Handling Multi hierarchial Structure using XSLT or Java Mapping in XI

Question

Hello Experts,
I have an requirement wherein i have sender as IDOC and File as Receiver.My target File structure is multi hierarchial with parent level and many child sub level node.
I tried to generate flat structure using graphical mapping by creating an intermediate structure and then mapping it to flat structure but that seems to be very complex for my scenario as there are many sub level at target structure..
Is there any simple way of handlng these????
Thanks

Answer 1

Hi ,
I tried to implement your solution ..I am able to convert my idoc to XMLusing XLST but i have a question that how to convert that XMP to flat file as XI Receiver File adapter understand only 1st level of hierarchy..It doesnt understand nested level of hierarchy which is in my case...
Below is the xslt code which i have written:
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
     <xsl:template match="/">
          <MT_SALES_PO_DATA_INBOUND>
               <xsl:value-of select="WPUBON01/IDOC"/>
               <xsl:for-each select="WPUBON01/IDOC/E1WPB01">
                    <E1WBBB01>
                         <Store_ID>A001</Store_ID>
                         <SYS_INVOICE_NO>
                              <xsl:value-of select="substring(BONNUMMER,'3','15')"/>
                         </SYS_INVOICE_NO>
                         <Cashier_ID>
                              <xsl:value-of select="KASSID"/>
                         </Cashier_ID>
                    </E1WBBB01>
               </xsl:for-each>
               <xsl:for-each select="WPUBON01/IDOC/E1WPB01/E1WPB02">
                    <E1WBB02>
                         <Transaction_Type>
                              <xsl:value-of select="VORGANGART"/>
                         </Transaction_Type>
                         <Article_Description>
                              <xsl:value-of select="QUALARTNR"/>
                         </Article_Description>
                         <ITEM_CODE>
                              <xsl:value-of select="ARTNR"/>
                         </ITEM_CODE>
                         <xsl:for-each select="WPUBON01/IDOC/E1WPB01/E1WPB02/E1WBB03">
                              <E1WBB03>
                                   <Condition_Type>
                                        <xsl:value-of select="KONDITION"/>
                                   </Condition_Type>
                                   <xsl:for-each select="">
                                        <E1WBB04>
                                             <TAX_Code>
                                                  <xsl:value-of select="MWSKZ"/>
                                             </TAX_Code>
                                             <TAX_Amount>
                                                  <xsl:value-of select="MWSBT"/>
                                             </TAX_Amount>
                                        </E1WBB04>
                                   </xsl:for-each>
                              </E1WBB03>
                         </xsl:for-each>
                    </E1WBB02>
               </xsl:for-each>
          </MT_SALES_PO_DATA_INBOUND>
     </xsl:template>
</xsl:stylesheet>
Any idea how do i convert these XML to falt file USing XSLT or File Receiver adapter in XI???
Thanks