How to implement “if else if else” condition in XSLT

Question

Is it possible to implement \"if else, if else\" in xsl? for example I have data:

    
        MAR111
          


        

Answer 1

Do you mean something like:

<xsl:choose>
  <xsl:when test="name() = 'MAR111'">
    ... do something ...
  </xsl:when>
  <xsl:otherwise>
    ... do something as fallback ...
  </xsl:otherwise>
</xsl:choose>

BR Markus

Answer 2

This stylesheet:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:key name="kLineByName" match="line" use="name"/>
    <xsl:template match="line[count(.|key('kLineByName',name)[1]) = 1]">
        <document>
            <xsl:element name="{substring(name,1,3)}">
                <xsl:copy-of select="name|key('kLineByName',name)/value"/>
            </xsl:element>
        </document>
    </xsl:template>
    <xsl:template match="text()"/>
</xsl:stylesheet>

Output:

<document>
    <MAR>
        <name>MAR111</name>
        <value>1</value>
        <value>3</value>
    </MAR>
</document>
<document>
    <MEA>
        <name>MEA111</name>
        <value>1</value>
        <value>4</value>
    </MEA>
</document>
<document>
    <MPR>
        <name>MPR111</name>
        <value>1</value>
        <value>2</value>
    </MPR>
</document>

Answer 3

The best way is to use separate templates.

<xsl:template match="/document/line/name='MEA111'">
       <xsl:apply-templates mode="MEA" select="/document"/>
</xsl:template>

<xsl:template match="/document/line/name='MPR111'">
       <xsl:apply-templates mode="MPR" select="/document"/>
</xsl:template>

<xsl:template match="/document/line/name='MAR111'">
       <xsl:apply-templates mode="MAR" select="/document"/>
</xsl:template>

Even less lines and this is more maintainable.

Answer 4

Yes, we can achieve things using <xsl:choose><xsl:when> but if, else if, condition is also supported in @select attribute of different xslt construct for example :

<xsl:value-of select="if (@geography = 'North America') then 
                 'Domestic car'
                else if (@geography = 'Europe') then 
                  'Import from Europe'
                else if (@geography = 'Asia') then 
                  &quot;It's from Asia&quot;
                (: If it's anything else :)
                else 
                   'We don''t know!'"/>

Answer 5

No, choose when is the xsl way of saying if else. No better way

Answer 6

if you want to implement a catch-all fall through (e.g. equivalent to "else"), you should use otherwise