xml - 通过xquery更改元素的值

Question

<category>
     <catid>1</catid>
     <cattext> sport </cattext>
</category>

我想更改元素 <cattext> 的文本通过使用 xquery 进入另一个像“艺术”而不是运动

Answer 1

declare namespace local = "http://example.org";  
declare function local:copy-replace($element as element()) {  
  if ($element/self::cattext)
  then <cattext>art</cattext>
  else element {node-name($element)}  
               {$element/@*, 
                for $child in $element/node()  
                return if ($child instance of element())  
                       then local:copy-replace($child)  
                       else $child  
               }  
};  
local:copy-replace(/*)

输出:

<?xml version="1.0" encoding="UTF-8"?>
<category>
     <catid>1</catid>
     <cattext>art</cattext>
</category>