Re: [xsl] Counting Nodes Based on Conditional Statements

[Geert Josten <Geert.Josten@xxxxxxxxxxx>]

Hi Michael,

>  <xsl:template match="/">
>    <div class="line"></div>
>
>    <xsl:for-each select="catalog/category/topic/book">
>      <xsl:sort select="title" data-type="text" order="ascending" />
>      <xsl:if test="$status = 'All' or ($status = 'Purchased' and @status 
> = 'Purchased')">
>        <xsl:if test="$category = 'All' or ($category = ../../@name and 
> ($topic = ../@name or $topic = 'All'))">
>          <div><xsl:value-of select="title" /></div>
>          <div class="line"></div>
>        </xsl:if>
>      </xsl:if>
>    </xsl:for-each>
>  </xsl:template>
>
> </xsl:stylesheet>

You could _first_ determine the list catching it in a variable and _then_ get the count and loop 
over them.

<xsl:variable
    name="books"
    select="catalog/category/topic/book
                [$status = 'All'
                  or ($status = 'Purchased' and @status = 'Purchased')]
                [$category = 'All'
                  or ($category = ../../@name and ($topic = ../@name or $topic = 'All'))]" />

(sorry for the silly indentation)

<xsl:choose>
  <xsl:when test="count($books) = 0">
    <!-- sorry no books -->
  </xsl:when>
  <xsl:otherwise>
    <!-- count($books) shown! -->
    <xsl:for-each select="$books">
      <!-- presentation of books -->
    </xsl:for-each>
  </xsl:otherwise>
</xsl:choose>

Grtz,
Geert