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  4. About Transform Message Component
  5. Workflow: Create a Mapping

  6. To Graphically Construct a Mapping

To Graphically Construct a Mapping (Anypoint Studio)

Through the graphical UI of the Transform Message component you can do the tasks below. When doing each, the necessary lines are added to the DataWeave code to describe the action.

Map a Field

Drag an element on the input structure over to another on the output structure, this casts a line that joins them.

A diagram that illustrates the data flow from an input containing address and related details to an output with city, country, and email

Map a Structure

Drag a high-level structure that contains lists of elements or inner fields onto another in the output. This creates a shaded region covering all the mapped structure. Fields that have identical names in these structures are automatically mapped too.

A diagram illustrating the flow of data from an input containing address details to an output displaying city, country, and email information

Set a Fixed Value or Function

  1. Double click on a field in the output tree. This adds a function icon The letters f and x with a blue dot next to it next to it.

  2. A new line is added to the DataWeave code that assigns a default null value to the field. This line is highlighted. Change its value to anything you want.

    Code showing a text value of null

    You can add:

    • A fixed string value by using " ".

    • A reference to an input field.

    • A DataWeave statement that includes functions.

See Also