cts:element-value-match does not works from scheduled tasks - xquery

Question

I have written this code in the scheduled task XQuery -
xquery version "1.0-ml";
declare namespace grp = "http://marklogic.com/xdmp/group";
declare namespace c = 'http://iddn.icis.com/ns/core';
import module namespace admin = "http://marklogic.com/xdmp/admin" at "/MarkLogic/admin.xqy";
declare variable $task-file-path := "/var/tmp/Projects/update-malformed-ids-task.xqy";
declare variable $string-starting-with-new-line-pattern := "
*";
declare variable $string-starting-with-space-pattern := " *";
declare variable $LIVE-ASSET-COLLECTION := "live-collection";
declare variable $batch-size := 100;
declare function local:is-migration-needed()
{
(
fn:exists(cts:element-value-match(xs:QName("c:id"), $string-starting-with-space-pattern, (), cts:collection-query($LIVE-ASSET-COLLECTION))) or
fn:exists(cts:element-value-match(xs:QName("c:id"), $string-starting-with-new-line-pattern, (), cts:collection-query($LIVE-ASSET-COLLECTION)))
)
};
declare function local:migrate()
{
if(local:is-migration-needed())
then (: do task here :)
else ()
}
local:migrate()
But this code is not working in scheduled task. The error which is logged in error logs says XDMP-ARG: cts:element-value-match(xs:QName("c:id"), " *", (), cts:collection-query("live-collection")) -- arg2 is invalid
I tried the same query on QConsole. It is working fine. I also tried using xdmp:spawn on the same file which also worked fine.
I also tried firing the simple cts:element-value-match without any pattern or wildcards. Looks like cts:element-value-match is not supported in scheduled tasks.
Is there something else need to be done to run this code from a scheduled task?

Answer 1

It seems like cts:element-value-match doesn't work in the scheduled tasks of MarkLogic. I did the desired task using cts:element-word-query instead.
Now the updated code in the task file, which worked for me, looks like -
xquery version "1.0-ml";
declare namespace grp = "http://marklogic.com/xdmp/group";
declare namespace c = 'http://iddn.icis.com/ns/core';
import module namespace admin = "http://marklogic.com/xdmp/admin" at "/MarkLogic/admin.xqy";
declare variable $task-file-path := "/var/tmp/Projects/update-malformed-ids-task.xqy";
declare variable $string-pattern-for-new-line-and-space as xs:string* := (" *","
*");
declare variable $LIVE-ASSET-COLLECTION := "live-collection";
declare function local:is-migration-needed()
{
fn:count(cts:search(
fn:collection($LIVE-ASSET-COLLECTION),
cts:element-word-query(
xs:QName("c:id"),
$string-pattern-for-new-line-and-space,
("whitespace-sensitive", "wildcarded")
)
))>0
};
declare function local:migrate()
{
if(local:is-migration-needed())
then (: do task here :)
else ()
}
local:migrate()