Extensions

Extensions (*.xem files) provide means for customizing and extending PowerDesigner metaclasses, parameters and generation. For example, you could attach extension files to a Java OOM to help you in working with a particular IDE and an O/R mapping framework. You can use extensions to define additional properties for existing object types or entirely new kinds of objects, to modify the PowerDesigner interface (reorganizing and adding property sheet tabs, palette tools and menu items), and to define additional generation targets and options.

PowerDesigner provides a number of predefined extension files and you can also create your own.

• Attaching Extensions to a Model
  You can attach an extension file (.xem) to your model when you create it by clicking the Select Extensions button on the New Model dialog. You can attach an extension file to an existing model from the List of Extensions.
• Creating an Extension
  You can create an extension in a separate file for sharing by multiple models or one which is embedded in a single model.
• Exporting an Extension for Sharing
  If you export an XEM created in a model, it becomes available in the List of Extensions, and can be shared with other models. When you export an XEM, the original remains embedded in the model.
• Extension Properties
  All extension filess have the same basic category structure.
• Extending Code Generation with Extensions
  The extension generation parameters influence the content of the generation dialog box. The following table shows how you can customize the generation from the Resource Editor.
• Creating Separate Generation Targets with Extensions
  Extensions can be used to create new generation targets.