MarkLogic 9 Product Documentationfn:string
fn:string( [$arg as item()?] ) as xs:string?
Summary
Returns the value of $arg represented as an xs:string. If no
argument is supplied, this function returns the string value of the
context item (.).
| Parameters | |
|---|---|
| arg | The item to be rendered as a string. |
Usage Notes
If no argument is supplied and the context item is undefined, an error is raised.If $arg is the empty sequence, the zero-length string is returned.
If $arg is a node, the function returns the string-value of the node, as obtained using the dm:string-value accessor.
If $arg is an atomic value, then the function returns the same string as is returned by the expression:$arg cast as xs:string
Example
let $x := <hello>hello<goodbye>goodbye</goodbye></hello> return fn:string($x) => hellogoodbye