RE: [xsl] 1 + 1 = 11

[Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>]

At 01:31 PM 4/18/2006, it was written:
> I'm trying to remember, but isn't "+" used for concatenation?  So, yes,
> 1+1=11.

Nope, it isn't, not in XSLT (or more precisely, XPath).

I think the problem is the <xsl:otherwise>0</xsl:otherwise>. My guess 
is that the test is being run on a table with two rows: the first has 
an index of '1' assigned, so '1' is appended. The next (position()=2) 
hits the otherwise so '0' is appended, resulting in the string '10'. 
XPath coerces this string to 10, add 1 to it and get 11.

If you had a table with three rows, you'd get 101, four rows would 
get 1001, etc.

If this is correct, just change the <xsl:choose> to an <xsl:if> to 
get rid of the otherwise clause. It shouldn't be there anyway.

Cheers,
Wendell

> > -----Original Message-----
> > From: Eric White [mailto:eric.white@xxxxxxxxxxx]
> > Sent: Tuesday, April 18, 2006 1:19 PM
> > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> > Subject: [xsl] 1 + 1 = 11
> >
> > What am I missing?  I define a parameter, get the highest
> > existing row number and I want to add a value to it -- so I
> > can add the next table row with a new index.  I get the index
> > value correctly, but when I add one (1) to it, I get  the
> > string "11", rather than the number 2. Note that I
> > specifically set the param to a number via the number() function.
> > I've also tried using the number() function inside the select
> > attribute of the apply-templates element, trying to coerce
> > the result, but to no avail.
> >
> > <xsl:template match="ntpServerTable">
> >    <xsl:param name="rowindex">
> >       <xsl:for-each select="ntpServerTableRow">
> >          <xsl:sort select="ntpServerTableRowIndex" data-type="number"
> > order="descending" />
> >         <xsl:choose>
> >            <xsl:when test="position() = 1">
> >              <xsl:value-of select="number(ntpServerTableRowIndex)"/>
> >           </xsl:when>
> >           <xsl:otherwise>0</xsl:otherwise>
> >        </xsl:choose>
> >      </xsl:for-each>
> >    </xsl:param>
> >    <xsl:apply-templates select="ntpServerTableRow"/>
> >    <ntpServerTableRowIndex><xsl:value-of
> > select="$rowindex+1"/></ntpServerTableRowIndex>


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
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Suite 207                                          Phone: 301/315-9631
Rockville, MD  20850                                 Fax: 301/315-8285
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