Class: Parameter

Parameter(name, schema, description, defaultValue)

A class that represents a process parameter.

This is used for two things:

  1. You can create process parameters (placeholders) with new Parameter().
  2. This is passed to functions for the parameters of the sub-process.

For the second case, you can access array elements referred to by the parameter with a simplified notation:

function(data, context) {
    data['B1'] // Accesses the B1 element of the array by label
    data[1] // Accesses the second element of the array by index
}

Those array calls create corresponding array_element nodes in the process. So it's equivalent to this.array_element(data, undefined, 'B1') or this.array_element(data, 1) respectively.

Simple access to numeric labels is not supported. You need to use array_element directly, e.g. this.array_element(data, undefined, 1)

Constructor

new Parameter(name, schema, description, defaultValue)

Creates a new process parameter.

Parameters:
Name Type Description
name string

Name of the parameter.
schema object | string

The schema for the parameter. Can be either an object compliant to JSON Schema or a string with a JSON Schema compliant data type, e.g. string.
description string

A description for the parameter
defaultValue *

An optional default Value for the parameter. If set, make the parameter optional. If not set, the parameter is required. Defaults to undefined.
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