Grouping problem

[email protected] · July 25th, 2009, 09:47 AM

Hi,

I'm facing grouping problem in one of my project. I have to make a group of each "ce-def-term" and "ce-def-description". The condition is "ce-def-description" can appear more than one time.

Could you please look into this and suggest.

Thanks,
Anil Yadav

Input xml

Code:

  <ce-def-list id="deflist1">
   <ce-def-term id="defterm1">adverse effects,</ce-def-term>
   <ce-def-description><ce-para id="para26"><ce-cross-ref refid="p9">p. 9</ce-cross-ref></ce-para></ce-def-description>
   <ce-def-description><ce-para id="para26a"><ce-cross-ref refid="p9">p. 99</ce-cross-ref></ce-para></ce-def-description>
   <ce-def-term id="defterm2">allopathic medicine,</ce-def-term>
   <ce-def-description><ce-para id="para27"><ce-cross-ref refid="p2">p. 2</ce-cross-ref></ce-para></ce-def-description>
   <ce-def-term id="defterm3">chemical name,</ce-def-term>
   <ce-def-description><ce-para id="para28"><ce-cross-ref refid="p4">p. 4</ce-cross-ref></ce-para></ce-def-description>
   <ce-def-term id="defterm4">collaborative problems,</ce-def-term>
   <ce-def-description><ce-para id="para29"><ce-cross-ref refid="p10">p. 10</ce-cross-ref></ce-para></ce-def-description>
   <ce-def-description><ce-para id="para29a"><ce-cross-ref refid="p10">p. 100</ce-cross-ref></ce-para>
   </ce-def-description>
  </ce-def-list>

Required output xml

Code:

      <dl>
         <defitem>
            <dt id="defterm1">adverse effects,</dt>
            <dd>p. 9</dd>
            <dd>p. 99</dd>
         </defitem>
         <defitem>
            <dt id="defterm2">allopathic medicine,</dt>
            <dd>p. 2</dd>
         </defitem>
         <defitem>
            <dt id="defterm3">chemical name,</dt>
            <dd>p. 4</dd>
         </defitem>
         <defitem>
            <dt id="defterm4">collaborative problems,</dt>
            <dd>p. 10</dd>
            <dd>p. 100</dd>
         </defitem>
      </dl>

XSLT Code

Code:

<xsl:template match="ce-def-list">
 <dl>
   <xsl:apply-templates/>
 </dl>
</xsl:template>
<xsl:template match="ce-def-list/ce-def-term">
 <defitem>
  <dt id="{@id}">
   <xsl:apply-templates/>
  </dt>
  <xsl:for-each select="following-sibling::*">
    <xsl:if test="local-name()='ce-def-description' and not(name(following-sibling::*[0])='ce-def-term')">
     <dd>
      <xsl:value-of select="."/>
     </dd>
    </xsl:if>
  </xsl:for-each>
 </defitem>
</xsl:template>

samjudson · July 25th, 2009, 10:05 AM

Positional predicates in XPath start at 1, not 0.

The following works, although there is probably a better way:

Code:

<xsl:template match="ce-def-term">
 <defitem>
 <dt id="{@id}">
  <xsl:apply-templates/>
 </dt>
 <xsl:variable name="id" select="@id"/>
 <xsl:for-each select="following-sibling::ce-def-description">
   <xsl:if test="preceding-sibling::ce-def-term[1]/@id=$id">
    <dd>
     <xsl:value-of select="."/>
    </dd>
   </xsl:if>
 </xsl:for-each>
 </defitem>
</xsl:template>

<xsl:template match="ce-def-description"/>

Martin Honnen · July 25th, 2009, 11:41 AM

Do you or can you use XSLT 2.0? Then the following stylesheet should do what you describe:

Code:

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="2.0">
  
  <xsl:output indent="yes"/>
  
  <xsl:template match="ce-def-list">
    <dl>
      <xsl:for-each-group select="*" group-starting-with="ce-def-term">
        <defitem>
          <dt id="{@id}"><xsl:value-of select="."/></dt>
          <xsl:for-each select="current-group() except .">
            <dd><xsl:value-of select="."/></dd>
          </xsl:for-each>
        </defitem>
      </xsl:for-each-group>
    </dl>
  </xsl:template>

</xsl:stylesheet>

[email protected] · July 27th, 2009, 06:19 AM

Hello Sam and Martin,

Thanks a lot for your reply. Now I am getting the desired results.
People like you make the world a better place.

Thanks again,
Anil Yadav