Applying user-defined functions

The following steps show you how to insert or apply a previously created ESQL or mapping user-defined function using the Compose Mapping Expression editor.

  1. From the Message Flow Mapping editor Overview, select the Target Value that you want to edit. A small box appears at the end of the row.
  2. Click the box to open the Compose Mapping Expression editor. (Alternatively, from the Outline view, right-click the value that you want to edit and click Edit Mapping to open the Compose Mapping Expression editor.
  3. In the top view, highlight the value to which you want to apply the function, or the position where you want to add the function.
  4. Select the type of function that you want to use from the drop-down list.
  5. Select the function by clicking the fast-forward arrow to the right of this box.
  6. Drag and drop the selected function onto the value or position selected in step 3. If you drop the function onto a selected value, that value is placed into the selected function at the appropriate position. If you drop the function into a selected the position, the function is placed there ready for you to add the necessary values into that function.
Related concepts
Mappings
Mapping types
Message mapping
Related tasks
Applying built-in functions
Inserting operators
Including additional fields in a mapping
Related reference
Mappings