Defining the functions
Simple mappings can copy data from a source field and place it in the target field. However, sometimes more complex transformations are required. All mappings have an add function icon which is used to define functions.
By default, when you register for a Cast Iron® Express® account, this function is disabled. To use this additional function, click Add-ons and select the Mapping Functions package. For more information, see Adding function to your Express account.

- String
- Mathematical
- Boolean
- Date
- Utility
Procedure
Example
This example shows a simple String Length function.
Also, the Result column on the right is updated to reflect the result of the function instead of a simple copy.
Some functions are more configurable and can accept multiple input fields. For example, the following screen capture shows a Concatenate function.
Additional source fields can be connected to the anchor point on the left side of the function, as shown in the following screen capture.
The Concatenate function also has
configuration options which can be displayed by clicking the Edit
icon . You
can change the order of the inputs and specify configuration options
for the Concatenate function such as prefix, defaultDelimiter,
and postfix.
Click Apply to save your changes. The Target Results column on the right is updated.