replace xml value with sequentail numbers - xslt

Question

Hi I have been trying to replace values in a certain tag with sequential numbers, I used position function, but it did not work.
Input xml:
<?xml version="1.0" encoding="UTF-8"?>
<Envelope>
<Header>
<User id="swarnai" />
<Request-Id id="592149819" />
<Type name="Request" />
<Application-Source version="8.1.1.10" name="Siebel" />
<Application-Destination version="1.2.2" name="EVA" />
<Outgo-Timestamp time="11:40:59" date="2015-08-04" />
<DealerCode>82536</DealerCode>
<Market>00000</Market>
</Header>
<Content>
<ClaimContext>
<ClaimControl>
<ClaimEntryFlag>3</ClaimEntryFlag>
<ClaimSaveFlag>1</ClaimSaveFlag>
</ClaimControl>
<Claim>
<DealerClaimNumber>1091871</DealerClaimNumber>
<WHC>WDD</WHC>
<FIN>2120026L020301</FIN>
<RegistrationNumber>JH07E2786</RegistrationNumber>
<FirstRegistrationDate>2012-11-29</FirstRegistrationDate>
<Mileage>14317</Mileage>
<MileageIndicator>0</MileageIndicator>
<RepairDate>2013-12-03</RepairDate>
<RegularlyMaintained>true</RegularlyMaintained>
<NoFirstRegDateInd>false</NoFirstRegDateInd>
<ClaimCurrencyId>EUR</ClaimCurrencyId>
<Taxi>false</Taxi>
<DamagePosition>
<DamageSeqNumber>1</DamageSeqNumber>
<WarrantyType>0</WarrantyType>
<DamageCode>0121504</DamageCode>
<OperationPosition>
<SeqNumber>1</SeqNumber>
<Opcode>02770501</Opcode>
<WorkingUnits>18</WorkingUnits>
<MainOperationCode>true</MainOperationCode>
<OperationText>OPERATIONS: FITTING FOR COOLANT CONNECTION TO CYLINDER</OperationText>
<PriceGroup>01</PriceGroup>
</OperationPosition>
</DamagePosition>
<DamagePosition>
<DamageSeqNumber>1</DamageSeqNumber>
<WarrantyType>0</WarrantyType>
<DamageCode>0121504</DamageCode>
<PartPosition>
<SeqNumber>1</SeqNumber>
<Quantity>10</Quantity>
<PartNumber>A6512001056</PartNumber>
<DamageCausingPart>true</DamageCausingPart>
<RetailPriceAmount>1499</RetailPriceAmount>
<Express>false</Express>
</PartPosition>
</DamagePosition>
<DamagePosition>
<DamageSeqNumber>1</DamageSeqNumber>
<WarrantyType>0</WarrantyType>
<DamageCode>0121504</DamageCode>
<PartPosition>
<SeqNumber>1</SeqNumber>
<Quantity>20</Quantity>
<PartNumber>A0009890825 10</PartNumber>
<DamageCausingPart>false</DamageCausingPart>
<RetailPriceAmount>1319</RetailPriceAmount>
<Express>false</Express>
</PartPosition>
</DamagePosition>
</Claim>
</ClaimContext>
</Content>
</Envelope>
In this xml within PartPosition/SeqNumber tag I want to replace or generate sequence of numbers in SeqNumber tag.
I tried below xslt:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" encoding="utf-8" indent="no"/>
<xsl:key name="Damage_Group" match="/Envelope/Content/ClaimContext/Claim/DamagePosition" use="DamageCode" />
<xsl:template match="Claim">
<xsl:copy>
<xsl:apply-templates select="#*|node()" />
<xsl:for-each select="DamagePosition[count(. | key('Damage_Group', DamageCode)[1]) = 1]">
<xsl:sort select="DamageCode" />
<DamagePosition>
<DamageSeqNumber>
<xsl:value-of select="position()" />
</DamageSeqNumber>
<DamageCode>
<xsl:value-of select="DamageCode" />
</DamageCode>
<WarrantyType><xsl:value-of select="WarrantyType" /></WarrantyType>
<xsl:for-each select="key('Damage_Group', DamageCode)">
<xsl:copy-of select="current()/PartPosition"/>
<xsl:copy-of select="current()/OperationPosition"/>
<xsl:copy-of select="current()/SubletPosition"/>
</xsl:for-each>
</DamagePosition>
</xsl:for-each>
</xsl:copy>
</xsl:template>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()" />
</xsl:copy>
</xsl:template>
<xsl:template match="DamagePosition">
</xsl:template>
</xsl:stylesheet>
but it is not giving me the desired output as below.
<?xml version="1.0" encoding="UTF-8"?>
<Envelope>
<Header>
<User id="swarnai" />
<Request-Id id="592149819" />
<Type name="Request" />
<Application-Source version="8.1.1.10" name="Siebel" />
<Application-Destination version="1.2.2" name="EVA" />
<Outgo-Timestamp time="12:15:47" date="2015-08-04" />
<DealerCode>82536</DealerCode>
<Market>00000</Market>
</Header>
<Content>
<ClaimContext>
<ClaimControl>
<ClaimEntryFlag>3</ClaimEntryFlag>
<ClaimSaveFlag>1</ClaimSaveFlag>
</ClaimControl>
<Claim>
<DealerClaimNumber>1091871</DealerClaimNumber>
<WHC>WDD</WHC>
<FIN>2120026L020301</FIN>
<RegistrationNumber>JH07E2786</RegistrationNumber>
<FirstRegistrationDate>2012-11-29</FirstRegistrationDate>
<Mileage>14317</Mileage>
<MileageIndicator>0</MileageIndicator>
<RepairDate>2013-12-03</RepairDate>
<RegularlyMaintained>true</RegularlyMaintained>
<NoFirstRegDateInd>false</NoFirstRegDateInd>
<ClaimCurrencyId>EUR</ClaimCurrencyId>
<Taxi>false</Taxi>
<DamagePosition>
<DamageSeqNumber>1</DamageSeqNumber>
<DamageCode>0121504</DamageCode>
<WarrantyType>0</WarrantyType>
<OperationPosition>
<SeqNumber>1</SeqNumber>
<Opcode>02770501</Opcode>
<WorkingUnits>18</WorkingUnits>
<MainOperationCode>true</MainOperationCode>
<OperationText>OPERATIONS: FITTING FOR COOLANT CONNECTION TO CYLINDER</OperationText>
<PriceGroup>01</PriceGroup>
</OperationPosition>
<PartPosition>
<SeqNumber>1</SeqNumber>
<Quantity>10</Quantity>
<PartNumber>A6512001056</PartNumber>
<DamageCausingPart>true</DamageCausingPart>
<RetailPriceAmount>1499</RetailPriceAmount>
<Express>false</Express>
</PartPosition>
<PartPosition>
<SeqNumber>2</SeqNumber>
<Quantity>20</Quantity>
<PartNumber>A0009890825 10</PartNumber>
<DamageCausingPart>false</DamageCausingPart>
<RetailPriceAmount>1319</RetailPriceAmount>
<Express>false</Express>
</PartPosition>
</DamagePosition>
</Claim>
</ClaimContext>
</Content>
</Envelope>
Any help is much appreciated.
Thanks

Answer 1

Firstly, instead of doing this, which copies the elements without further changes to it (or its descendants)
<xsl:copy-of select="current()/PartPosition"/>
<xsl:copy-of select="current()/OperationPosition"/>
<xsl:copy-of select="current()/SubletPosition"/>
You should you template matching instead, to allow you to write a template later on to change the sequence number
<xsl:apply-templates select="PartPosition"/>
<xsl:apply-templates select="OperationPosition"/>
<xsl:apply-templates select="SubletPosition"/>
Now, what you could do, is write a template that matches the various Sequence numbers and counts the preceding siblings for the same DamageCode. Something like this
<xsl:template match="PartPosition/SeqNumber">
<SeqNumber>
<xsl:variable name="DamageCode" select="../../DamageCode" />
<xsl:value-of select="count(../../preceding-sibling::*[PartPosition][DamageCode = $DamageCode]) + 1" />
</SeqNumber>
</xsl:template>
You could repeat the template for OperationPosition and SubletPosition too, although this would be quite repetitive. Alternatively, have a single generic template to match all three:
<xsl:template match="SeqNumber">
<SeqNumber>
<xsl:variable name="DamageCode" select="../../DamageCode" />
<xsl:variable name="Parent" select="name(..)" />
<xsl:value-of select="count(../../preceding-sibling::*[*[name() = $Parent]][DamageCode = $DamageCode]) + 1" />
</SeqNumber>
</xsl:template>
However, this is not necessarily that efficient, as it is not utilizing the key and so would have to check back through all preceding siblings to find a match.
Another solution would be to pass the position of the current DamagePosition in a parameter, and then use that in checking the key.
Try this XSLT
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="xml" encoding="utf-8" indent="yes"/>
<xsl:key name="Damage_Group"
match="/Envelope/Content/ClaimContext/Claim/DamagePosition"
use="DamageCode"/>
<xsl:template match="Claim">
<xsl:copy>
<xsl:apply-templates select="#*|node()"/>
<xsl:for-each select="DamagePosition[count(. | key('Damage_Group', DamageCode)[1]) = 1]">
<xsl:sort select="DamageCode"/>
<DamagePosition>
<DamageSeqNumber>
<xsl:value-of select="position()"/>
</DamageSeqNumber>
<DamageCode>
<xsl:value-of select="DamageCode"/>
</DamageCode>
<WarrantyType>
<xsl:value-of select="WarrantyType"/>
</WarrantyType>
<xsl:for-each select="key('Damage_Group', DamageCode)">
<xsl:apply-templates select="PartPosition">
<xsl:with-param name="Position" select="position()" />
</xsl:apply-templates>
<xsl:apply-templates select="OperationPosition">
<xsl:with-param name="Position" select="position()" />
</xsl:apply-templates>
<xsl:apply-templates select="SubletPosition">
<xsl:with-param name="Position" select="position()" />
</xsl:apply-templates>
</xsl:for-each>
</DamagePosition>
</xsl:for-each>
</xsl:copy>
</xsl:template>
<xsl:template match="DamagePosition/*">
<xsl:param name="Position" />
<xsl:copy>
<xsl:apply-templates select="#*|node()">
<xsl:with-param name="Position" select="$Position" />
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
<xsl:template match="SeqNumber">
<xsl:param name="Position" />
<SeqNumber>
<xsl:value-of select="count(key('Damage_Group', ../../DamageCode)[position() <= $Position][*[name() = name(current()/..)]])" />
</SeqNumber>
</xsl:template>
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()" />
</xsl:copy>
</xsl:template>
<xsl:template match="DamagePosition" />
</xsl:stylesheet>