Extended model definitions (.XEM files) provide means for customizing and extending PowerDesigner metaclasses, parameters and generation. Extended model definitions are typed like models in PowerDesigner. You create an extended model definition for a specific type of model and you cannot share these files between heterogeneous models.
When you create a new OOM, or when you reverse into a new OOM, you can select one or several extended model definitions and attach them to the model from the Extended Model Definitions page of the New dialog box:
When you create an OOM in Java or .NET languages, the Extended Model Definitions page in the New dialog box contains the WSDL extended model definition file. It is attached by default to these object languages at creation of the model.
When you attach an extended model definition to an object model, you can choose one of the following options:
|
Option |
Definition |
|---|---|
|
Share |
Current extended model definition constantly refers to the extended model definition stored in the Resource Files\Extended Model Definitions directory. Any changes made to the extended model definition are shared by all linked XEM |
|
Copy |
Current extended model definition is a unique copy of the extended model definition stored in the Resource Files\Extended Model Definitions directory. The current extended model definition is independent of the original one, so modifications made to the extended model definition in the Resource Files\Extended Model Definitions directory are not available to the copied XEM. This one is saved with the OOM and cannot be used without it |
For more information on extended model definitions, see "Extended Model Definitions" in the Resource Files and the Public Metamodel chapter of the Customizing and Extending PowerDesigner manual.