MarkLogic 9 Product Documentationfn:error
fn:error( [$error as xs:QName?], [$description as xs:string], [$data as item()*] ) as empty-sequence()
Summary
[1.0 and 1.0-ml only, 0.9-ml has a different signature] Throw the given error. When an error is thrown, the XQuery program execution is stopped. For detailed semantics, see http://www.w3.org/TR/xpath-functions/#func-error.
| Parameters | |
|---|---|
| error |
Error code, as an xs:QName. Note that this parameter does not
exist in 0.9-ml.
|
| description | String description to be printed with the error. |
| data | Parameters to the error message. |
Example
xquery version "1.0-ml";
let $x := xdmp:random(100)
return
(
if ( $x gt 50 )
then ( fn:error(xs:QName("ERROR"), "greater than 50") )
else ( "Less than or equal to 50" ) ,
": no error was thrown" )
=> The error when the random number is greater
than 50.