Pipe Functions

What Is A Pipe Function?

A pipe function is a function that is chained in the format expression. Pipe functions are executed sequentially.

Flow Diagram

The flow diagram of expression${path:func1(param1)|func2(param2)} is illustrated on the following figure.
For the expression above, the execution order;
  • evaluates the path
  • executes func1() with the evaluated value
  • executes func2() with the result of the func1()
  • returns the output of func2()

Naming Convention

A transformation's name must be a valid javascript function name. For clarity, the camel case naming convention is suggested.


A transformation function only accepts valid JSON values.
  • number
  • string
  • boolean
  • null
  • JSON object
  • array