Comparing two variables by using = operator in xsl

saurabh_inblore · February 2nd, 2007, 04:42 AM

Hi,

I have the following xml.

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="destination.xsl"?>
<destination>
    <searchCities>
        <searchCitiy>
            <cityName>London</cityName>
            <cityHotel>AAA</cityHotel>
        </searchCitiy>
        <searchCitiy>
            <cityName>Paris</cityName>
            <cityHotel>BBB</cityHotel>
        </searchCitiy>
        <searchCitiy>
            <cityName>Rome</cityName>
            <cityHotel>BBB</cityHotel>
        </searchCitiy>
    </searchCities>
    <parameters>
        <query>London</query>
    </parameters>
</destination>

The criteria is when value of <query> will be matched with any of <cityName>, that <cityName> will be displayed. When it is not matched different template (<xsl:otherwise> section) would be called.

Now both the values (when it is matched and not matched) are coming at the same time. It should come either one of the values.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="/destination">
        <xsl:apply-templates select="searchCities"/>
    </xsl:template>
    <xsl:template match="searchCities">
        <xsl:variable name="var1">
            <xsl:value-of select="../parameters/query"/>
        </xsl:variable>
        <xsl:for-each select="searchCitiy">
            <xsl:variable name="var2">
                <xsl:value-of select="cityName"/>
            </xsl:variable>
            <xsl:choose>
                <xsl:when test="$var1 = $var2">
                    <xsl:value-of select="cityName"/>
                </xsl:when>
                <xsl:otherwise>
                    <xsl:text> "Call Different Template" </xsl:text>
                </xsl:otherwise>
            </xsl:choose>
        </xsl:for-each>
    </xsl:template>
</xsl:stylesheet>

Is there any concept of premature exit from the for loop in xsl so that after gettng any one of the values (either from match/non-match) for the first time control will come out from the loop.

Thanks in advance,
Saurabh

joefawcett · February 2nd, 2007, 05:22 AM

You can't exit an xsl:for-each prematurely for the simple reason that it's not a loop. In an ideal world all the nodes selected in by the for-each are processed simultaneously, even in the real world there is not guarantee of the actual order. You are fighting XSLT instead of utilising it, try something like:

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:template match="/destination">
        <xsl:apply-templates select="searchCities/searchCity"/>
    </xsl:template>

   <xsl:template match="searchCity">
    <xsl:choose>
      <xsl:when test=" cityName = /destination/parameters/query">Do something</xsl:when>
      <xsl:otherwise>Something else</xsl:otherwise>      
    </xsl:choose>
   <xsl:template>

--

Joe (Microsoft MVP - XML)