I am a little surprised that xdmp:uri-content-type and xdmp:uri-format are not supported as transformation functions in MarkLogic TDE (template-driven extraction) template.
[javascript] TDE-EVALFAILED: tde.nodeDataExtract(...) -- Eval for $doc-format='xdmp:uri-content-type($doc-uri)' returns XDMP-UNDFUN: (err:XPST0017) Undefined function xdmp:uri-content-type()
Indeed the two are not listed as acceptable functions in the documentation: https://docs.marklogic.com/10.0/guide/app-dev/TDE#id_99178
Just want to confirm if it is the case and also I am curious about the rationale.
These functions require access to mimetype settings inside MarkLogic configuration, which is probably the reason why they are unavailable. To get something similar to format based on a node or document at hand, use xdmp:node-kind instead. Content-type will need to be calculated upfront unfortunately, during ingest.
HTH!