www.w3.org/1999/XSL/Transform";
  version="1.0"
  xmlns:xalan="http://xml.apache.org/xslt";>

  <xs:output indent="yes" xalan:indent-amount="3"/>

<xs:template match="/">
  <xs:element name="Repository">
     <xs:element name="Elements">
        <xs:apply-templates select="/*/*"/>
     </xs:element>
  </xs:element>
</xs:template>

<xs:template match="xsd:element[@name]">
  <xs:element name="{@name}">
     <xs:if test="string(@type)">
        <xs:attribute name="type">
           <xs:value-of select="@type"/>
        </xs:attribute>
     </xs:if>
     <xs:for-each select="*[name()='xsd:simpleType' or 
name()='xsd:complexType']">
        <xs:apply-templates select="*"/>
     </xs:for-each>
  </xs:element>
</xs:template>

<xs:template match="xsd:attribute">
  <xs:element name="attribute">
     <xs:attribute name="name">
        <xs:value-of select="@name"/>
     </xs:attribute>
     <xs:copy-of select="following-sibling::node()[1][self::comment()]"/>
  </xs:element>
</xs:template>

<xs:template match="xsd:sequence|xsd:choice">
  <xs:apply-templates select="*"/>
</xs:template>

<xs:template match="node()|@*"/>

</xs:stylesheet>

This works great. It grabs the comment block directly after an attribute. If 
it doesn't exist it doesn't process anything. The output will be this:

<blah>
  <attribute name="someAttribute"/>
  <attribute name="blahAttribute"/>
  <!-- This is a comment about the attribute blahAttribute under element 
blah -->
</blah>

So, I take this simplistic stylesheet and make it more robust, more 
descriptive, added a few changes to the format, some more descriptive 
attributes, process complexTypes and extensions and so forth ... However, 
the comment grab doesn't work.

------

OHHH ... SOB!!! I figured it out! [40 minutes later] I'll leave the original 
message I was typing so others will understand the problem.

Apparently, adding/removing this line

<xsl:strip-space elements="xsd:complexType"/>

makes the script work/not work. This doesn't make sense to me .. what does 
this have to do with processing comments?

W.S

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