RE: [xsl] Xpath for a range of elements

Thank you for the suggestions Michael.

Assigning procedure[1] to a variable and using the variable in the
predicate solved the problem. 

-----Original Message-----
From: Michael Kay [mailto:mike(_at_)saxonica(_dot_)com] 
Sent: Wednesday, February 07, 2007 6:37 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: RE: [xsl] Xpath for a range of elements

In this expression

<xsl:apply-templates select="*[. &lt;&lt; procedure[1]]"/> 

you've forgotten that the context changes inside the predicate. Assign
procedure[1] to a variable first, and it should be OK.

Another way of doing this, which also works in 1.0, is:

<prereq>
  <xsl:apply-templates select="procedure/preceding-sibling::*"/>
</prereq>
<xsl:apply-templates select="./procedure"/> <postreq>
  <xsl:apply-templates select="procedure/following-sibling::*"/>
</postreq>

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

-----Original Message-----
From: Anderson, Paul [mailto:Paul(_dot_)Anderson(_at_)compuware(_dot_)com]
Sent: 07 February 2007 22:53
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Xpath for a range of elements

Greetings,

Consider the following skeleton for an XML source file:

<section>
   <title>...</title>
   <para>...</para>
   <code-block>...</code-block>
   <para>...</para>
   <procedure>...</procedure>
   <para>...</para>
   <screen>...</screen>
   <para>...</para>
</section>

I need a Xpath expression that will return all nodes after the <title>

and before the <procedure> (i.e., from section/para[1] through 
section/para[2]). Then I operate on the <procedure>. Then I need 
another Xpath expression that returns all the nodes after the 
procedure up to the end of the <section> (i.e., from section/para[3] 
through section/para[4]. The source documents vary enough that I do 
not know in advance the number of elements or nature of the elements 
before or after the <procedure>. I do, however, know that there is 
always one (and only
one) <procedure>.

In my research, I came across the following thread on this list 
(http://www.biglist.com/lists/xsl-list/archives/200608/msg00043.html).
This thread appeared to hold the answer for me but I can't make it 
work.
I saw that the solution was specific to Xpath 2.0 so I made sure to 
upgrade to Saxon 8 and to update my scripts so that they would work 
(e.g., migrate <xsl:document> to <xsl:result-document>, etc.).

Here is an approximation of the template that matches the section in 
the example above:

<xsl:template match="section">
      <my-proc id="{(_at_)id}">
              <xsl:element name="proc-title">
                      <xsl:value-of select="./title"/>
              </xsl:element>
              <xsl:element name="procbody">
                      <xsl:element name="prereq">
                              <xsl:apply-templates select="*[.
&lt;&lt; procedure[1]]"/>
                      </xsl:element>
                      <xsl:apply-templates select="./procedure"/>
                      <xsl:element name="postreq">
                              <xsl:apply-templates select="*[.
&gt;&gt; procedure[1]]"/>
                      </xsl:element>
              </xsl:element>
      </my-proc>
</xsl:template>

I must be making a simple mistake. Any assistance is appreciated.

Best regards,

Paul Anderson



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