xslt - Turning an xsl:for-each in a single XPath expression -


i'd filter collection of elements (menu items). did for-each. looks this:

<xsl:variable name="actualmenus">  <xsl:for-each select="$menus">   <xsl:variable name ="startdate" select="current()/cs:properties/cs:commercepropertyitem[cs:key='startdate']/cs:value"/>   <xsl:variable name ="enddate" select="current()/cs:properties/cs:commercepropertyitem[cs:key='enddate']/cs:value"/>   <xsl:variable name="today" select="translate(substring-before($menudate, 't'), '-', '')"/>   <xsl:variable name="start" select="translate(substring-before($startdate, 't'), '-', '')"/>   <xsl:variable name="end" select="translate(substring-before($enddate, 't'), '-', '')"/>    <xsl:if test="$start &lt;= $today , $today &lt;= $end">     <child>       <xsl:value-of select="current()"/>     </child>   </xsl:if>  </xsl:for-each> </xsl:variable>

and use following code: msxsl:node-set($actualmenus)/child

i try replace code above xpath expression:

<xsl:variable name="actualmenus"       select="$menus[translate(substring-before(current()/cs:properties/cs:commercepropertyitem[cs:key='startdate']/cs:value, 't'), '-', '') &lt;= translate(substring-before($menudate, 't'), '-', '')                  , translate(substring-before($menudate, 't'), '-', '') &lt;= translate(substring-before(current()/cs:properties/cs:commercepropertyitem[cs:key='enddate']/cs:value, 't'), '-', '')]" />

unfortunatelly, doesn't work.

could me find out mistakes in xpath expression ?

the main issue code didn't show context (see comment above, please update question). however, guess issue lies current(). in xsl:for-each, current-function points current node for-each processing. in new select-expression, current-function points whatever context node outside xpath expression. does not point current item in $menus, should use context item expression . (though in case redundant).

i tried code adding seemed possible input document (again, please update question it!). if run following stylesheet, outputs same both xsl:value-of instructions. can run stylesheet against input document, take variable $menus (i wrapped in node-set).

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/xsl/transform"     xmlns:cs="http://whatever/cs"     xmlns:ext="urn:schemas-microsoft-com:xslt"     exclude-result-prefixes="ext cs"     version="1.0">      <xsl:output indent="yes" omit-xml-declaration="yes" />      <xsl:variable name="menudate" select="'2014-08-14t03:44'" />     <xsl:variable name="menus" >         <cs:properties>             <cs:commercepropertyitem>                 <cs:key>startdate</cs:key>                 <cs:value>2014-03-04t12:38</cs:value>             </cs:commercepropertyitem>             <cs:commercepropertyitem>                 <cs:key>enddate</cs:key>                 <cs:value>2014-12-04t12:38</cs:value>             </cs:commercepropertyitem>         </cs:properties>     </xsl:variable>      <xsl:template match="/" >         <xsl:variable name="actualmenus">             <xsl:for-each select="ext:node-set($menus)">                 <xsl:variable name ="startdate" select="current()/cs:properties/cs:commercepropertyitem[cs:key='startdate']/cs:value"/>                 <xsl:variable name ="enddate" select="current()/cs:properties/cs:commercepropertyitem[cs:key='enddate']/cs:value"/>                 <xsl:variable name="today" select="translate(substring-before($menudate, 't'), '-', '')"/>                 <xsl:variable name="start" select="translate(substring-before($startdate, 't'), '-', '')"/>                 <xsl:variable name="end" select="translate(substring-before($enddate, 't'), '-', '')"/>                  <xsl:if test="$start &lt;= $today , $today &lt;= $end">                     <child>                         <xsl:value-of select="current()"/>                     </child>                 </xsl:if>             </xsl:for-each>         </xsl:variable>          <!-- output text value of actual menu -->         <xsl:value-of select="$actualmenus" />         <xsl:text>&#xa;</xsl:text>          <!-- output text value of actual menu using single xpath -->         <xsl:value-of select="ext:node-set($menus)             [                 translate(substring-before(cs:properties/cs:commercepropertyitem[cs:key='startdate']/cs:value, 't'), '-', '')                  &lt;= translate(substring-before($menudate, 't'), '-', '')                  ,                  translate(substring-before($menudate, 't'), '-', '')                  &lt;= translate(substring-before(cs:properties/cs:commercepropertyitem[cs:key='enddate']/cs:value, 't'), '-', '')             ]" />     </xsl:template>  </xsl:stylesheet>

it output:

startdate2014-03-04t12:38enddate2014-12-04t12:38 startdate2014-03-04t12:38enddate2014-12-04t12:38

the difference between expression , mine remove current() expression. which, turns out, redundant in for-each loop, node takes focus default same 1 returned current() (but don't forget remove leading slash).

i not sure why want one-liner xpath. don't think code becomes clearer way, of course, matter of taste.


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