You can't use variables as steps in XPath as a way to select a node.
If you do this:
let $data :=
<data>
<r>
<abc function="w:remove-spaces" module="/datafab/process.xqy"/>
<cdb function="w:spaces" module="/datafab/process1.xqy"/>
</r>
</data>
let $step := "abc"
return $data/r/$step
Then the result will just be the string "abc".
If you want to dynamically select the node "abc" you'd have to do something
like:
let $data :=
<data>
<r>
<abc function="w:remove-spaces" module="/datafab/process.xqy"/>
<cdb function="w:spaces" module="/datafab/process1.xqy"/>
</r>
</data>
let $step := "abc"
return $data/r/*[local-name(.) = $step]
which returns
<abc function="w:remove-spaces" module="/datafab/process.xqy"/>
From: [email protected]
To: [email protected]
Date: Wed, 27 Oct 2010 15:17:33 +0530
Subject: [MarkLogic Dev General] xpath
Hi,
The following query gives the empty string instead of
<abc> element . Also, I need to use $rule.
xquery version "1.0-ml";
import module namespace constant = "http://www.lexisnexis.com/constants";
at "/datafab/constants.xqy";
let $rule := (“abc”,”cdb”)
return
$constant:CONFIG/data/r/$rule/@function
The xml used is :
<data>
<r>
<abc function="w:remove-spaces"
module="/datafab/process.xqy"/>
<cdb function="w: spaces"
module="/datafab/process1.xqy"/>
</r>
</data>
Let me know, if I am missing anything.
Thanks,
Pragya
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