Read XML tags dynamically

Hi

I have to read the XML dynamically , please see the input and expected output

Input:

String inputPayload = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"

                                                + "<records xsi:type=\"Opportunity\">"

                                                + "<Id>ABCD</Id>"

                                                + "<Amount>1000.0</Amount>" + "</records>";

Output

"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"

< data>

  <Object name> Opportunity  </Object name>

   <records>

     <FiledName>ID</FiledName>

     <FiledValue>ABCD</FiledValue>

   <records>

   <records>

     <FiledName>Amount</FiledName>

     <FiledValue>1000.0</FiledValue>

   <records>

< /data>

Please note that  the tags Opportunity, ID,Amount etc are dynamic.

Can you please tell how to read this using DOM/SAX or any other method?