XSLT ... I can'f find a (working) find minimum value in XML and set variable

Posted by Bob on Stack Overflow See other posts from Stack Overflow or by Bob
Published on 2012-09-07T19:13:33Z Indexed on 2012/09/08 3:38 UTC
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I've search for hours and not found an example that allows for the very first position to be the lowest. I'm getting 'False' instead of the value returned ....

EDIT: Oddly enough if I run a 2nd instance as MAX_Landed with ascending it returns a value just fine. If I switch the order in the XSLT the first instance will return 'False' and the 2nd will work. Hope I'm making sense .....

Example XML which I can't get formatted to show correctly and in a hurry so you get the gist I hope:

<?xml version="1.0"?>
<GetLowestOfferListingsForASINResponse xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01">
  <GetLowestOfferListingsForASINResult ASIN="0470067802" status="Success">
    <AllOfferListingsConsidered>false</AllOfferListingsConsidered>
    <Product xmlns="http://mws.amazonservices.com/schema/Products/2011-10-01" xmlns:ns2="http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd">
      <LowestOfferListings>
        <LowestOfferListing>
          <Qualifiers>
            <ItemCondition>Used</ItemCondition>
            <ItemSubcondition>Good</ItemSubcondition>
          </Qualifiers>
          <Price>
            <LandedPrice>
              <Amount>15.71</Amount>
            </LandedPrice>
          </Price>
        </LowestOfferListing>
        <LowestOfferListing>
          <Qualifiers>
            <ItemCondition>Used</ItemCondition>
            <ItemSubcondition>Good</ItemSubcondition>
          </Qualifiers>
          <Price>
            <LandedPrice>
              <Amount>16.71</Amount>
            </LandedPrice>
          </Price>
        </LowestOfferListing>
        <LowestOfferListing>
          <Qualifiers>
            <ItemCondition>Used</ItemCondition>
            <ItemSubcondition>Good</ItemSubcondition>
          </Qualifiers>
          <Price>
            <LandedPrice>
              <Amount>18.71</Amount>
            </LandedPrice>
          </Price>
        </LowestOfferListing>
      </LowestOfferListings>
    </Product>
  </GetLowestOfferListingsForASINResult>
</GetLowestOfferListingsForASINResponse>

Example XSLT :

 <?xml version="1.0" encoding="utf-8"?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" xmlns:amz="http://mws.amazonservices.com/schema/Products/2011-10-01" exclude-result-prefixes="amz">
 <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
 <xsl:template match="/">
  <xsl:variable name="MIN_Landed">
   <xsl:for-each select="//Amount">
    <xsl:sort data-type="number" order="ascending"/>
    <xsl:if test="position()=1"><xsl:value-of select="."/></xsl:if>
   </xsl:for-each>
  </xsl:variable>
 <FMPXMLRESULT xmlns="http://www.filemaker.com/fmpxmlresult">
   <ERRORCODE>0</ERRORCODE>
   <PRODUCT BUILD="" NAME="" VERSION=""/>
   <DATABASE DATEFORMAT="M/d/yyyy" LAYOUT="" NAME="" RECORDS="1" TIMEFORMAT="h:mm:ss a"/>
   <METADATA>
      <FIELD EMPTYOK="YES" MAXREPEAT="1" NAME="DATA" TYPE="TEXT"/>
      <FIELD EMPTYOK="YES" MAXREPEAT="1" NAME="Min_Landed" TYPE="TEXT"/>
   </METADATA>
   <RESULTSET>
      <xsl:attribute name="FOUND">1</xsl:attribute>
      <xsl:for-each select="amz:GetLowestOfferListingsForASINResponse/amz:GetLowestOfferListingsForASINResult/amz:Product/amz:LowestOfferListings/amz:LowestOfferListing">
           <ROW>
                <xsl:attribute name="MODID">0</xsl:attribute>
                <xsl:attribute name="RECORDID">1</xsl:attribute>
                <COL>
                     <DATA>
                          <xsl:value-of select="amz:Qualifiers/amz:ItemCondition"/>
                     </DATA>
                </COL>
                <COL>
                     <DATA>
                          <xsl:value-of select="$MIN_Landed"/>
                     </DATA>
                </COL>
           </ROW>
      </xsl:for-each>
    </RESULTSET>
   </FMPXMLRESULT>
  </xsl:template>
</xsl:stylesheet>

HELP PLEASE!

I really didn't want to post so much Amazon code but here it is stripped down to a bare bones response

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