Michael,

Actually you were 100% correct.  When I declared the type on the
'element' parameter I realised that I'm not passing it in this
particular call to the template.  The select that was failing in
print-assertion template was only being called when the result was
false.

Cheers

Jacek

On Wed, May 14, 2008 at 5:45 PM, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> I can't see what's wrong here and I suspect the problem might be elsewhere.
>
>  One bit of advice, though: type errors are much easier to diagnose if you
>  declare the types of all your variables and parameters (using the "as"
>  attribute). This typically results in the error message being reported much
>  closer to the point where your code is actually wrong.
>
>  Michael Kay
>  http://www.saxonica.com/
>
>
>
>  > -----Original Message-----
>  > From: Jacek Radajewski [mailto:jacekrad@xxxxxxxxx]
>  > Sent: 14 May 2008 07:20
>  > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>  > Subject:  so how does sum() work?
>  >
>  > Hi All,
>  >
>  > I'm experiencing a strange (for me) behavior in my XSLT:
>  >
>  > This works:
>  >         <xsl:for-each select="cdm:classification/cdm:app-domain">
>  >           <xsl:call-template name="print-assertion">
>  >             <xsl:with-param
>  > name="business-rule">APP-0010</xsl:with-param>
>  >             <xsl:with-param name="message">A classification
>  > to a Functional Application Domain must include a percentage
>  > of use greater than
>  >               zero. </xsl:with-param>
>  >             <xsl:with-param name="result"
>  > select="number(@cdm:percent-of-use) &gt; 0"/>
>  >           </xsl:call-template>
>  >         </xsl:for-each>
>  >
>  >
>  > But this produces "required item type of first operand of '/'
>  > is node; supplied value has item type xs:string"
>  >         <xsl:call-template name="print-assertion">
>  >           <xsl:with-param
>  > name="business-rule">APP-0011</xsl:with-param>
>  >           <xsl:with-param name="message">An Application's
>  > percentage of use across all non LOB domain classifications
>  > must be equal to 100%. </xsl:with-param>
>  >           <xsl:with-param name="result"
>  > select="sum(cdm:classification/cdm:app-domain/@cdm:percent-of-
>  > use) = 1.0"/>
>  >         </xsl:call-template>
>  >
>  > I'm using saxon 9B inside oxygen 9.2
>  >
>  > Now if I execute
>  > sum(cdm:classification/cdm:app-domain/@cdm:percent-of-use) =
>  > 1.0 within oxygen it correctly evaluates to either true or
>  > false, but produces error when executing within my XSLT ...
>  > but only if the result evaluates to false.  When the sum of
>  > those attributes does equal 1.0 then no error is generated.
>  >
>  >
>  > Any ideas?
>  >
>  > Thanks in advance
>  >
>  > Oh, BTW: I call my print-assertion template maybe 40 times in
>  > my stylesheet and all works well.  Its only the sum() that is
>  > causing me grief.
>  >
>  > Jacek
>  >
>  > ----------- print-assetrion template --------------------
>  > <xsl:template name="print-assertion">
>  >     <xsl:param name="result" select="false()"/>
>  >     <xsl:param name="element"/>
>  >     <xsl:param name="business-rule"/>
>  >     <xsl:param name="message"/>
>  >     <xsl:if test="not($result) or $print-passed-assertions">
>  >       <assertion>
>  >         <asset-id>
>  >           <xsl:value-of
>  > select="$element/ancestor-or-self::node()[ends-with(name(),
>  > '-asset')]/@cdm:uuid"/>
>  >         </asset-id>
>  >         <asset-name>
>  >           <xsl:value-of
>  > select="$element/ancestor-or-self::node()[ends-with(name(),
>  > '-asset')]/cdm:name"/>
>  >         </asset-name>
>  >         <business-rule>
>  >           <xsl:value-of select="$business-rule"/>
>  >         </business-rule>
>  >         <result>
>  >           <xsl:value-of select="$result"/>
>  >         </result>
>  >         <element>
>  >           <xsl:copy-of select="$element"/>
>  >         </element>
>  >         <message>
>  >           <xsl:copy-of select="$message"/>
>  >         </message>
>  >       </assertion>
>  >     </xsl:if>
>  >   </xsl:template>
>  >
>  > --
>  > Jacek Radajewski
>
>



-- 
Jacek Radajewski