[xquery-talk] recurrency
David Carlisle
davidc at nag.co.uk
Wed Mar 11 09:33:16 PST 2009
Your posted input wan't well formed, if I make it so:
<x>
<testXML>
<system>
<node-name>
<name>name1</name>
<addInfo>t11</addInfo>
<node-name>
<name>name2</name>
<addInfo>t22</addInfo>
<node-name>
<addInfo>t33</addInfo>
<name>name3</name>
</node-name>
</node-name>
</node-name>
</system>
</testXML>
<somewhere-it-is-used>
<what-the-name--of-var-is>
<ref>name1</ref>
<ref>name3 'sdsdsd'</ref>
</what-the-name--of-var-is>
<what-the-name--of-var-is>
<ref>name1</ref>
</what-the-name--of-var-is>
</somewhere-it-is-used>
</x>
Then I think this returns what you want for the two references.
declare function local:ref ($node as node(), $s as xs:string*) {
if (empty($s))
then
$node/addInfo
else
local:ref($node/descendant::node-name[name=$s[1]][1],$s[position()!=1])
};
for $v in /x/somewhere-it-is-used/what-the-name--of-var-is
let $s := $v/ref/replace(.,' .*$','')
return
<var ref="{string-join($s,'/')}">
{local:ref(/,$s)}
</var>
as demonstrated by saxon if the above are saved in ref.xml and ref.xq
respectively.
$ saxon9q -s:ref.xml ref.xq
<?xml version="1.0" encoding="UTF-8"?>
<var ref="name1/name3">
<addInfo>t33</addInfo>
</var>
<var ref="name1">
<addInfo>t11</addInfo>
</var>
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