Using Functions as Called Functions

A function that is added into another function is referred to as a called function. This function may or may not include variables with published inputs and/or outputs.

Creating called functions

To create a called function:

  1. Open a new function.
  2. Create the requested user-defined variables. For each variable, define the publishing direction:
    • In – Used as an input for the current function.
    • Out – Used as an output of the current function.
    • InOut – Can be used as either an input or output of the current function.
  3. Edit the function sequence by adding the requested tools, variables, assets, etc.
  4. Save the function.
  5. You can now use this function as a called function in other functions.

Using called functions

To call a function:

  1. Open the function into which to insert the called function (new or existing function).
  2. From the Workspace explorer, drag and drop your function into the requested location on the function canvas. The called function is represented on your canvas as a single or triple step (while using Transformation or Criteria).
  3. Double-click the Function step to open the + panel.

  4. Click the IO tab to modify the function's inputs and outputs.

  5. Enter values into the inputs and set the variables to which the outputs will be assigned.
    You can call a function from within the same function, thus creating a recursive call. Functions can be nested to create a hierarchy of an unlimited number of functions within other functions.