xslt - for-each 中 'hits' 的计数

Question

我有下面的代码。在 if-sentenses 返回 true 并执行代码块 4 次后，我会让 for-each 停止运行。因为我不知道代码块何时执行了 4 次，所以我不能使用我的第一个想法 position()。

任何帮助将不胜感激。

<xsl:for-each select="$itm//item[@template='news item']">
    <xsl:sort select="sc:fld('start date',.)" data-type="text" order="descending"/>
    <xsl:if test="sc:formatdate($date,'yyyyMMddHHmm') &gt; sc:formatdate(sc:fld('start date',.),'yyyyMMddHHmm')">
        <xsl:if test="sc:formatdate($date,'yyyyMMddHHmm') &lt; sc:formatdate(sc:fld('end date',.),'yyyyMMddHHmm')">
    <!--EXECUTE A CODE BLOCK-->
        </xsl:if>
    </xsl:if>
</xsl:for-each>

Answer 1

<!-- convenience variables -->
<xsl:variable name="dtFormat" select="'yyyyMMddHHmm'" />
<xsl:variable name="theDate" select="sc:formatdate($date, $dtFormat)" />

<!-- don't loop over nodes testing a condition on each one separately, 
     just select the interesting ones directly -->
<xsl:variable name="MatchingFields" select="
  $itm//item[@template='news item'][
    sc:formatdate(sc:fld('start date', .), $dtFormat) &lt; $theDate
    and
    sc:formatdate(sc:fld('end date', .), $dtFormat) &gt; $theDate
  ]
" />

<!-- now do something with the nodes -->
<xsl:for-each select="$MatchingFields">
  <xsl:sort select="sc:fld('start date',.)" data-type="text" order="descending"/>
  <!--EXECUTE A CODE BLOCK-->
</xsl:for-each>

<!-- you can also count them (this is your "hit counter") -->
<xsl:value-of select="count($MatchingFields)" />