Chapter 7 Generating JDO Persistent Objects

PowerDesigner

PowerDesigner supports UML object modeling and data modeling. It is useful for developers to use the same tool to define objects, database schema, O/R mapping, and to generate the database schema, Java classes and JDO persistence descriptor with O/R mapping definition.

With PowerDesigner, you can:

• Define objects using UML class diagrams.
• Generate or reverse engineer a database using the Physical Data Model (PDM).
• Generate O/R mapping when generating a PDM from OOM or an OOM from PDM.
• Manually define complex O/R mapping.
• Generate and compile Java code.
• Generate JDO persistence descriptors with O/R mapping definition.
• Customize the O/R mapping generator.
• Generate an Ant build script for compiling and running the JDO enhancer.
• Integrate with JBuilder and Eclipse.

The recommended integration between PowerDesigner and a JDO product is:

1. Define Java classes, database schema and O/R mapping in PowerDesigner.
2. Generate Java classes, database and JDO persistence descriptor with O/R mapping from PowerDesigner.
3. Compile and run the JDO enhancer from PowerDesigner, Ant, JBuilder or Eclipse.

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