Package com.api.jsonata4java.expressions.functions

Class MapFunction

  • public class MapFunction
extends FunctionBase
    From http://docs.jsonata.org/higher-order-functions#map Signature: $map(array, function) Returns an array containing the results of applying the function parameter to each value in the array parameter. The function that is supplied as the second parameter must have the following signature: function(value [, index [, array]]) Each value in the input array is passed in as the first parameter in the supplied function. The index (position) of that value in the input array is passed in as the second parameter, if specified. The whole input array is passed in as the third parameter, if specified. Examples $map([1..5], $string) results in ["1", "2", "3", "4", "5"] With user-defined (lambda) function: $map(Email.address, function($v, $i, $a) { 'Item ' & ($i+1) & ' of ' & $count($a) & ': ' & $v }) evaluates to: [ "Item 1 of 4: fred.smith@my-work.com", "Item 2 of 4: fsmith@my-work.com", "Item 3 of 4: freddy@my-social.com", "Item 4 of 4: frederic.smith@very-serious.com" ]