Biztalk Map Logic

Question

Hi,
I have the Biztalk Map logic as shown in figure
Discount Step and Loyalty both are repeatitive node structures
Sample Input Xml is as shown below
<DiscountStepList>
 <DiscountStep>
  <NumberOfTrips>35</NumberOfTrips>
  <Percentage>1113</Percentage>
  </DiscountStep>
 <DiscountStep>
  <NumberOfTrips>5</NumberOfTrips>
  <Percentage>7732</Percentage>
  </DiscountStep>
 <DiscountStep>
  <NumberOfTrips>30</NumberOfTrips>
  <Percentage>8280</Percentage>
  </DiscountStep>
   </DiscountStepList>
the logic to get the o/p will be
For Childe Element MIntrip:
in the first iteration Mintrip=1 and in Secoond iteration Mintrip=Last elememnt Maxtrips+1
For CHild Element Maxtrips:
In the first Iteration Maxtrips="NumberOfTrips" and in Second iteration current element MintripNum  + NumberOfTrips.
The o/p for the above input example will be like
<ns0:Loyalites xmlns:ns0="http://BizTalk_Server_Project7.Schemdfa1">
  <Loaylty>
    <MinTrip>1</MinTrip>
    <MaxTrips>35</MaxTrips>
  </Loaylty>
<Loaylty>
    <MinTrip>36</MinTrip>
    <MaxTrips>41(36+5)</MaxTrips>
  </Loaylty>
<Loaylty>
    <MinTrip>36</MinTrip>
    <MaxTrips>41(36+5)</MaxTrips>
  </Loaylty>
<Loaylty>
    <MinTrip>42</MinTrip>
    <MaxTrips>72(42+30)</MaxTrips>
  </Loaylty>
</ns0:Loyalites>
Is it possible in Biztalk Map using functoids?

Answer 1

Sujith,
You got to buy me a drink :)
You can achive this using XSLT in your map, following XSLT will get the desired result:
<?xml version="1.0" encoding="UTF-16"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:var="http://schemas.microsoft.com/BizTalk/2003/var" exclude-result-prefixes="msxsl var" version="1.0" xmlns:ns0="http://BizTalk_Server_Project7.Schemdfa1" >
<xsl:output omit-xml-declaration="yes" method="xml" version="1.0" />
<xsl:template match="/">
<xsl:apply-templates select="/DiscountStepList" />
</xsl:template>
<xsl:template match="/DiscountStepList">
<ns0:Loyalites>
<xsl:for-each select="DiscountStep">
<xsl:if test="position() =1">
<Loaylty>
<MinTrip>
<xsl:value-of select="position()" />
</MinTrip>
<MaxTrips>
<xsl:value-of select="NumberOfTrips/text()" />
</MaxTrips>
</Loaylty>
<xsl:call-template name="ConstructNextLoayltyNode">
<xsl:with-param name="i" select="2"/>
<xsl:with-param name="limit" select="count(/DiscountStepList/DiscountStep)"/>
<xsl:with-param name="vMaxTrips" select="NumberOfTrips/text()"/>
</xsl:call-template>
</xsl:if>
</xsl:for-each>
</ns0:Loyalites>
</xsl:template>
<xsl:template name="ConstructNextLoayltyNode">
<xsl:param name="i"/>
<xsl:param name="limit"/>
<xsl:param name="vMaxTrips"/>
<xsl:if test="$i &lt;= $limit">
<Loaylty>
<MinTrip>
<xsl:value-of select="$vMaxTrips + 1" />
</MinTrip>
<MaxTrips>
<xsl:value-of select="$vMaxTrips + 1 +/DiscountStepList/DiscountStep[$i]/NumberOfTrips/text() " />
</MaxTrips>
</Loaylty>
<xsl:call-template name="ConstructNextLoayltyNode">
<xsl:with-param name="i" select="$i+1"/>
<xsl:with-param name="limit" select="$limit"/>
<xsl:with-param name="vMaxTrips" select="$vMaxTrips + 1 +/DiscountStepList/DiscountStep[$i]/NumberOfTrips/text()"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
Note: You may have to change the namespace as yours. And also the output sample you have show has repeated node as following which is correct.
<Loaylty>
    <MinTrip>36</MinTrip>
    <MaxTrips>41(36+5)</MaxTrips>
  </Loaylty>
<Loaylty>
    <MinTrip>36</MinTrip>
    <MaxTrips>41(36+5)</MaxTrips>
  </Loaylty>
For your requirement you will get the out as following which your requirement:
<ns0:Loyalites xmlns:ns0="http://BizTalk_Server_Project7.Schemdfa1">
<Loaylty>
<MinTrip>1</MinTrip>
<MaxTrips>35</MaxTrips>
</Loaylty>
<Loaylty>
<MinTrip>36</MinTrip>
<MaxTrips>41</MaxTrips>
</Loaylty>
<Loaylty>
<MinTrip>42</MinTrip>
<MaxTrips>72</MaxTrips>
</Loaylty>
</ns0:Loyalites>
Regards,
M.R.Ashwin Prabhu
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