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Hi, I have an XML: <?xml version="1.0" encoding="UTF-8"?> <first> <second> <a val="4" key="one">b</a> <a val="2" key="two">b</a> </second> <second> <a val="3" key="one">c</a> </second> </first> I need to group together the nodes which have the same key and then I need to add the attribute "val" in all such cases. So, The output I need is: <op> <one> <val>7</val> </one> <two> <val>2</val> </two> </op> How do I go about doing this? I am using Xalan and XSLT 1.0. I have used the Meunichian method to group the nodes with same keys together. But I don't know how to proceed from there. I tried using the sum() function but it won't work for me on account that even if I run a for-each loop over the set of nodes with the same key, it just prints out the value of "val" for each a element. I think I need to be in the parent element for this to work. Thanks, Harsh.
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