fn:apply with an updating function

Dear BaseX people, I encounter a problem with standard function fn:apply(), applied to an updating function. declare %updating function f:apply-dbPut($db as xs:string, $input as item(), $path as xs:string) { let $fn := function-lookup(QName('http://basex.org/modules/db', 'put'), 3) let $args := [$db, $input, $path] return apply($fn, $args)}; Message:[XUST0002] Function body must be updating. Therer seems to be a checking looking for an updating function, and apply() cannot, of course, be classified as such. Do I make a mistake, or is it a limitation, or a bug? Thank you for checking, kind regards -Hans-Jürgen

Hi Hans-Jürgen,

That’s a limitation of the official function. You can use our custom update:apply function as a resort [1]. Hope this helps, Christian [1] https://docs.basex.org/wiki/Update_Module#update:apply

Phantastic - it could not be easier, just insert "update:" before "apply("! That'sBaseX. Cordial thanks! Hans-Jürgen Am Donnerstag, 28. Juli 2022 um 12:17:23 MESZ hat Christian Grün <christian.gruen at gmail.com> Folgendes geschrieben: Hi Hans-Jürgen,

That’s a limitation of the official function. You can use our custom update:apply function as a resort [1]. Hope this helps, Christian [1] https://docs.basex.org/wiki/Update_Module#update:apply