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Version: 4

Using Custom Methods

A custom method is used to call a function from a custom Java class in a package. It is declared and used globally for all destination elements. 

To use a custom method in a mapping activity, you need to map it to a destination element. This will successfully execute the custom method when you execute the mapping activity in the process flow. 

Prerequisites

  • The package containing the custom java class must be copied in the folder /shared/customClasses/<JAR name>.

Declaring a Custom Method ​

  1. Ensure that the source and destination layouts are loaded and all their elements are listed under their respective nodes.

  2. Click the Add Parameters icon and select Custom Methods to display Create Custom Method window.

  3. To add a Custom Method, enter the details in the fields.

    • Class
    • Method
    • Params

  4. Enter the fully qualified name of the Java class in the Class field and press Tab key to activate the Method field.

  5. Enter the name of the custom method in the Method column and press Tab key to activate the Params field.

  6. Enter the number of arguments taken by Method in the Params column. A custom method can take any number of arguments.

  7. Click Save. This saves the custom method and displays it under Methods node in the Parameters Panel.

To remove a custom method, select the custom method and click the Remove.

Map Custom Method to Destination Element

Once you have created a custom method, you can map it to a destination element. 

  1. Ensure that the source and destination layouts are loaded and all their elements are listed under their respective nodes.

  2. Select a destination element and click Mapping Expression tab from Mapping Functional panel.

  3. Double-click the required custom method under Custom node in the Parameters Panel. The selected method node is displayed in the Mapping Expression Area.

  4. Double-click the source element to define the custom method and map it to destination element.

  5.  This maps the custom method to the target element.

  6. Save the mapping activity and exit the Web Mapper.