Grouping on Multiple Field - xslt

Question

I am generating XML file from Database as below...
<?xml version = '1.0'?>
<T0019>
<IFTA_ACCOUNT>
<IFTA_CARRIER_ID_NUMBER>705</IFTA_CARRIER_ID_NUMBER>
<IFTA_LICENSE_NUMBER>631227666</IFTA_LICENSE_NUMBER>
<IFTA_BASE_COUNTRY>US</IFTA_BASE_COUNTRY>
<IFTA_BASE_STATE>AL</IFTA_BASE_STATE>
<IFTA_STATUS_CODE>0 </IFTA_STATUS_CODE>
<IFTA_STATUS_DATE>2009-01-01</IFTA_STATUS_DATE>
<IFTA_ISSUE_DATE>2009-01-01</IFTA_ISSUE_DATE>
<IFTA_EXPIRE_DATE>2009-12-01</IFTA_EXPIRE_DATE>
<IFTA_UPDATE_DATE>2008-12-30</IFTA_UPDATE_DATE>
<NAME_TYPE>LG</NAME_TYPE>
<NAME>K D L TRUCKING INC</NAME>
<ADDRESS_TYPE>PH</ADDRESS_TYPE>
<STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1>
<CITY>OHATCHEE</CITY>
<STATE>AL</STATE>
<ZIP_CODE>36271</ZIP_CODE>
<COUNTY>CALHOUN COUNTY</COUNTY>
<COUNTRY>US</COUNTRY>
</IFTA_ACCOUNT>
<IFTA_ACCOUNT>
<IFTA_CARRIER_ID_NUMBER>705</IFTA_CARRIER_ID_NUMBER>
<IFTA_LICENSE_NUMBER>631227666</IFTA_LICENSE_NUMBER>
<IFTA_BASE_COUNTRY>US</IFTA_BASE_COUNTRY>
<IFTA_BASE_STATE>AL</IFTA_BASE_STATE>
<IFTA_STATUS_CODE>0 </IFTA_STATUS_CODE>
<IFTA_STATUS_DATE>2009-01-01</IFTA_STATUS_DATE>
<IFTA_ISSUE_DATE>2009-01-01</IFTA_ISSUE_DATE>
<IFTA_EXPIRE_DATE>2009-12-01</IFTA_EXPIRE_DATE>
<IFTA_UPDATE_DATE>2008-12-30</IFTA_UPDATE_DATE>
<NAME_TYPE>LG</NAME_TYPE>
<NAME>K D L TRUCKING INC</NAME>
<ADDRESS_TYPE>MA</ADDRESS_TYPE>
<STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1>
<CITY>OHATCHEE</CITY>
<STATE>AL</STATE>
<ZIP_CODE>36271</ZIP_CODE>
<COUNTRY>US</COUNTRY>
</IFTA_ACCOUNT>
</T0019>
I have taken first two records from generated XSLT.
With the use of XSLT I have tried lot to group record on basis of
IFTA_LICENSE_NUMBER,IFTA_BASE_COUNTRY,IFTA_BASE_ST ATE,NAME_TYPE,ADDRESS_TYPE but i failed to generated XML like this..
<?xml version="1.0" encoding="UTF-8" ?>
<T0019>
<IFTA_ACCOUNT>
<IFTA_CARRIER_ID_NUMBER>705</IFTA_CARRIER_ID_NUMBER>
<IFTA_BASE_COUNTRY>US</IFTA_BASE_COUNTRY>
<IFTA_BASE_STATE>AL</IFTA_BASE_STATE>
<IFTA_LICENSE_NUMBER>631227666</IFTA_LICENSE_NUMBER>
<IFTA_STATUS_CODE>0</IFTA_STATUS_CODE>
<IFTA_STATUS_DATE>2009-01-01</IFTA_STATUS_DATE>
<IFTA_ISSUE_DATE>2009-01-01</IFTA_ISSUE_DATE>
<IFTA_EXPIRE_DATE>2009-12-01</IFTA_EXPIRE_DATE>
<IFTA_UPDATE_DATE>2008-12-30</IFTA_UPDATE_DATE>
<IFTA_NAME>
<NAME_TYPE>LG</NAME_TYPE>
<NAME>K D L TRUCKING INC</NAME>
<IFTA_ADDRESS>
<ADDRESS_TYPE>PH</ADDRESS_TYPE>
<STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1>
<STREET_LINE_2 />
<CITY>OHATCHEE</CITY>
<STATE>AL</STATE>
<ZIP_CODE>36271</ZIP_CODE>
<COUNTY>CALHOUN COUNTY</COUNTY>
<COUNTRY>US</COUNTRY>
</IFTA_ADDRESS>
<IFTA_ADDRESS>
<ADDRESS_TYPE>MA</ADDRESS_TYPE>
<STREET_LINE_1>200 MARTIN LANE</STREET_LINE_1>
<STREET_LINE_2 />
<CITY>OHATCHEE</CITY>
<STATE>AL</STATE>
<ZIP_CODE>36271</ZIP_CODE>
<COUNTY />
<COUNTRY>US</COUNTRY>
</IFTA_ADDRESS>
</IFTA_NAME>
</IFTA_ACCOUNT>
</T0019>

Answer 1

Your example input records have two different ADDRESS_TYPE values, so if you were grouping by ADDRESS_TYPE, these two would be distinct. And since your output also shows the two distinct values, I assume that you don't really want ADDRESS_TYPE in your list of grouping keys. Is that the real problem?
The XSLT spec gives two strategies for composite keys. When I tried the 'concat' strategy with your data, and with your list of keys minus ADDRESS_TYPE, it grouped these two records together.

Answer 2

Thanks , I have applied following XSLT to solve this Problem.
<xsl:stylesheet
version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="T0019">
<xsl:copy>
<xsl:for-each-group select="IFTA_ACCOUNT" group-by="IFTA_LICENSE_NUMBER">
<xsl:for-each-group select="current-group()" group-by="IFTA_BASE_COUNTRY">
<xsl:for-each-group select="current-group()" group-by="IFTA_BASE_STATE">
<IFTA_ACCOUNT>
<xsl:apply-templates select="IFTA_CARRIER_ID_NUMBER|IFTA_BASE_COUNTRY|IFTA_BASE_STATE|IFTA_LICENSE_NUMBER|IFTA_STATUS_CODE|IFTA_STATUS_DATE|IFTA_ISSUE_DATE|IFTA_EXPIRE_DATE|IFTA_UPDATE_DATE"/>
<xsl:for-each-group select="current-group()" group-by="NAME_TYPE">
<IFTA_NAME>
<xsl:apply-templates select="NAME_TYPE|NAME"/>
<xsl:for-each select="current-group()">
<IFTA_ADDRESS>
<xsl:apply-templates select="ADDRESS_TYPE|STREET_LINE_1|STREET_LINE_2|CITY|STATE|ZIP_CODE|COUNTY|COUNTRY"/>
</IFTA_ADDRESS>
</xsl:for-each>
</IFTA_NAME>
</xsl:for-each-group>
</IFTA_ACCOUNT>
</xsl:for-each-group>
</xsl:for-each-group>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
<xsl:template match="IFTA_CARRIER_ID_NUMBER">
<IFTA_CARRIER_ID_NUMBER>
<xsl:value-of select="."/>
</IFTA_CARRIER_ID_NUMBER>
</xsl:template>
<xsl:template match="IFTA_LICENSE_NUMBER">
<IFTA_LICENSE_NUMBER>
<xsl:value-of select="."/>
</IFTA_LICENSE_NUMBER>
</xsl:template>
<xsl:template match="IFTA_BASE_COUNTRY">
<IFTA_BASE_COUNTRY>
<xsl:value-of select="."/>
</IFTA_BASE_COUNTRY>
</xsl:template>
<xsl:template match="IFTA_BASE_STATE">
<IFTA_BASE_STATE>
<xsl:value-of select="."/>
</IFTA_BASE_STATE>
</xsl:template>
<xsl:template match="IFTA_STATUS_CODE">
<IFTA_STATUS_CODE>
<xsl:value-of select="."/>
</IFTA_STATUS_CODE>
</xsl:template>
<xsl:template match="IFTA_STATUS_DATE">
<IFTA_STATUS_DATE>
<xsl:value-of select="."/>
</IFTA_STATUS_DATE>
</xsl:template>
<xsl:template match="IFTA_ISSUE_DATE">
<IFTA_ISSUE_DATE>
<xsl:value-of select="."/>
</IFTA_ISSUE_DATE>
</xsl:template>
<xsl:template match="IFTA_EXPIRE_DATE">
<IFTA_STATUS_DATE>
<xsl:value-of select="."/>
</IFTA_STATUS_DATE>
</xsl:template>
<xsl:template match="IFTA_UPDATE_DATE">
<IFTA_ISSUE_DATE>
<xsl:value-of select="."/>
</IFTA_ISSUE_DATE>
</xsl:template>
<xsl:template match="NAME_TYPE">
<NAME_TYPE>
<xsl:value-of select="."/>
</NAME_TYPE>
</xsl:template>
<xsl:template match="NAME">
<NAME_TYPE>
<xsl:value-of select="."/>
</NAME_TYPE>
</xsl:template>
<xsl:template match="ADDRESS_TYPE">
<ADDRESS_TYPE>
<xsl:value-of select="."/>
</ADDRESS_TYPE>
</xsl:template>
<xsl:template match="STREET_LINE_1">
<STREET_LINE_1>
<xsl:value-of select="."/>
</STREET_LINE_1>
</xsl:template>
<xsl:template match="STREET_LINE_2">
<STREET_LINE_2>
<xsl:value-of select="."/>
</STREET_LINE_2>
</xsl:template>
<xsl:template match="CITY">
<CITY>
<xsl:value-of select="."/>
</CITY>
</xsl:template>
<xsl:template match="STATE">
<STATE>
<xsl:value-of select="."/>
</STATE>
</xsl:template>
<xsl:template match="ZIP_CODE">
<ZIP_CODE>
<xsl:value-of select="."/>
</ZIP_CODE>
</xsl:template>
<xsl:template match="COUNTY">
<COUNTY>
<xsl:value-of select="."/>
</COUNTY>
</xsl:template>
<xsl:template match="COUNTRY">
<COUNTRY>
<xsl:value-of select="."/>
</COUNTRY>
</xsl:template>
</xsl:stylesheet>
Thanks to all for your wonderful help.