Update tag values against other xml

[sergio]

Hi guys,

i kindly ask you an help to find a solution to this problem. 

I've two xml like this:

base:

<person>

<name>A</name>

<surname>B</surname>

<address/>

... many other tags...

</person>

update:

<person>

<name/>

<surname>D</surname>

<address>C</address>

</person>

The result xml should have the same tags of "base" xml where their value has been updated with the value in the related not-empty tag in "update" xml, like the following:

result XML

<person>

<name>A</name>

<surname>D</surname>

<address>C</address>

... many other tags...

</person>

Could please suggest a smart way to do this with a XSLT (1.0 or 2.0 ver) transformation?

What if the base and update XML are in the same XML tree? For examle:

<root>

<base>

 see the above XML

</base>

<update>

 see the above XML

</update>

</root>

Many thanks!

Bye

Sergio