search and replace kind of operations with XML

For a given XML input, I would need to perform 'Search
and Replace' operation on Element/Attribute Tag names
and values. The resultant output is a transformed XML.
Since I would like to change both Tags and Values,
what is the best way to accomplish this? XSLT or
Xpath/XQuery or combination of both?

 OR are there any special apis in XmlBeans to
accomplish this?



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