Generating EJBs

The EJB generation process allows you to generate EJB source code that is compliant with J2EE 1.3 (EJB 2.0). The code generator (Java, EJB, XML, etc...) is based on templates and macros. You can customize the generated code by editing the Java object language from Tools > Resources > Object Languages.

The following picture illustrates the overall EJB development process.

The following picture focuses on the PowerDesigner part, and highlights the role of O/R Mapping generation. The O/R mapping can be created when generating a PDM from an OOM or generating an OOM from a PDM.

For more information on object mapping, see Object/Relational (O/R) Mapping.

• What Kind of Generation to Use?
  You may face two situations when generating EJB source code:
• Understanding EJB Source and Persistence
  You generate persistence management methods based on the object language.
• Generating EJB Source Code and the Deployment Descriptor
  When generating an EJB, classes and interfaces of the EJB are directly selected. The generation retrieves the classes used by the component, as well as the interfaces associated with the classes.