Xquery - what is wrong here

Question

I would like the node replace to act on the $person variable. What do I need to change?

The following code should change the name of the people in the sequence to X.

declare function local:ChangeName($person)
{
  xdmp:node-replace($person//Name/text, text { "X" } )

  <p>{$person}</p>
};

let $b := <Person>
      <Name>B</Name>
      <IsAnnoying>No</IsAnnoying>
  </Person>

let $j := <Person>
      <Name>J</Name>
      <IsAnnoying>No</IsAnnoying>
  </Person>

let $people := ($b, $j)

return $people ! local:ChangeName(.)

Answer 1

xdmp:node-replace() only operates on persisted documents, not on in-memory documents.

Your local:ChangeName() function could construct the Person and Name elements but copying the IsAnnoying element, as in:

declare function local:ChangeName($person)
{
  <p>
  <Person>
  <Name>X</Name>
  {$person//IsAnnoying}
  </Person>
  </p>
};

For more complex transformations, consider a recursive typeswitch or XSLT transform.