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[xsl] sequence as function parameter

2011-07-04 09:46:23
Hi List.
I am trying to create a simple function to multiply each item in a
sequence by each other (like a sum()).
My problem is that I am unable to have the parameter treated as a node
sequence (using saxon, so XSL2.0)

I have
<xsl:template name=" multiplie">
        <xsl:param name="serie"/>
        <xsl:param name="result" as="xs:double"/>
        <!--some test output -->
        <xsl:value-of select="$serie"/>-<xsl:value-of
select="$result"/>--
        ###<xsl:value-of select="count($serie)"/>###
        <!-- -->
        <xsl:choose>            
                <xsl:when test="count($serie) gt 1">
                        <!-- make the multiplication between result and
the first item in the serie, then remove it and call again -->
                        <xsl:variable name="comp">
                                <xsl:value-of select="number($serie[1])
* $result"/>
                        </xsl:variable>
                        <xsl:call-template name=" multiplie">
                        <xsl:with-param name="serie"><xsl:copy-of
select="subsequence($serie,2)"/></xsl:with-param>
                        <xsl:with-param name="result"><xsl:value-of
select="$comp"/></xsl:with-param>
                        </xsl:call-template>
                </xsl:when>
                <xsl:otherwise>
                        <xsl:value-of select="number($serie[1]) *
$result"/>
                </xsl:otherwise> 
        </xsl:choose>
</xsl:template>

That I can call (for testing) with
<xsl:variable name="seq" select="(6.8E-06,5.5E-06,7.1E-06,7.3E-06)"/>
<xsl:value-of select=" multiplie($seq)"/>

And the output I get
#############################################
6.8E-06 5.5E-06 7.1E-06 7.3E-06
#############################################
0.0000068 0.0000055 0.0000071 0.0000073-1--
####
NaN
        
#############################################

So, the part where I do a count gets me 1, when I should have 4...
I have tried with
<xsl:param name="serie" as="node()*"/> but I have an error message 
XTTE0790: Required item type of first argument of multiplie() is node();
supplied
  value has item type xs:double

I am a bit out of ideas....
Thank you in advance for any help.

Best regards,
Fabien

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