string_to_date (string date, string format) ⇒ date
Transforms a string which is the of the format, format, to a date. E.g.
string_to_date("25-10-2015 14:00:24", "dd-MM-yyyy hh:mm:ss")
Transforming to objects
ZPE 1.6.6 made a change to the way dates are represented at stored, so instead of using a Java date, ZPE 1.6.6 and later use the date object.