MarkLogic 12 Product Documentation

fn.data

fn.data(
   arg as Sequence
) as Sequence

Summary

Takes a sequence of items and returns a sequence of atomic values.

The fn:data function returns the sequence of atomic values produced by applying the following rules to each item in $arg:

• If the item is an atomic value, it is returned.
• If the item is a node:
  • If the node does not have a typed value an error is raised [err:FOTY0012].
  • Otherwise, fn:data returns the typed value of the node as defined by the accessor function dm:typed-value in Section 5.15 typed-value Accessor[DM].

Example

var x = fn.head(xdmp.unquote('<hello>hello <goodbye>goodbye</goodbye></hello>')
    ).xpath("/hello");
fn.data(x);

=> hello goodbye