Element - centric output

Hi,

I have the following xml document and want element centric output. The input
document is:

<input "bunch of ns declarations...">
  <attrs>
	<s:AttributeType name="CustomerID" />
	<s:AttributeType name="CompanyName"/>
	<s:AttributeType name="ContactName"/>
	<s:AttributeType name="ContactTitle"/>
  </attrs>
  <data>
	<z:row CustomerID="ALFKI" ContactName="Maria Anders"
ContactTitle="Sales Representative" />
	<z:row CustomerID="ANATR" CompanyName="Ana Trujillo Emparedados y
helados" ContactName="Ana Trujillo" ContactTitle="Owner" />
  </data>
</input>

I want to output an element-centric XML from it. I also want to create leaf
elements in the output if the attribute does not exist in the data/row but
does exist as a required name in AttributeType/@name. For example, in the
above XML, I would like the leaf element created for CompanyName for the
first row. How can I acheive this? I already have the attribute to element
translation working. I only need help for generating the leaf element if the
attribute does not exist in the data set. 

Expected output:
<RESPONSES>
	<RESPONSE>
		<CustomerID>ALFKI</CustomerID>
		<CompanyName/>
		<ContactName>Maria Anders</ContactName>
		<ContactTitle>Sales Representative</ContactTitle>
	</RESPONSE>
	<RESPONSE>
		<CustomerID>ANATR</CustomerID>
		<CompanyName>Ana Trujillo Emparedados y
helados</CompanyName>
		<ContactName>Ana Trujillo</ContactName>
		<ContactTitle>Owner</ContactTitle>
	</RESPONSE>
</RESPONSES>

Thanks in advance for your help.

Maulik




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