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JavaScript fn.docAvailable

MarkLogic 12 EA 1 Product Documentation
fn:doc-available

fn:doc-available(
   $uri as xs:string?
) as xs:boolean

Summary

If fn:doc($uri) returns a document node, this function returns true. If $uri is not a valid xs:anyURI, an error is raised [err:FODC0005]. Otherwise, this function returns false.

If this function returns true, then calling fn:doc($uri) within the same execution scope must return a document node.

Parameters
uri The URI of the document to check.

Example

fn:doc-available("/mydocs/doc.xml")

=> true is /mydocs/doc.xml is a document in the database
   otherwise false

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