You can perform the following tasks to manage user-defined functions:
The following table describes the user-defined function management tasks and lists where you can perform each task:
Editing User-Defined Functions
You can edit a user-defined function to change the function properties. The changes propagate to all user-defined functions and expressions that use the function.
Use the following rules and guidelines when you edit a user-defined function:
Deleting User-Defined Functions
When you delete a user-defined function, the Repository Service deletes the function from other user-defined functions and expressions that use it. As a result, these user-defined functions and expressions may be invalid.
Mappings and workflows that use the user-defined function or an expression with the user-defined function may also be invalid. Validate the mappings or workflows.
Exporting User-Defined Functions
You can export a user-defined function to XML. You can then import it into other repositories or repository folders.
If you export a mapping or workflow with a user-defined function, the PowerCenter Client exports the user-defined function.
Validating User-Defined Functions
You can validate a user-defined function from the following areas:
When you validate a user-defined function, the PowerCenter Client does not validate other user-defined functions and expressions that use the function. If a user-defined function is invalid, any user-defined function and expression that uses the function is also invalid. Similarly, mappings and workflows that use the user-defined function are invalid.
Copying and Deploying User-Defined Functions
When you copy an object that contains a user-defined function, the Copy Wizard also copies the user-defined function. When you deploy a static deployment group that contains user-defined functions, the Copy Wizard also copies the functions. When you deploy a dynamic deployment group that contains user-defined functions, the Copy Wizard does not deploy the functions that are not included in an expression.
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