(newbie) EXTRACTING COMMA-SEPARATED VALUES IN XSL

If your XSL processor allows embedded script it might have a Perl binding and then you can write all sorts of things in Perl.

Recursivitity is allowed. You define a NAMED template (it has NO match attribute) which you call with the input string as a parameter. After processing the "before comma" case, you call the named template if it contains another comma otherwise you process the after case.

I have to go for lunch now, so I'll leave you with that advice. Back either later or Monday.

HTH

< snip > I undestand recursiveness is not possible in XSL < snip >

@alsvartr, This is not true - you can utilize xsl:call-template tag to achieve recursive behaviour.  As I see BigRat has suggested you to use embeded script. It is generally bad idea, because you loose the cross-platform advantage that pure XML/XSL gives you.

As BigRat sai use named template - this is what you can call using xsl:call-template.

For example see: http://xml.web.cern.ch/XML/www.dpawson.co.uk/xsl/sect2/recursion.html

Comment to NODE:

Node, what version of XML is your solution for? I'm using XSLerator 2.5.7, and I get an error message "keyword xsl:call-template may not contain xsl:param". I tried using <xsl:with-param> tag instead of <xsl:param> and will not work. What could be the cause?

Yes, sorry, it was a copy and paste mistake, you should use <xsl:with-param> instead of <xsl:param> at BOTH places, I mean in the first call to the template, but also in the template itself, when it calls itself. If it doesn't work, let me know what error you get, because the <xsl:with-param> is allowed in <xsl:call-template> according to w3c recomandations, I don't know if xselerator support it.

Comment for NODE:

I'm getting an error message: "Expression expected - ->,<-".

**This is how I'm calling the template:

<xsl:for-each select = "excepcion_sp[string-length(@codigo)>0]">
  <xsl:call-template name="exceptionscode">
    <xsl:with-param name="string" select="@codigo"/>
    <xsl:with-param name="message" select="mensaje"/>
  </xsl:call-template>
</xsl:for-each>

**This is the actual template:

<xsl:template name="exceptionscode">
  <xsl:param name="separator" select=","/>
  <xsl:param name="string"/>
  <xsl:param name="message"/>
  <xsl:choose>
    <xsl:when test="contains($string,$separator)">
      <xsl:variable name="current" select="substring-before($string, $separator)" />
      <xsl:variable name="remaining" select = "substring-after($string, $separator)"/>
      <xsl:text>case&#x20;<xsl:value-of select="$current" />:&#x20;</xsl:text>
      <xsl:call-template name="exceptionscode">
        <xsl:with-param name="string" select="$remaining" />
      </xsl:call-template>
    </xsl:when>
    <xsl:otherwise>
      <xsl:text>case&#x20;<xsl:value-of select="$string" />:&#x20;throw&#x20;new&#x20;RemoteException(_msgKernel.getMessage(<xsl:text>"</xsl:text><xsl:value-of select = "$message"/><xsl:text>"</xsl:text>,&#x20;lang));<xsl:text>&#xA;break;</xsl:text></xsl:text>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

**And this is a snippet from my XML

<excepvalida variable = "_cStmt.getInt(15)">
  <excepcion_sp codigo = "4">
  <mensaje>com.ixe.isis.mw.autotransfer.outoforder</mensaje>
  </excepcion_sp>
  <excepcion_sp codigo = "5, 6, 7">
  <mensaje>com.ixe.isis.mw.autotransfer.invalidtransferdate</mensaje>
  </excepcion_sp>
</excepvalida>

I guess it comes from
<xsl:param name="separator" select=","/>
Try
<xsl:param name="separator" select="','"/>
That should work, or at least the error should change.

Good luck !

MANY THANKS TO NODE FOR A GOOD JOB!

This solution works like this:
- When calling a named template, parameters should be enclosed within a with-param tag.
- Template parameters are announced using the param tag
- If the template does not work, try removing the text tags, for some processors will not accept value-of tags inside these.